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Foxbody Headers, H-Pipe, & Magnaflow Catback Install - HOW TO // BONUS Idle & Rev Sound Clips

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On this episode I instal a full exhaust system in my 1991 Foxbody Mustang 5.0 GT Convertible. Items used are BBK Unequal length headers, off-road H-Pipe, and Magnaflow stainless steel street series catback. In the video I provide tips & tricks to make this exhaust instal go as smooth as possible. I also show you all of the short comings and hurdles I had to overcome during the instal. Many of which surrounded the Magnaflow catback system...
💥If you like this video, you might also enjoy some of my other Foxbody Mustang related Content:
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Опубликовано:

22 авг 2024

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Комментарии : 122

@briandentguy3403 2 года назад

Your not alone man, installing foxbody exhaust perfectly is no joke. They are usually a HUGE pita to install perfectly

@KASLCustoms 2 года назад

Lol yup you got that right!

@dntlss 11 месяцев назад

The funnest part is working on the ground trying to do this, makes it that much more enjoyable, been there done that,lol (many times), i have a 89 and a 91, on my 91 i have had dumps for like 15 years and since installing a new motor a few months ago i decided to do all new exhaust all the way to the back,i got my new H pipe installed but ill be doing the catback here when it cools down a bit,im gonna see if i can get a script for some Xanax before i get started, ha ha ha.

@Christopher26021994 Год назад

I think that this is one of the best possible setups for this car. It sounds amazing and deep. No weird resonances or rasp, should be great for daily driving but when you stomp on the gas it really does its job :D

@KASLCustoms Год назад

Thank you! Yes, I agree 1000% 👍

@beckula7 2 года назад

Great video! Your comments on the Magnaflow catback are spot on. I installed it on a 91 GT about 2 years ago. It sounds lovely, and is gorgeous, kind of a shame it isn't ever seen once installed. I'll add that your fitment issues likely have nothing to do with the aftermarket exhaust components and all with the catback. My 91 has/had and OEM mid pipe and manifolds and I had a ton of trouble installing it. I didn't have a lift so installing it on jack stands was so aggravating I swore off doing anymore exhaust work on the car lol. I had to take it to an exhaust shop to get it aligned properly. I don't regret buying it but I suggest to anyone interested just to have an exhaust shop install it. Especially if you don't have access to a lift and welder.

@KASLCustoms 2 года назад

Yeah it’s crazy hey!? I’ve never heard anyone speak about the issues surrounding fitment with these but since mentioning it to folks now, Ive yet to run into a single person that has had a magnaflow cat back that didn’t run into the same issues 🤷‍♂️

@beckula7 2 года назад

@@KASLCustoms It's one of those things we just try and forget lol. I've had some flowmaster headers and and a bassani mid pipe that i've been putting off installing for about two years due to the frustration with the catback haha. You've got some great content. Keep it coming please.

@KASLCustoms 2 года назад

Lol so true!!! Thank you very much 🙏🙏🙏

@MrLocomechanic 2 года назад

Mac exhaust ftw!

@KASLCustoms 2 года назад

I haven’t seen a MAC kit in years. Any idea what happened to that business?

@joeknowz4898 2 года назад

I started with the headers too..and I was surprised that all the bolts came out with out a problem... The only bolt that was an issue was the dip-stick hanger bolt/nut. I did mine in steeps. Flow Master T-304 stainless steel American Thunder and BBK ceramic shorty header BBK H-pipe. I had Ford racing headed first but the rusted in one season..There was special description for auto and manual transmissions. Mine is an automatic trans..lots of clearance..My tail pipes up over the axel and out the rear bumper were not sealing correctly.. I don't know why but they actually go into the outlet side of the muffler instead of around it. I had to cut 2 inch slots down the sides of each outlet pipe so they could "crush " down around the tail pipe..I also wrapped the down piped from the headers to the H-pipe with DEI heat wrap , I used 3 inch hose clamps to keep them in place.love your garage...

@KASLCustoms 2 года назад

Right on bud thanks for sharing! Also thank you for the kind words 🙏👍

@dm7097 Год назад

I recently did a flowmaster cat back system on my ‘93 LX. I had more of an issue with the passenger side lining up properly. My passenger side muffler actually hangs with a slight side to side lean to get everything to clear. But all is well and sounds/looks amazing. Btw, did mine on the ground. Fun.

@KASLCustoms Год назад

hahahaha! I've put many catbacks in on the ground! I feel you my friend

@willyg6545 7 месяцев назад

Just noticed at 11:13 that your oil dip stick tube isn't seated completely. The reason I noticed that is I had a tough time getting mine in thru my headers as well. Great videos by the way, lots of good info.

@KASLCustoms 7 месяцев назад

Thank you for the note! I will definitely look into to that 👍

@Badmerc1 2 года назад

When the Magnaflows break in they will sound a lot better. I was happy I went with them over flowmaster. Just a higher quality muffler and system.

@KASLCustoms 2 года назад

Right on! Thanks for the tip. I really like them now so I’m sure I’ll love them with a few miles on them 😁

@55naudet 2 года назад

Watching your video brings back memories...maybe a nightmare or two as well! Did my exhaust some 9 years ago and encountered some problems as well, in the end, with patience and perseverance, all things lined up and looked great and sounded even better. I wish I had kept the original system...as my '87 has been in storage pretty much since I did the exhaust all those years ago. I fear i am going to need to find some used catalytic converters in order to pass inspection. Lesson learned...never through anything away!! Great video, keep'em coming!

@KASLCustoms 2 года назад

Thx buddy!!! Yes I agree 👍

@ogsuperflygarage 2 года назад

Great video.... It is amazing how a simple job can become somewhat of nightmare... But a little patience paid off... Sounds GREAT!!

@KASLCustoms 2 года назад

Thx buddy!!! SO true hey 🙌

@shanetobin4943 2 года назад

Great video as always! I'll be tuning in Monday for garage beers and wrenching on the car. Hopefully it's another long one!

@KASLCustoms 2 года назад

Thx buddy! The more beer we have the better the conversation gets 🤣🍻

@PaulDaFox 2 года назад

Great job on the exhaust front to back...really liked the different POV's and sounds really nice!!! Great video brother🤙🏁

@KASLCustoms 2 года назад

Thx buddy!!!

@dennislacy5105 2 года назад

Sounds good! And based on the personality of the car it sounds like it should. That muffler hanger system is weird. Not sure why they felt the need for additional hangers (which look more horizontal than hanging vertically) but maybe it’s because of the added weight of the full stainless steel system they felt the single hanger wasn’t up for it long term. Glad to hear you mention going back and checking the header bolts after some heat cycles. So many people get blown out gaskets shortly after a header install and blame the supplied gaskets but had they checked the bolts a few times over the week following the install they probably would have avoided the failed gaskets. I check 4-5 times and find it takes about that many before you get them all to stay tight. Same goes for those Stage 8 locking header bolts. Leave all those locks off until you do some heat cycles and re-tightens before installing them or you’ll be taking them off (pain in the ass) to tighten.

@KASLCustoms 2 года назад

Thx buddy! I couldn’t agree more!! Good info, Thanks for sharing and thanks for reaching out 🙏👊

@peteartussee1202 2 года назад

Sounds great man. Very good job. Keep up the good work

@KASLCustoms 2 года назад

Thank you very much!!! I’m not sure that the video does it justice. I find if you watch the video on a proper stereo with a sub etc it give you more of a “real world” effect. All that said - thanks for reaching out 🙏

@juanortiz5126 2 года назад

Sounds great! Keep posting brother..really enjoying your vids 👌

@KASLCustoms 2 года назад

Awesome thanks buddy! Will do

@stephenroberts7816 2 года назад

Oh man have I been there. I use to swap my cats in and out to get an inspection sticker and every time it pissed me off. Sounds great!

@KASLCustoms 2 года назад

Hahahahaha I bet it was! This isn’t a job I’d like to do once per year 😆

@gregfindlay2347 2 года назад

Excellent video. Looks like doing this at home a lift would be needed or my local muffler shop. Nice to hear the comparisons with other products and the challenges of installing the system. Sounds Great!

@KASLCustoms 2 года назад

Thanks sir!!! Lol - having the lift this go around was definitely nice. I’ve done a lot of them just on jack stands so this was a nice treat 😉. I am going to do a video shortly of the full blown stock exhaust sound clip vs, the full header back aftermarket magnaflow catback system so folks can have a nice reference piece when going down this road. Exhaust is such a tough decision because you really don’t know how your car is going to sound until you put in all the work/$$$…

@gregfindlay2347 2 года назад

@@KASLCustoms Exhaust is definitely a hard choice when it comes to making the car personalized. I have a 1989 coupe that I would like to give it a more muscular tone. Not too loud but just letting you know it’s alive. My dilemma is that my 5.0 LX coupe only has 27.000 km and has collector plates. Apparently stainless steel exhaust is ok to install 😉. I hate to start modifying this unit and then it ends up lowering its value. But that being said it still has no grrrrrr factor when going down the road. Thanks for all your time and efforts on your clips. Looking forward to the comparison of the exhaust systems and how much they differ. Cheers!

@KASLCustoms 2 года назад

@@gregfindlay2347 Wow that is a super young car - good for you! I felt the same with this car: as cool as it is to say it has the stock exhaust, it just isn't the same driving experience with out some "noise." This is why I removed the exhaust like I did and stored it away for down the road. 👍

@SCOTIAN_ 2 года назад

I did Mac shortys into a Mac Pro chamber and flowmaaters 44 . Deep sound.

@KASLCustoms 2 года назад

Nice! 💪

@SCOTIAN_ 2 года назад

@@KASLCustoms just joined the channel and was getting caught up ! Your car is super clean . I have a 03 cobra out here in SK, left the fox home when I moved west and now can’t get to back from my dad 😂

@KASLCustoms 2 года назад

Thx buddy!!! Hahahaha - the old boy is a fox lover too. That’s awesome 💪😂🍻

@war.admiral.3639 2 года назад

Great as always brother

@KASLCustoms 2 года назад

Thx so much buddy!!!

@blackgtfoxovert6104 2 года назад

Sounds great but like my super 44s! Thanks for the content

@KASLCustoms 2 года назад

Thx buddy. I’ve got 44’s on my coupe and really like them too. The way I see it, the 44’s are for leaving the car show or a cruise with the boys, the magnaflows are for a date night with your gal 💃😉

@hotrodgeorge2352 2 года назад

Nice job bro sounds good 👌🏻

@KASLCustoms 2 года назад

Thanks buddy! I really like the sound of this kit! Exactly the sound a mild vert cruiser needs 👍

@NewEdgeDesigns 2 года назад

Great work, it’s always something when your doing a whole exhaust system, but that came out relatively nice considering the H pipe…

@KASLCustoms 2 года назад

Lol no doubt! Thx buddy 👊

@stickfigure4u1 2 года назад

Another great vid brutha 👊🏼, fox sounds amazing!!

@KASLCustoms 2 года назад

Thx so much buddy!!!

@joepiazza3037 2 года назад

Sounds good! Great video thank you 👊

@KASLCustoms 2 года назад

Thx buddy!!! 🙏👊

@89G 2 года назад

Nice! I just put up a fight with mine too. I just put Holley's Flow Monsters on my 88, and used the existing 2.5" mandrel tails. It just has to be "good enough" because there is not perfection with the way they were bent.

@KASLCustoms 2 года назад

Thx bud! Yes so true! I did have a big pry bar on mine a few times 😉

@oscarvillarreal8951 2 года назад

Wouldn't the dip stick heat up or something touching the header?

@KASLCustoms 2 года назад

It’s is the way it was mounted from the factory 👍

@clevelandfox1081 2 года назад

One of the reasons to get rid of those stock coffee can high amp drawin turd ass starters. Go to the 92/93 high torque mini starters. Much better clearance and more efficient. Beautiful car!

@KASLCustoms 2 года назад

Very true. Thank you!

@TheInfamousProject 2 года назад

It's a convertible so it must be twisted which is why it's causing you all the problems! LOL. That muffler being cocked out like that would drive my OCD Symmetry nuts. That bracket with the hanger needs to be tweaked or maybe re-done. By chance did you try the factory hanger to see how it lined up? I am genuinely curious if maybe the way you had to get the H-Pipe on if you moved things 1/16 of an inch off up front it would translate to 1/2" by the time you got to the back? I'm sure you'll get it sorted and I feel your pains. Imagine now you had an LX or Cobra bumper and you needed to make sure that the tips were 100% symmetrical LOL. Sounds great regardless! Go Verts!

@KASLCustoms 2 года назад

Thx buddy! I’ll tell the story on our next BS/🍻 session and give you some insight 😉👊

@blueknights7576 2 года назад

Great video as always brother!! She sounds real healthy and sounds like Karen would approve this choice…lol. Definitely will have to catch up on these podcasts!!

@KASLCustoms 2 года назад

Thx pal!!! My neighbor sold their house so I will have to warm up the new neighbor with the Vert before I introduce the coupe 😉🤣👊

@five_point_whoa6983 2 года назад

The 91 convertible I just picked up has Shorty headers on it with the stock catalytic converter’s and magna flow mufflers. I’m not digging the sound, thinking of going with the flow masters super 44s with the dumps.

@KASLCustoms 2 года назад

Nice!

@Izzy_Nator 2 года назад

Great video !

@KASLCustoms 2 года назад

Thank you so much 🙏🙏🙏

@tonyoliver2334 2 года назад

Nice job man! I just bought a used bbk o/r hpipe and already have shorties and magnaflows. Hoping the offroad h really wakes it up lol. I was sorta bummed when I installed the headers and mufflers on the stock h. Didn't really sound any different :/

@KASLCustoms 2 года назад

Thank you! Right on. Yes, the O/R H will make a huge difference 👍

@DP-bc3xl 2 года назад

Sounds good! maybe cut /shorten fab the rear hanger bracket to bring the rubber isolator off the frame...Cant wait to see it "lit up" on the wall..DP

@KASLCustoms 2 года назад

Thx buddy!!! Yeah it’s a very odd system. One in which you wouldn’t think would need as much modification 🤷‍♂️

@Mattys91gt 2 года назад

I'm having trouble getting the flow tubes to turn the right direction not sure what way to turn them

@KASLCustoms 2 года назад

It really doesn’t matter which way they are turned, as long as they have road and body clearance 👍

@juanm.ramirez7878 5 месяцев назад

Pardon my cuestion but..I want bti know if there's a gasket or donut between d header flange and exhaust...tnx

@philolen481 2 года назад

Great Vid -- the exhaust sounds very healthy -- mascot very cool a girl playing hockey in Canada what are the odds LOLOL

@KASLCustoms 2 года назад

Thx buddy!!! Hahahaha Damn right!

@Dee2000 2 года назад

Very nice, thanks for sharing

@KASLCustoms 2 года назад

You bet! Thx for reaching out my friend!

@guillermoocho359 2 года назад

What size tires do you have? I want the 3" Flowmaster exhaust but I also have 10.5 wheels with 275/40 17s. I'm wondering if the 3" will clear.

@KASLCustoms 2 года назад

I also have 275/40/17s on a 10" wide wheel. 👍

@Labdad53 2 года назад

Just found your channel. Awesome content. Changing my 1990 GT convertible’s exhaust. Wondering if I need o2 sensors or not? Going with off road h pipe and flowmaster American Thunder. If not how do I delete them?

@KASLCustoms 2 года назад

Thanks very much! Yes you will still need them. Your car/computer won’t be happy with you if you don’t put them back in 👍

@Labdad53 2 года назад

@@KASLCustoms Thank you!

@peterbellizzi6989 11 месяцев назад

My 86 GT fox was stolen 20yrs ago and never found. I was hoping someone out there that donates fox could help me.

@miked8027 2 года назад

Love the vids . I’m a new subscriber. Where did you get the blank center caps for the pony’s?

@KASLCustoms 2 года назад

Thanks a lot my friend!!! I purchased these wheels/tires second hand and they came with them. I believe that these caps are the ones they came with from new. Ive tried stock caps with the red/white/blue horse and I actually prefer the smooth ones 👍

@miked8027 2 года назад

Ok. I have a set of 17” from LMR with the factory style center caps but i think i prefer the smooth look. Thanks for getting back to me. You and TIP are my two favorite Canadian fox guys haha.

@KASLCustoms 2 года назад

Me too! Thanks buddy I really appreciate that!!

@stumpdiggity Год назад

What off road h-pipe did you install and where did you get it from?

@KASLCustoms Год назад

I’m not sure the make…? I purchased it second hand

@stumpdiggity Год назад

@@KASLCustoms Any drone with your setup? I’m going the same route on my stock 93.

@KASLCustoms Год назад

Sort of but not really. If 10 is drone and 1 is none, I’d give it a 2.5 👍

@stumpdiggity Год назад

@@KASLCustoms awesome. Thank you for your reply!!

@KASLCustoms Год назад

Anytime!

@mister_12.01 2 года назад

Do you believe the stock muffler hanger would secure the muffler instead of the Magnaflow double hanger? I'm curious if the stock hanger would be to short. It seems as if the double hanger piece is what creates the pain, and I'm currently dealing with the same pain as you trying to install mine. I'll be using the tips and securing the tailpipes at the back. For me the hanger on the tailpipe directly after the muffler seems overkill since mine will be secured at the tip. I can understand the need for the double hanger near the muffler on the GT since the tips are not secured/supported near the back. I'm curious if I should keep the oem muffler hanger would work or be too short based on your experience with the install. Great video BTW!

@KASLCustoms 2 года назад

Hey bud! Thx for reaching out. In my experience, the one side (muffler side) of the magnaflow hanger is in the exact same spot as the stock location so I can’t see any issue with using the stock hanger instead. Also, I did use the tailpipe hanger and the rear of the car when I installed my GT style dump tips

@mister_12.01 2 года назад

@@KASLCustoms Thank you! Looking forward to what comes next with your project

@KASLCustoms 2 года назад

You’re so welcome! Thanks very much 🙏👍

@ericridout61 2 года назад

It is a lil tamer than the flow master. My PYPES sound similar

@KASLCustoms 2 года назад

Yup I totally agree 👍

@JJ-Fox 2 года назад

What color is that combo? Going to look at a 90 wild strawberry gt two tone titanium tomorrow . Wish me luck !

@KASLCustoms 2 года назад

Good luck my friend. That’s the exact same color combo as this one 👍

@JJ-Fox 2 года назад

@@KASLCustoms that’s what I thought. Beautiful

@KASLCustoms 2 года назад

Tha k you! Good luck today 🙏🤞

@JJ-Fox 2 года назад

@@KASLCustoms I got it ! As my first car my budget wasn’t too big. But I ended up getting it for a good deal as it is a little rough here and there but good in todays crazy market for them. But as my father owns a couple foxes I’m sure it will be a fun father son project. I look forward to binge watching your videos to learn even more about them. 👍

@KASLCustoms 2 года назад

Congrats buddy 🎉🎉🎉 Welcome to the 🦊 family! So glad the next generation are keeping these cars alive! Good luck with it and please keep us posted with the progress 👊

@kpkp2655 2 года назад

Question, For a GT, any performance difference between a downturn or a straight through pipe aka LX? My buddy has a GT but he wants to have a straight through exhaust through the rear bumper becuz gainz! . I told him not to, because it looks better and way clean and will warp/damage the bumper cover and no gainz, but, he is completely resisting to my idea of keeping it turn down exhaust pipe. I will cry (not really) if I see holes cut out in the rear bumper cover. Also any point of honing/smoothing out the stock headers? I also see the T/A getting worked on..Nice!

@KASLCustoms 2 года назад

Hey buddy. As for “gains,” there would literally be zero from changing the tips. There was a fella that mentioned he worked over/hogged out his stock headers and estimated that he opened them up by about 30-40%. For the price you pay for new headers vs. The time you would put into opening up the stock ones, I would say you’d be further ahead buying new... 🤷‍♂️ Hope that helps!

@kpkp2655 2 года назад

@@KASLCustoms Thanks!

@KASLCustoms 2 года назад

Anytime 👍