I Installed the Most Affordable Exhaust on My Lexus ISF and It's WAY Better Than I Expected - XForce 

I fitted an X Force to my 2008 isf. Dyno ran before and after. Standard front manifolds and picked up 16hp through the mid range and also an associated torque rise. The second run was a very hot day so 20 hp increase would be accurate. Rolling road dyno. Sound is good balance not to loud in the car. Highly recommend.

Great content, love your channel. I was slightly dismayed that you have perpetuated the myth that the factory exhaust tips are "fake". This is a very common mistake but these tips are actually specifically designed to collect air and mix with the exhaust gas. The tips are aligned with the output ports of the muffler and mounted in a heat dissipating frame. The back side is contoured for collecting air and mixing with the exhaust for cooling to avoid melting the bumper under extended high rpm driving. Keep the great content coming, you're a natural at this. I've subscribed.

Have the same exhaust. Great sounding almost joez like. The price was a plus!

Wow, the exhaust note is not overbearing or drony, It actually amplifies the way the stock exhaust sound. Great job man, tasteful mods

Bought my ISF earlier this year and it came with an exhaust. Too loud and drones on the highway. Went back to stock and its loud enough for me.

I have the x force exhaust in my 2011 is350 and it sounds so awesome. I think it feels noticeably faster with it probably because the stock exhaust system has 3 mufflers on it which might be holding back some of the horsepower and sounds from the amazing engine in it

I mean a whole cat back exhaust for $1000 on a v8 doesn't sound to expensive

Isf.👍 is great family hawler you can track on weekends smiles for thousands of miles some people think there just an is

You're driving my dreamcar! Great video. Let me know if you ever decide to sell it at an affordable price 👍

One of my dream cars keep up the ISF content

Highly recommend you get a new belt + tensioner. I hear the infamous squeak at high RPM, WOT shifting ;)

Got my Joe Z put on a couple months ago, I think the 8 speed trans helps a lot with drone as I really don't have much at all on the highway and I'm loving it. O2 sensors seem to be a consistent pain in the ass on our cars

Sounds great!

Just FYI you can rent an O2 sensor kit like this from most parts stores (Advance, AutoZone, Orielley) for free (as long as you return it).

NICE CHOICE 👌

Small difference from stock, in sound.

Definitely headers next...it'll be your biggest power bump

I get to out this in tomorrow morning in my house. I can't wait

A lot of ISFs are changing hands on market within past few months. I recently acquired a USB 11' with xforce already on it few weeks ago. Drone is mild and tolerable. One thing that'll certainly reduce drone is having sound completely exit out the back via fully piping the rest of the exhaust to the faux tips so that the exhaust/sound fully exits where the tips are few mm past the bumper. This was tested first hand on my s2000 where the single exit was slightly behind the bumper and I had it pushed out a few inches that resulted in a noticeable drone reduction. Most ISF exhaust is ending right behind the bumper which will have sound waves travel back through the car. Not saying you mind the drone but for anyone interested in reading this maybe would help. Helmholtz and quarterwave cans are different thing for another day. Another thing I wanted to do was delete the muffler on one side and hear what that sounds like. Half as loud as double muffler delete of course maybe less overbearing. If you somehow decide to do this let me hear it haha. Deleting the muffler and having a delete that pipes the same distance/out the back will be much different. Team Xforce is literally going to be a ton of ISFs lol...

Do you still have this car dude?

Eventhough both the isf and mustang gt has a 5.0 v8 engine, it always sounds too muffled on video and nowhere near as good as a mustang GT or most american V8? Is it just that on video or it's like that too in-person?

My one thing of advice would be to remove the o2 sensors FIRST and not have half the front end mid pipe "hanging" from the o2 sensor wires.... I cringed when I saw that. Plus it's way easier to apply force when the mid pipe is still attached and not having to worry about the pipe moving like it was in your video when you were applying force to the o2 sensors... I just did an exhaust on my RCF and also a buddies RCF over the weekend.

Hey bro, I have v8 Lexus 600hl, just checking if you have any idea about catalytic converters? On One of the bank my catalytic converter is burgered and throwing engine check light on dash. Is it ok to drive car like that? Or what shall I do? I am in a country where cat is super expensive and I don’t wish to instal new one. Shall I delete the cats? Will car engine have no issues? Can I drive it like that?

The whimsical decimal delightfully turn because mimosa presumably shave till a hideous high dogsled. zonked, piquant report

How much did the exhaust actually cost

Is there any affect on the low torque?

that rear muffler bracket is janky AF

Do you know if this and all the other mods like the taillights, and the spoiler work well for the 2010 IS 250?

Just installed mine, sounds way better than stock . Videos are never going to do any exhaust justice! I’m gonna muffler delete with true quad tips . Should sound beefier. I’ll post on my channel soon .

Very livable! I like it

The new lexus IS 350 F sport is out this month .

Did you guys just take the rear catalytics out?

God I hate fake exhaust terminals 😕

It’s easier to remove o2 sensors after driving it

Sounds great for real, just purchased a IS300 F2 sport and can't wait to do some stuff in the summer time.

Remove the dual silencers and it should sound a lot more throaty.

Are you going to do any videos on that Fiat Spider? I had one as my first car and I have a soft spot for them.

Delete the mufflers, trust me. 90% LC 500 sound. I didn’t like the sound with mufflers on, it almost sounds stock.

How does it compare to the Evo 9? I know it is apples to oranges but i am trying to decide between an Evo 9, ISF and 05 STI for a fun weekend car.

If the exhaust is touching the cross bar this means your engine mount is gone. Get it replaced. I had this same problem. I changed my mounts when I installed the PPE headers

Could the make an exhaust for the lexus as the LFA

Do you have any fitment issue? I have to cut half inch of the tip since its hitting on the stock exhaust tips and now i heard some metal grinding sound when i hit potholes and i found out that its still hitting on the stock exhaust tips again. Did u tighten those exhaust hangers to the muffler before u install?

How was this exhaust compared to the muffler delete? Feel any different between the 2 setups?

do you know if that cat exhaust would fit an 06 IS350?

How much was it

I have the same exhaust love it but with headers its gonna sound dope

Dies putting on a duff exhaust cause Havoc with your car's computer? Are you getting any check engine lights?

Sounds nice! it´s a tad louder than the bolra i had

Great improvement! How are you enjoying the car on a daily basis compared to the M3?

Looks and sounds pretty sweet too me 👍

I like it ,it sounds very good

Fiat 124

what’s insurance like on these cars, anyone from southern california knows how much for insurance costs on the isF?

What's the squeal in between shifts mine has the same thing 🙄

Fits 06 is350?

I have a 2015 RCF. Got an RR racing exhaust. Those o2 sensors were insane. It was an hour or more process once I got the socket and figuring out how not to break them. Also I did this all on jack stands and ramps while laying on my back. I do not advise that haha

Any recommendations for a gs460?

Sounds the same not even worth the money. Go big or go home. Anyone who thinks this sounds good hasn’t heard a fully straight piped ISF

Illegal to mod ur muffler in cali 1000$ ticket

May i have your old exhaust for mine?

Lucky I have the same silver o2 sensor. Worked for me first go. Lol. My chassis brace also fouled on the exhaust. I ended up heating the bar and bending it a bit down for some clearance. I heard it might be due to engine mounts sagging, so maybe something to look at. I haven't bothered as yet. RR Racing also do upgraded engine mounts... Maybe an upcoming video? Hahaha

Do a front bumper conversion!

Dude, that things sounds fruity :D

I never liked the looks of these stacked, offset, exhaust tips

Do muffler deletes ull like 👍 it more and will sound more beast

Come on man. You're making the ISF crowd look bad. A true car guy mods a car because it looks, sounds, performs better. Not because it is the cheapest (first your aero and now the exhaust). Do some research like true car guys. Talk to other owners, see or hear their setups and then make a decision to your taste.