Driving The GT4 With The New Soul Performance Over Axle Pipe 

I don’t think straight pipes refers to there being no curves. I’ve always considered it to mean no cats/resonators/mufflers.

Shoutout to Porsche for still offering manual transmissions. Autos sure is faster, but nothing beats that manual shifts and feelings. Plus it just completes the interior looks.

OPF stands for Ottopartikelfilter. It is basically a filter out of an highly porous ceramic component, which will stop a big part of the carbon output to flow out of the exhaust.

Matt: “Anyone who complains about the gears being too long is an idiot.” Also Matt: “Gee, it’s hard to get to redline with these gears. Top of third is like 100”. It’s a shame that the gears are as long as they are. In theory, they allow you to drive long stretches with very little shifting. And the powerband is significantly wide to not have to shift often. But with an engine that sweet, you just WANT to wring it out, and with the gearing as is, you can only do that twice, three times on the highway. It’s a shame. Definitely doesn’t ruin the car, but a shame nonetheless. Was the biggest frustration with my 991.1 C2S. That was even worse with the 7 speed manual. You could cruise the highway in 5th. Car sounds good, but I agree, a little more amplitude would be welcome. Also, with the heel / toe, I’m size 13 and have duck feet. My “heel-toe” is more like “left forefoot brake, roll ankle right, right forefoot stab gas. I installed the Rennline adjustable throttle pedal which has a bunch of adjustment and it really, really helped. I found the pedal extension on top was too much as I would hit the gas while braking, but the extension on the bottom and the top pad out slightly worked great.

Wow that sounds insane! Such a different sound to the GT3. Sounds like a good compromise right now between comfort and sporty sound too.

“Stop using your baby feet; grow some man feet and heel-toe like a real man!” That’s my made-up Matt-ism for the day lol

Looking forward to the GT3RS comparison video. The GT4 is the perfect size. 991 and now the 992 are just getting way too big.

Matt the OPF on EU 718 GT4's are activated, they have sensors and are monitored. The OPF in US are not, no sensors.

Try capristo one of these days on your cars, I've never heard anything quite as good, having been around a lot of porsche gt4s, Cayman etc.. capristo makes the most musical, non drone, perfect loudness especially on the valved versions. Glad you didn't go with total crap like fabspeed, soul is fine you'll likely be happy with it glad to see you doing the exhaust again it's so needed.

So glad you went with the manual, and sounds great.

Once you've had your fun with the 718, sell it, buy a 981, install a deman 4.5L conversion, short ratio gearbox, lightened flywheel, dundon intake runners, headers and exhaust, tune. Document it on RU-vid. Happy days!

Great video Matt! Love the discussion regarding where you started and where you are now with the mods. Keep up the great work!

I can't stop watching your content. Good stuff sir.

Sharkworks short gearing set is a must for this car.

Awesome sound Matt!

I need this car in my life

Thanks for sharing the car and your experience with us.

Sounds great. Straight pipe means, no flow obstruction from headers back. My ZL1 has a muffler with valves but headers and no cats. It’s not straight pipped.

Sounds like a Work of Art!! Enjoy that Machine.. Love the Color

This makes it sound like Matt has a lisp. Love it

Sound is definitely always on now, with good feedback. Is that because the valves are open now, or the exhaust, I wonder.

Can you tweak the mic gain at all? I can't really make out what you're saying inside the car because of the exhaust noise.

hey matt! so, particulate matter refers to a mix of solid and liquid particles that may be suspended in the air or exhaust gases, and what people say is that it may be one of the main causes of pollution and intensification of the greenhouse efect. particulate filters have been very common in diesel engines for a while, and they started using it in the gasoline direct injection engines due to the new european emission standards. so basically, they're a filter that remains closer to the engine, thus hotter, and this heat combined with some substances of the OPF are responsible to reduce hydrocarbons molecules, nitrous oxides (NOx) and carbon monoxide that are produced during the fuel combustion into small amounts of carbon dioxide, nitrogen and water.

The master at work! Thank you for making another great video. -Mike

wow ! what an amazing beautiful machine. and his new sound is captivating ... wonderful Porsche

I'll be looking forward for the comparison between the two Porsches as I'm sure it's going to be a very interesting chat!

I got the exact same setup in my 718 GT4, lovin it

Well damn... This video just cost me $1800. Need that sound on my GT4 now!

Great to see you actually driving the car.

The amount of content has been awesome! Love it and keep it coming!!!!

Sounds amazing !!!!!!!

I had a Formula Ford driving course 25yrs ago where they made you drive in and out of the pits and on the front stretch going up and then down the gears around and around many times. Find a big parking lot or deserted road you can repeat 1-2-3-4, 4-3-2-1 with heel-toe over and over. It doesn't have to be extreme rpms. Then call us in the morning like a doctor and report back......

That uplift at 6:48, sounds soo good.

Maybe it was my home speakers, but with the valves open all the time, it came off as a little boomy when you were just cruising. That would annoy me to no end on the highway or freeway when cruising.

That is a heck of a sweet car man! My one day car is a Porsche 911 Turbo S

Look into the company VAREX they make super quality valved exhaust and you'd be able to open and close your valves via a remote. Did it to my car and love it.

Sounds like an air cooled porsche

Porsche says the cans are (obviously) in there but the stuff between the screens you can see when you look inside is not. You’d have to weigh them or cut them open to see what’s true.

Much as I enjoy these vids, now and then 4:36 there's a simmering anger that I actually find quite unnerving.

Heel - Toe is definitely a cool tool to know how to do. I find it harder to do on the street when there is no urgency. Maybe that's an issue for you too. On the track with huge braking and deceleration happening you just rock thru the motions and Walla, it happens just like the OE program. Practice without the engine running for foot position and coordination, then on the street without the braking component to see how much throttle to apply. Then put it together on the street slowly and then somewhere you can decel fast to try a track simulation. Let us know. It takes practice.....

Yeah buddy!!! Sounds insanely good!!!

My face would hurt from smiling so much if i ever get to drive a Porsche with a manual trans!

Looks like you had more fun in the civic 😆

Am getting the feeling that you will just keep the gt3rs just to know that u have it , i sense that this is going to be ur # one going forward...

hubcentric spacers are the answer

“...the GT3 is the GT3...” 👍😎!

Sounds great !!! I have my heart set on a GT3 or if I can be more patient a GT3 RS.

I'd want the valve switch in case the Rozzers pull you over with a dB meter in hand. Maybe not in FL, but happens in CA.

I guess the exhaust modification is making it more difficult to hear what you’re saying 😉. Is it me, or at lower RPMs does it sound like an ‘80s 911 Turbo 🤔?

Why do I enjoy watching a guy driving and talking?

Do you get backfire sounds when downshifting like on a 911 in sport mode?

How much louder is it on the outside?

“Just straight pipe it bro”

A power washer that comes with a 1/4 inch hose is replaced with a 3/8 hose will pressure and water flow change and by how much

i like your long form real life videos... is this your favorite do you like it more than gt3? thinking about it hard

Matt you think about Numeric short shifter & cables yet? I did mine

Matt do you think you would fit a GT3 RS bonnet to the GT4. Nice subtle lines on the bonnet and a bonus that it's Carbon fibre so quite a bit lighter than the stock bonnet.

Have you ever thought of getting car scales to measure corner weights, suspension set up, etc..?

good info but kinda Doug demuro-like… 2 seconds at 80% throttle then “oh man.. it definitely feels quick” lol.

Nice

Straight piping is an aggressive form of deep throat oral sex. This is when a girl lays on her back on a bed (or some other object) and tilts her head back over the edge so her throat is no longer at an angle....Matt you agree with this definition? ;)

Looking Good Big Fella waist is trimming up!!!

straight pipe has nothing to do with the direction of the pipe

Only car I could heel toe was the skip barber formula car. Those pedals are spaced close.

I belive the active OPF is a version of the core you are seeing in yours but the matrix is further coated and the pores are a bit smaller. So its unacceptable with the valves connected, eh? Thats what John at SOUL said too..makes sense based on the valve logic. Why even run a muffler then? But a valve controller will be a decent option

Matt, how do you get your blend mount to be so stable? I know you mentioned one of yours jiggled or bounced. The one in my 981 Cayman S jiggles like crazy...

My feet are just too big for any heel toe, rev match would be great.

Any thoughts about a dsc sport control install. Seems you had good things to say about that before?

Going to do the DSC suspension controller thingamahjig on this one too?

Matt - I couldn't heel-toe until I drove on a track and was forced to do it under hard braking. Found it impossible on the street with light city braking to manage throttle blips. Much more intuitive when driving harder believe it or not.

Matt, will installing the OAP cause CEL?

GT4 or a base 911?

Adding just this pipe does not disable the stock exhaust switch….

@4:40 the level of triggered I get when someone calls my honda a v4 engine

Please keep the M3!

"The stupid Go-Pro Mic didn't work again" > any idea for a solution yet? It's not great like this.

Check out Archie Hamilton racing. His friend has a straight pipe setup through JCR and it’s the best sound I’ve heard for a GT4. It’s amazing! You have a great sounding car as well, but go check it out. No disrespect, love your Porsche content. ✌️

Gt4 over gt3rs any day. 👍

Actually first 🤙

Audio is JUNK. You should take this video down. Very watchable. With the sound off. Call me Surprised.

Stock 981 GT4 sounds better

drone

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