supercup

Post ups what power package options you have "actually" added, what you have gotten in terms of gains in HP and TQ, what you like and don't like about what you have done. It would be nice to have 1 thread that reflects what people have actually done and how happy they are.

To date I have only done Cargraphic sport headers - they represent an outstanding balance for street or track use and sound fantastic. They help smooth out the dip in acceleration in the mid range and sound absolutely fantastic at full song! Not sure they add much power, but what they do add is well worth the price of admission.

I am looking to add 82mm throttle body and tune and interested in who has done what and how it has worked and if you have had CEL issues or not. I have read most threads since the board went up and done lots of searches on the topic. But now I am looking for real world feedback from the end users, not the very capable professionals who create and sell the packages.

Thanks in advance for your experiences.

kahane18

I added the IPD and the throttle body along with the BMC filters, no tune yet, stock exhaust.
CEL showed up twice and went away on its own, I've done some research, and most say that the CPU needs to adapt to the higher air flow which it looks like its doing so far.
The car definitely feels better in the mid to high RPM, the intake sounds like a turbo under acceleration with a high pitched whistle which you can hear with the windows open.
Overall, a worthwhile upgrade for the money as the car feels more responsive and powerful(seat of the pants not dyno).
Planning to add headers and a tune over the winter keeping the stock exhaust.

Best

Peter_GT4

Cargraphic sport headers, IPD and throttle body, BMC Filters, customized tune by Ehresmann Automotive.

Zero issues so far (2500km), no CEL ever seen.

Runs actually cleaner, power output is more linear with dips filled.
Healthy gains, especially in the midrange, freer reving to the top,
more and true "GT" feeling overall.

Sound is more than fantastic. Not a bit louder in cruising mode, very nice at medium throttle
and absolutely insane wide open.

Feels faster and it is: Acceleration from 100 to 200km/h is now 9.1s, stock between 10 and 10.5s.
Not dyno´d yet, but the claimed 420 PS and 450Nm seems realistic to me.

Fuel consumption actually dropped about 1.5 to 2 liters per 100km.

All in all, I am more than happy with the power package.

Was more than worried about spoiling the whole car or running in
numerous issues when I started installing the package. Wasn´t necessary.

Just allow the CPU some adaption time, it felt right from the start and even better
after 200km.

Hope this helps - would do it again anytime.

Peter

Spyerx

Typical N/A pricing (high) to add little power. i want to say: headers, tune, TB, plenum about 25HP on 91 oct. more on 100oct.

d00d

Installed IPD plenum and 82mm TB, CEL went away after a few starts.
Dundon headers are being built.
I didn't install an aftermarket filter because the increased engine wear isn't worth the few horse powers.

Alan C.

I believe there will be 2500 or less GT4s coming into the US. Maybe 300 - 500 will do any power mods. If there are 3 or 4 manufactures in the market they don't have a lot of units to absorb the R&D costs. Look at the size of the recent group buys for headers. You can't buy tubing direct from manufacturers in those volumes. You have to use a service center. You need custom bends. Go to a specialty shop or purchase a CNC bender. And that just takes care of the tubing side of the build. Plenums and throttle bodies maybe a bit easier.

Tunes with hardware a bit of a hybrid. The hardware could be spread over more units but the tune would be model specific if done right.

supercup

Seems across the board claims for Tune, headers (w/cats), Filters & TB are 20 - 30 h.p. and 20-30 ft.lb. of TQ - Not great, but every little bit helps!

Cost versus value is always a tough equation on a NA cars. Goal is to maximize the platform without spending GT3 money!

Jimmy-D

I started with FVD LT Sport Headers and the Valveless exhaust. Car sounds awesome( do not know if it is the combination of both because they went on at the same time). Noticeable power gains low and midrange and dips ironed out.

Then added Plenum/TB with a tune 2 weeks ago. No CEL what so ever but the Master Mechanic had car all hooked up and said he was able to successfully do the adaptation although the Tune has the adaptation built in. I have not noticed much of a difference but the car does pull from 6000 up to redline like a freight train and seems to really breathe better up there. So my take is the headers helped in the midrange and tune w/ TB/Plenum really helpedthe upper rev range. I do not hear any whistle or any change in sound with the Upgraded TB/Plenum- which is probably good but it is possible that since my exhaust is pretty loud above 5000 rpm that any whistle is masked.

I will Dyno car in a coupe week but the car used to be quick and now with all these Mods I would say it is fast now. No need to be faster unless you are a drag racer.

Alan C.

I'm hoping to get my Dundon headers in the next 10 days. They look to have a well made quality product using T321SS tubing. The GT4 headers are a lot cheaper than the GT3. We don't need valves.

usctrojanGT3

My CG headers sound magical when I'm WOT and when I shift it sounds like sex.

morjo02

Please post a video

Peter_GT4

Yes, like sex, dirty version .

When talking about cost versus value, I think it is quite nice
to gain maybe 30 HP or even 40 HP at some points.

But what makes the package really worthy is the overall feel.
The engine no longer lacks in comparison to the chassis,
it is indeed a different animal and a true GT in every aspect.

That´s well worth every buck, if not priceless to me.

Peter

usctrojanGT3

Spyerx should have video of me as he was behind me at Thunderhill. I'll see if I can get some videos next weekend.

mooty

john, when u find it, lmk


martins sex video?
lmk when and I shall refrain from
logging in that day

Spyerx

Huh? Sex video, behind??? WTF is this?

EXACTLY