I'm on the verge of purchasing a Europipe exhaust for my recently acquired 2012 997 Turbo S. I was hoping that Europuipe users could answer a couple of questions before I pull the trigger. Here goes:

1) How much louder (vs stock) is the Europipe 997.2 Turbo exhaust at a cold start (i.e. +20%, +30%, etc.)? Considering that this is my daily driver, I'm trying to avoid upsetting people when I start the car at my underground work garage.

2) For the moment, I do not want to do a flash because of warranty concerns. On that basis, is there a measurable (butt or dyno) pick up in performance (horsepower or torque) with the Europipe only? Because of the assumed reduced back pressure, are there any performance compromises with the Europipe (i.e. in certain rpm ranges, etc.)?

Thanks in advance for everyone's help!

Tim

 

Be careful on a 2012 s, the Siemens ecu can detect changes in backpressure and adjust timing accordingly to protect the engine.
So other than extra noise, just an exhaust may not perform better than stock.
The EP is a quality piece, about 30%+ louder than stock, ESP on cold am starts.
Others will chime I'm sure, but this is what I was told at the Porsche driving school 2 yrs ago.

 

Tim,

The Europipe is an outstanding compliment to the TTS and I have never heard anything but praises on it. Yes it is a little louder than stock but definitely not obnoxious. I would guess it is around 20% greater than stock on start up. Maybe even a little bit less.
I would not worry about bothering your underground garage folks. I suspect they would be turning their heads and saying, Damn, that sounds awesome!

Now on to the flash. Yes it make a big difference. Probably somewhere in the 80HP range. Noticeable? No question. As for the warranty concerns, I'm not sure that is a valid concern. At least with a reputable tuner.
I certainly have not heard of anyone that has had issues with warranty's that had tunes. Both local dealers here sell tunes and they have told me they have never seen a problem caused by a tune.
My suggestion would be to get the Europipe and a good tune.

Walt

 

Hi Tim,

I've EP on my TTS, I'd say it's about 20-30% louder than stock at start up, however, under WOT, it wakes up the beast and transforms it to another level of beautiful EP symphony sounds!!!

Im on the fence with a tune as well simply because I dont want to mess with the warranty. EP wont add HP to your car but it will compliment the TTS in the sound department. (I feel that it increases throttle response a little bit though). You wont regret your decision.

 

First, I appreciate the feedback from those who responded. An approximate 20-30% exhaust volume increase at cold start seems to be the consensus...I can live with that. TT Surgeon's comment relative to the 2012 Turbo S's ecu have me a little concerned. Is this a problem that anyone else is aware of? Most important, does this issue only prevent enhanced (beyond stock) performance, or does it somehow compromise stock performance? Again, thanks for everyone's input!

Tim

 

>>>Be careful on a 2012 s, the Siemens ecu can detect changes in backpressure and adjust timing accordingly to protect the engine.>>>

TT Surgeon, please expound on this statement. I'm sure the ECU makes all kinds of adjustments as expected it should, however what exactly is the reason for the caution?

Walt

 

Tim

You will really enjoy this exhaust on the car. It's addictive, & I keep the car in sport mode a lot for the higher rpm's. it's what a sports car should sound like. It will only be an issue with your neighbors should you be heavy on the throttle going out of the area. Then it gets pretty ferocious! That being said though, it just purrs at low rpm & still sounds great. Haven't tuned car & not sure if I will, it's so quick & fun as it is.

 

When the dfi turbo first came out there were many threads on the subject. Back pressure is measured and ign timing pulled when a decrease is detected. I'm sure a good tune negates this feature. I saw threads on the subject back in 2011 when I had my tts, and it was confirmed to me at the Porsche driving school.
I assume in an effort to protect the engine. If you do a search here, rennlist and rennteam several threads will pop.
I'm certainly no expert, hopefully others can chime in.

 

Two mass airflow sensors (MAF) are used on a 997.1 Turbo to detect the intake airflow and on the older 996 Turbo it is just one mass airflow sensor. The new 997.2 Turbo doesn't have MAF sensors but it uses a manifold absolute pressure sensor (MAP) inside the intake system to decect the intake airflow. The data of the MAP is used by the ECU to calculate the air mass flow.

The ECU does not detect exhaust backpressure though and there is no backpressure sensor anywhere the exhaust system. That's a dead giveaway.
As with the 997.1 Turbo, there is a temperature sensor inside the housing of each turbocharger. The maximum allowed temperature is 980°C, otherwise the ECU will decrease the turbo boost and enrich the air fuel ratio to protect the engine.

With our 997.2 Turbo sport exhaust you will feel the increased hp and torque at low rpm and midrange as well as the sharper throttle response but there is no gain at the top. The same effect happens with better intercoolers, near the top rpm range the ECU takes over and the gains are gone. An ECU flash will transform the benefits of a sport exhaust and better intercoolers into more power but with a stock ECU the maximum output is limited to 500 or 530 hp.

 

Thanks Stef for the accurate and informed response!

Quick sideline: What specific intercooler do you feel is an improvement to the 997 Turbo S OEM one?

Walt

 

i am on softronic tune with europipe. One word "AWESOME"

EP has no drone & gives the TTS a deeper growl compared to stock

 

Thanks for the explanation Stef. I'm enjoying my EP1 on my 997.1 turbo. Quick question, does this explanation apply to the 997.1 as well? Meaning, the standard is 480hp, 505tq (with overboost), with just the EP1 and a stock tune, do I get more hp and tq in the lower RPM range? How much? Can I safely say my car produces, say approx 500 hp now with just the EP1? Thanks!

 

With a stock tune and the EP1 you'll get an extra 28-32 hp so you're at 510 crank hp if your stock engine would produce exactly 480 hp. Torque and hp down low is also up by 25-30. The numbers will vary according to the type of dyno and the amount and the temperature of the fresh air etc.

 

Walt, no specific intercoolers here but I'd only buy from a supplier who can offer an IAT comparison against the stock units.

 

Over the last eight years of Porsche ownership i ve switched over several aftermarket exhausts...Three years ago...i tried an ep2...game over...thank you Stef for your spectacular engineering and craftsmanship...
P.S. regarding ics i find it very difficult to get any ic that has better thermal efficiency than gt2rs/997,2tts ic...remember that during iat tests results were around -20c deg compared to 997,1tt ics...