997tts Europipe Users Question?
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From: Agoura Hills, CA
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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.
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 for responding to me email relative to this issue. I appreciate you posting your response on 6Speed, and am very impressed with your prompt and professional feedback. I look forward to doing business with you!
Tim
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From: Corpus Christi, Texas
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There may not be a true back pressure sensor in the exhaust system, but the ecu does monitor pressure on the intake side large expansion manifold and compares this with other parameters and is capable of pulling timing. when you flash the car, this can be adjusted and the car will really run good with the ep.This is something unique to the 997.2.
It's not just me saying it, ck out a thread over on rennteam. Where there's smoke, there's fire.
It's not just me saying it, ck out a thread over on rennteam. Where there's smoke, there's fire.
Former Vendor
Joined: Feb 2010
Posts: 356
From: Belgium
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That car has a 9ff exhaust with valves so that at full throttle you're running with straight open pipes. Our EP sport exhaust has nothing in common with that system.
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