Renntech ECU tune experience
Strong all over all rpms. Biggest gain is at lower rpms, the car pulls like a beast. Feels stronger even at 6000rpm. I believe the 773hp quote. Will post some 0-60 times when I can.
Installing the exhaust control module this weekend.
800 watt amp with sub added at the same time as the ECU tune. Car really is turning in to the Deathstar. What a machine.
My humble $0.02
Strong all over all rpms. Biggest gain is at lower rpms, the car pulls like a beast. Feels stronger even at 6000rpm. I believe the 773hp quote. Will post some 0-60 times when I can.
Installing the exhaust control module this weekend.
800 watt amp with sub added at the same time as the ECU tune. Car really is turning in to the Deathstar. What a machine.
My humble $0.02
Strong all over all rpms. Biggest gain is at lower rpms, the car pulls like a beast. Feels stronger even at 6000rpm. I believe the 773hp quote. Will post some 0-60 times when I can.
Installing the exhaust control module this weekend.
800 watt amp with sub added at the same time as the ECU tune. Car really is turning in to the Deathstar. What a machine.
My humble $0.02




Strong all over all rpms. Biggest gain is at lower rpms, the car pulls like a beast. Feels stronger even at 6000rpm. I believe the 773hp quote. Will post some 0-60 times when I can.
Installing the exhaust control module this weekend.
800 watt amp with sub added at the same time as the ECU tune. Car really is turning in to the Deathstar. What a machine.
My humble $0.02
you pay more, but you keep the warranty. (this is true for the dealer near me in Texas, USA)
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Installing the VTA's later today. The only thing i did not go with is the suspension module, for the E63 I think it sits just right and I don't want to have the stress of uneven tire wear and have another thing to keep adjusting
Installing the VTA's later today. The only thing i did not go with is the suspension module, for the E63 I think it sits just right and I don't want to have the stress of uneven tire wear and have another thing to keep adjusting


I went with the Renntech exhaust module to be able to control the valves. I looked at the CPC tune from Wiestec but I just thought that was overkill because the car is almost too fast already with a Renntech HHT. Nothing against Wiestec but I have heard a few issues with their ECU tunes causing errors. Over 750hp is more than enough power for the street and track (unless you are doing drag racing). I want to feel piece of mind that my transmission and differential will be safe for the long haul. I only want to worry about replacing spark plugs a bit earlier because of a tune and nothing else. My 2cents for owning a 2second car.
I went with the Renntech exhaust module to be able to control the valves. I looked at the CPC tune from Wiestec but I just thought that was overkill because the car is almost too fast already with a Renntech HHT. Nothing against Wiestec but I have heard a few issues with their ECU tunes causing errors. Over 750hp is more than enough power for the street and track (unless you are doing drag racing). I want to feel piece of mind that my transmission and differential will be safe for the long haul. I only want to worry about replacing spark plugs a bit earlier because of a tune and nothing else. My 2cents for owning a 2second car.
This brings about a few other issues, traction, most guys spin and get loose without a tuned cpc, a tuned cpc makes this even worse with the extra tq of course.
CPC TQ limits, Most customers dont ask what the stock TQ limits are per gear, and they dont ask what they are being set to with the tuned CPC.
Some companies are setting the tq limits on their CPC very aggressive, this can cause reliability issues down the road and even damage to the drivetrain. So please, ask questions and be safe.




