Originally Posted By API
Originally Posted By PaulJ

I'm 99% sure the pops and bangs on the overrun are built in when the car is mapped, they don't have to be there, but if anyone wants them removed they will have to find someone who can unlock the ECU first, then remap it. They might even find a few more torques below 3000 revs?


I had made an exhaust by Berchill which filtered the noise better, the pops and bangs totally disappeared.


Birchills Automotive Exhaust Products, yes that's right, on my criteria I made a new sports exhaust but more conventional, the engine does not seem to have lost power, the sound is sporty and finished pops and bangs.

+4 SS 61 #4884/101
Aeromax #95/100
ARP4 #F4200/50
ARP4 #G4026/50

http://www.Collection-voitures.com