Hi guys..
Ok.. done a search already on this..
After installing a catback exhaust, it is making these POP noises when coasting in gear. Kinda like gun shots.
My car (r32 GTST) is standard minus a pod filter, walbro fuel pump and catback exhaust. It is running 0.8 bar boost (13.5 almost 14psi)
So I've concluded that I'm running rich and that the fuel is not getting burnt and shot into my exhaust which is hot.. where it ignites and makes the bang? I am correct so far right?
Anyhow.. my questions are: how come my car is running rich with such very few modifications? what is the explanation behind this?
How can i get it to run normal? It's come down to a retune or an SAFC.
A Retune on a stock ecu running such little mods is stupid IMO.. but how much will it cost roughly?
And how much rougly would it cost to install/tune a SAFC?
Thanks in advance, Ben.