Originally Posted by abdr500
Chip-3Door
head gasket
lifters
exshust cam
fitted water injection
added a flex pipe to my down pipe
The exhaust can wont flow as much right at the top end so would lower the bhp a tad...
If the water inj is kicking in then that will reduce bhp a bit too...
If the flex pipe is stightly narrower then it wont flow aswell and that will bring the bhp down some more...
Just my 2penneths worth
