I have an 02 sti with a few mods ie uprated fuel pump, remap, exhaust system. Before the cars MOT it had a decat downpipe fitted and the power charts i sent by JGM stated that the car was putting out 339bhp.

The gararge that i purchased the car from have since removed the decat downpipe for a standard one to pass the MOT. I was just wondering what sort BHP would the car be putting out now?

Cheers.

 

very restrictive but its a guessing game

maybe about 300-310

 

thanks mate.

 

My MOT guy said they are inforcing a huge fine for cars without cats, might be wrong but it was a huge fine like £4000.