My brother had his subaru (95wrx 5door) on the R/R down at Plymouth, the first time it was 221bhp, the second time after having a decat downpipe fitted in Bristol, it was only 215bhp! How can this be? Does anybody know which turbo is fitted to this model? Thanks for any advice. Mick.

 

Did he have it R&R'd at the same place, or different rollers?

What time of year were both the R&Rs? Ambient air temps?

 

Rolling Roads do vary
If its a WRX Wagon it will come fitted with a TD04
If its a WRX Saloon it will have a TD05.

Cheers