Hiya People

My 04wrx seems to be boosting and spooling a lot later then it did when i had the orignal cat pipe, i changed it to a decate after taking advice from others, saying it would breath better get better revs and i will see a difference.

i still have the original downpipe on the car and arent geting any warning light on dash so what could be the problem.

Your advice is much apreciated

 

hi im new to the subaru scene but iv got the same problem with mine, but mines a race cat it spools up later than it did with the standard cat but from what iv read on here you need a remap to get the benifits from this change of exhaust