Not trying to be off topic .. today I played with my freinds M3 that I beat the other day and we made some videos.. BTW- i have a 04 STI with ecutek, downpipe and I now just added a exhaust... I know it added more power becuase when I got it reutned and dynof after I installed it it showed me 8 whp more... but for some reason I feel as tho it pulled harded when I just had the downpipe with stock exhaust??? can ite be that I lost low end power? or torque?? it really frustrates me . I spent so much money on my exhaust and feel like it's slower... can anyone explain?? It can't be I went from 2 inch to 3 inch right??