What would the hp difference be between jet hot lt
s and a hooker y pipe vs mac midlengths and mac y pipe?Would it be a SOTP difference? Assuming the only mods to the car right now are flowmaster exhaust and slap cai car is 94 t/a a4.

 

Do a search my man....there are a lot of threads about this. It depends on what you want and your car. I woulda went with Jet Hot longtubes but my car is lowered. I ended up going with SLP shorties. I have Flowmaster exhaust also. As far are HP you'll find maybe about 5-10hp diff from LT's and shorties.