well i finally go around to dynoing my car. the result: 281rwhp 344rwtq corrected, 305rwhp uncorrected. all that i have is mac headers no cat and magnaflow catback. my question is, is this good, average or bad for my mods... btw this was on a mustang dyno.

p.s. just a little fyi, taking out your airfilter is good for a loss of 15hp, i pulled 266 with it out

 

That's going to be a tough call, since so few people use the Mustang dyno...

But the airfilter thing has me wondering. Did the dyno operator have any logic as to why letting more air to your throttle body would reduce power? Any chance this was actually due to heat soak or some other issue than the lack of an air filter?

Dave