This is an obvious question, but no one seems to have asked it... the guys over in the dyno section seem to regularly measure the wheel HP after making mods to their cars, but no one seems to have done a before/after freqency response measurement for any of the mods they're describing.

Since more than a few of us would like to benefit from others' collective wisdom... has anyone done anything like this with their vehicle? If so, care to share?

 

Hard to do without an RTA, and that is something most of us don't have access to. Even if a local shop had one, it's not like I would want to put up their crap for trying to use it...

Now if I had one, I'd be more than willing to map out the entire stock system and see how changes in speaker placements and etc impacted it.

 

Do you think something like this might work...?

HanDee Spectrum Analyzer

 

MY uncle owns a proformance shop, I got a cold air and exhaust it only gave me about 17 more horses but, did make a difference.