[Iwannajag]

Originally Posted by churchx

Hmmm, hmm, so +6whp improvement is not over catted stock header, but over decatted one? I'd still expect more from Ace, but maybe this is it? As in - also catless frontpipe, catback, aftermarket filter .. and those big gains for Ace were reported over everything rest being stock, except header & tune. One thing is gains for single component improvement on otherwise restrictive stock intake/exhaust tract, another - when almost everything is replaced and one hits diminishing returns on upgrading last bit. Or stock baseline you were comparing to was really 'stock' one .. stock tune, stock catback, stock headers, stock filter, stock both cats?

Many have seen way more (190+) so it must be something specific to my situation/configuration