i have a hks exhaust, and im looking for a downpipe... i want something loud and a lot of power gains. that would fit on my exhaust... and without have a cel...
which is better perrin dp, invidia catless, tanabe catless??
Personally I would go with the Invidia cattless V3 downpipe. It has a huge bellmouth and it has a divorced wastegate. If you want more info regarding that DP send me a PM. I recently installed one on my 06.
I agree the TXS is larger, but its quite a bit more money. He would also have to get the adapter pipe to mate the TXS downpipe to the HKS catback. I've had two TXS downpipes, one Perrin, one Helix and one ERZ downpipe and I liked the Helix the best because it is a quality made downpipe for a decent price and it has a wideband o2 sensor bung about 4" after the turbo flange.
from what i've heard from many is that there are a lot of fittament issues with the hks catback and other dp's. therefore if you have the hks catback it may be easier to buy the hks dp, but unfortunately its not of good quality.