usually good custom exhaust job will have power gain.Hi,
I recently converted my E54 Galant from 6A12 to 6A12TT from E84 VR4.
Has anyone here run custom front exhaust pipes from turbo outlet an had any good gains in power?
I notice that mid range power is good till about 5k rpm, but engine does lack top end power. Mine is manual version with blue tab TD025 turbos. Everything is stock at the moment.
how good it is depends on the work.
with turbo, u can go bigger, but not too big.
i guess the down pipe (not dump pipe) can be as big as 2" and the exhaust go for 2.5".
better ask Danzeterna as he's using TT engine, i'm on a 4G. hehe..
for the top end power, u might need to tune back the engine and find the best AF ratio.
maybe the fuel is too rich or too lean..
---------- Post added at 02:57 PM ---------- 6 hour anti-bump limit - Previous post was at 02:56 PM ----------
screett sound might just be the belting (alternator or aircond) is too loose or too tight.My engine has a wired sound like screeettt..!.screett!....Im heard at timing belt....whatbwas that?...its a bearing...?
or maybe the belt needs replacement..