wrong...
the bigger the piping is for a turbo car...the faster the turbo will spool up...my turbo starts spoolin at about 2200rpm and will be at full boost before 3krpm with my 3"exhaust set up and will boost up to 6500rpm.....my 2.25 exhaust before was spoolin up to 6500rpm and starts at around 3krpm...it really depends on your turbo..not your exhaust.......turbo will spool up to a certain rpm depending on exhaust size....
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Originally Posted by 3sgte@daspeedof
See your wrong on all accounts.
A turbo car needs a little back pressure to spool up, with a full 3" your gonna get more top end power, with a 2 1/2" your gonna get more low end.
Boost kick in around 3200 rpm, and cut at about 5500 thats for a 2 1/2"pipe straight back
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