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911nut 911nut is offline
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Join Date: May 2001
Location: Michigan
Posts: 2,511
Originally Posted by copbait73 View Post
A couple of statements I must take on:

“Equal length headers yield better off-boost performance but IMO it's hardly worth the effort since a turbo engine spends so little time off-boost.”

Really, you must be something to see in traffic or is this statement based on driving strictly on the racetrack? If you reflect on normal driving you will notice you are on boost maybe 10% and full throttle much less. What does your engine like best off boost, equal length or something other?
Seems like everyone thinks "on boost" means full boost.
When I push the accelerator just a little more than in granny mode, I'm getting 3-5 psi of boost. Acceleration is brisk but not warp speed. That's what I'm referring to.
Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 01-09-2010, 07:04 PM
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