Quote:
Originally posted by TalonTSiDude@Mar 17 2004, 12:49 AM
The EVO's have a slightly more retarded gasket than the DSM's do...but a nice 7cm gasket will give you a nice gain. Your stock gasket is basically a restrictor plate with 2 holes in it to allow the exhaust flow. I believe all EVO-certified Mitsu tech's were briefed on this so maybe 1quick4 will know more about it. I have heard if you remove it the warranty will get voided...but then again going to the grocery store will have the same end result.
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IIRC the Evo8 has the equivalent of a 9.8cm gasket, and switching to a non-twin scroll gasket will kill the spoolup(add a shitload of lag).The idea of a twin scroll setup is to keep cylinders 1 and 4, and 2 and 3 exhaust pulses separated all the way to the turbine wheel, preventing them from meeting in the manifold out of phase.This allows the Evo to have a larger turbine housing and better spool than normal setups.