wow.... that vette needs some work, 575whp on meth and Twins, thats just atrocious. he should be in the 700's easy, unless hes only running 1-2 psi, but then whats the point of having twins.
It does need more tuning, but the meth is only a supplement, not like its running on pure meth. Last I saw he was running 5 psi, and for spool purposes. He wants it streetable as it is his DD, and felt that going much higher would lose driveability for him...