Quote:
Originally Posted by SS_Firehawk
You mentioned that TT's with equal length headers would be the best combo, but all I see are short manifolds coming with the kits. Is it a packaging issue? If it were the case, why not install the turbo's farther down or create an equal length header package that fits? Is it because we can just kick up the boost to make up for the inefficiencies?
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It is a price and fitment issue. To do a proper manifold idealy you want short equal lenght runners. This is not possible with the VQ because of the engine layout. The next best thing is mounting the turbo at the end of a properly designed equal length header, like the picture I posted above. Power per PSI with that setup will be higher than with the log style manifolds every time, mainly due to the scavenging effect.
If you want the best twin turbo kit, go and buy a good set of equal length headers. Have a good fabricator cut the three bolt flange off, and have him extend the collector, so that you can fit a twin turbo kit like the one I posted above. With a proper engine build, and turbos, you can get in to the tripple digits.