Bigger cams dont necessarily kill low end.
HTA30r, full spool at 23psi with crower s2 cams (bigger than BC s3) was at 3300rpm on 91oct/meth (same spoolup as a local's 47lb s3 on the same dynosheet overlay).
What cams do you have? If you are having considerable low end loss enginejoe, I'd make sure that you have the cams set at true 0,0 with a cam setting tool. Crower and BC cams seem to vary greatly in their quality control, and if not set to true 0,0 your results can vary a great deal.
I have a gtx30, and had an HTA30, OP...It's the business. I dropped my 6262 I had for the GTX30 because I missed my HTA30 for street duty purposes. Send your turbo to FP and get your turbo upgraded and refreshed.
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Last edited by D-SRT; 12-24-2012 at 02:17 PM.