Thread: Gt30-76r
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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
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Originally Posted by drmatera View Post
...I have run both the .70 a/r and the .55 on the dyno. Same wastegate settings yeilded peak boost about 700rpm sooner with the .55 with no sacrifice in power at 6000rpm. I took it to 6200 on one pull but my gut chickened out before the power dropped.
Wow, that is a big difference.

Would be interesting to see if there is a differance in peak HP or HP at say 6000rpm between the two. If the smaller AR is making much less HP then this might indicate the exhaust is building more pressure in place of testing back pressure at the header.
Old 10-13-2010, 10:53 AM
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