my ported FAST 90 added 44HP and 23LBS. that's about right, right?
these gains are normal right? Any input would help.. Thanks guys
but i didnt have heads.. if i had heads is would have been closer to 45ish...
i only had stock ls1 heads at the time..
44 rwhp gain is pretty substantial though.
A gain like this must be mainly in the upper RPMS, but I'd be curious to see how the ls1 intake graph looked compared to the graph with the ported 90. Did the place that did the install/tuning baseline your car, and is it the same dyno you used to get the 396 rwhp with the ls1 intake. Just trying to clarify how accurate your claim is. SAE or STD numbers ?? Post a graph, enquiring minds want to know.
44 rwhp gain is pretty substantial though.

sweetness. good to hear. cant wait
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the OP probably gained that much since he's using heads that are marketed for 6.0L or larger displacement engines (not stocked-cubed Ls1's), plus the fact anything is an improvement over the Ls1 intake, plus who knows how nailed down the previous tune was as well...
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Just out of curiousity, does anyone know how the carb style intakes do with fuel injection and an elbow with throttle body on a mild setup? My buddy keeps talking about doing that kind of setup, but I've never seen any numbers for them on a mild (cam only) setup.
A gain like this must be mainly in the upper RPMS, but I'd be curious to see how the ls1 intake graph looked compared to the graph with the ported 90. Did the place that did the install/tuning baseline your car, and is it the same dyno you used to get the 396 rwhp with the ls1 intake. Just trying to clarify how accurate your claim is. SAE or STD numbers ?? Post a graph, enquiring minds want to know.
Well do you ??
had stock ls1 heads on both pulls... ms4... went from ls1 to ported 9090..









