im actualy not surprise with the gain ,
remember the OEM header arent that good with a very bad collector
also remember the OEM cats are very restrictive , people are easily getting 15whp just with test pipe
then next he got an Uprev tune that can maximise his gain by atleast 5-15whp ...
so no im not surprise with that but the dynojet seem to read quite high for a a stock baseline. gaing is gain anyway !
Last edited by Megan370z; 01-10-2012 at 06:10 PM.
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