| or in between mods? I have a very similar setup to you and I have been able to dyno after most major HP upgrades- 335rwhp- Bought the car previous owner had boost jets (14psi), intake and gutted precats. 355rwhp - Installed Profec B (16PSI on Dyno), Stillen Exhaust X pipe 370rwhp Private Dyno tune W/ Wideband O2, 17PSI advance Timing from 13BTCD to 16BTDC ( I have since back the timing down to 15Deg. ) ????RWHP Next Saturday Test Pipes? and 17PSI, 15BTDC I hope this helps, I know what your talking about with the Profec B I leave it on the low setting(13-PSI) and sometimes it seems more responsive on the low setting?
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