402 LS2...730+hp
05-19-2009, 03:50 PM
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402 LS2...730+hp My build is finally complete (engine-wise) and the car is in the process of getting painted :-) It dyno'd at around 540rwhp N/A and around 730rwhp on the juice.
My question is this: although it proved itself on the dyno, is the '98 PCM sufficient for my power levels and application? I've read threads recommend upgrading to a '99+ PCM if it's boosting over a certain psi (14psi I think). But since I have a nitrous application (200 shot)...with a VERY agressive cam, is it worth going through the hassle of "upgrading" to a '99+ PCM? The car runs great (above 1k rpm), but has a horrible idle...if any. Since the '99+ PCMs have additional tuning tables and features, do I risk damaging the engine by sticking to a '98 PCM? Or will those additional features only help with around the town driveability.
My question is this: although it proved itself on the dyno, is the '98 PCM sufficient for my power levels and application? I've read threads recommend upgrading to a '99+ PCM if it's boosting over a certain psi (14psi I think). But since I have a nitrous application (200 shot)...with a VERY agressive cam, is it worth going through the hassle of "upgrading" to a '99+ PCM? The car runs great (above 1k rpm), but has a horrible idle...if any. Since the '99+ PCMs have additional tuning tables and features, do I risk damaging the engine by sticking to a '98 PCM? Or will those additional features only help with around the town driveability.
05-19-2009, 07:18 PM
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There's way too much to list. But I have forged everything with custom cut diamand flat top pistons, custom grind comp cams camshaft, callies crankshaft, fast 90/90, 1 7/8 longtubes, etc. It has a nx direct port system.
