Thread: S54 FI Comparo
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Old 01-10-2013, 05:25 AM   #7
SPDu4ea
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Join Date: Oct 2007
Location: NorCal
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If by track you mean road course, consider that the HPF kit was not meant to supply meth under those conditions (sustained WOT & high lateral g's) so you should plan on stage 1 power. Area under the curve may still be better, but the SC kits will probably make more peak power (on pump that is; buy 110 leaded and flip the race gas switch & hpf completely dominates).

The maxpsi kit looks to make comparable peak power to the SC kits, being based on higher octane pump fuel (92-93 vs 91) & using DME tuning that can adapt somewhat to fuel quality.

If you can get E85, hpf also offers an ethanol tune for the stage 1 which actually makes more power than the stage 2, but isn't "flex fuel" so you'll need to have a consistent/reliable supply of E85

Last edited by SPDu4ea; 01-10-2013 at 05:26 AM.
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