Quote:
Originally Posted by JETmn
If I am reading this right, then FF wires are only for E85. That also makes sense as the fuel pressure is probably being bumped up to make up for the extra fuel volume being run by E85. High octane gas would not need this as it does not need a great volume of fuel. Pay attention to map 5 and 7 descriptions.
Maps:
Map 0: JB4 disabled.
Map 1: 12.5psi. Suggested for most racing applications.
Map 2: 14psi. Suggested for those with a high flow exhaust and 93 RM2 or higher octane.
Map 3: Progressive meth mapping with flow sensor failsafe. Refer to BMS meth installation PDF for setup directions.
Map 4: Stock map w/ CAN active.
Map 5: Autotuning. Adjusts boost curve from 11psi peak to 16psi peak based on octane, mods, climate, etc. For those running E85 fuels up to a 40% mix can be used along with the flex fuel add on connector.
Map 6: Custom tuning map.
Map 7: 16psi race gas map. 100+ RM2 octane race gas required.
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FF wired are also needed/suggested for any higher than 93 oct gas. FF basically tricks the car into feeding more fuel.. the higher the psi the more fuel you'll need or you'll end up running lean..