nacanitihs

ok so i just got a zex wet kit. i will most likley be running a 75 shot. (have the jets for 50, 75, 100, 125) soon i will be getting a MAF for the 24# injectors i already have (not installed obv). also an adj fpr. also i will be getting a wideband O2 sensor to monitor the A/F ratio.

now what is a good A/F ratio to have? i dont want to run lean. and what is a good fuel pressure at idle and when the FPR vac hose is plugged (max fuel pressure)??

also can i only monitor one bank with the wideband or do i need to have two of them? if i can only do one side which one should i do? dirvers or passenger?

also i will be installing my gt40 explorer intake soon too.

thanx

contentsunderpressur

At idle and cruizing you should be around 14:1 on the a/f. WOT you want it to be around 12:1. It doesn't matter which bank you put the wideband in.

mjr46

12.5 to 13.0 is a safe range and monitor which ever bank you want to start with and fp at idle around 35 and unplugged 40 ish

bikeboy587

N/A you want a 12:1 at WOT, with nitrous though you want 10.5-11.5: at WOT, and the ZEX brain box thing will automatically make your car run rich, they do that on purpose so it is harder to blow your **** up. the only way to trick it into leaning out to the 11-11.5 range is to up the nitrous jet a size while leaving the fuel jet alone.[/align][/align]BTW, don't forget to put one step colder plugs in, gap them about .040, and run only 93 oct when spraying[/align]

TTGreenSN95

I dont think it matters what side you put the wideband in but.......

I heard that the #1 cylinder is the leanest so I would imagine that you would want to put it on the leanest side of the motor........just my opinion......