#20712, "RE: what FMU disk do i need with 315 inj. and SAFC" In response to Reply # 0
I beliece deanoD was trying to run those same size injectors(but without an SAFC) and it was leaning out in the top of the gears. id use the 8:1 disk/ring.
1997 Silver RS Built T3/T4 BB Turbo 20psi Most current 1/8th mile time: 8.1@93mph 2.015 60' 1996 Black Supra TT 2004 Silver Snake
#20714, "RE: what FMU disk do i need with 315 inj. and SAFC" In response to Reply # 2
I have the star kit and use an 8:1 disc/ring in the standard vortech fmu. I used Accel 30LB injectors and no S-AFC. 8psi boost=1550 egt and 10psi=1600 egt This is the most boost you can run on a stock bottom end and be fairly safe with 93 octane. If you are using 91 octane, I would not go over 8 psi unless you have some race gas mixed in.
There is no need for a S-AFC with this setup. If you have a S-AFC, buy corbin's boost sensor and a set of 42LB injectors. This way when your bottom end is built, your fuel system will support 15 psi daily. Above that, there are many other mechanical/ignition issues you have to deal with.
97 RS(PTE SC-61, Built Long Block, Electromotive Tec 3)It's Here!
#20716, "RE: what FMU disk do i need with 315 inj. and SAFC" In response to Reply # 4
>i thought you were suposed to use the 6:1 disk with 30lb >injectors and no SAFC? BTW how much do 42lb inj. cost?
every car will be different. Also, Deano has the star kit, so he will need more fuel than me at the same boost level cause of the bigger turbo...dont know why he needs so much more than i seem to tho...hmmm....
check out the example @ corbin's page. make sure you plug in 100% duty cycle tho. since your not running a SAFC, the stock ecu will run the larger injectors @ near 100% DC. that will make a huge difference in the formulas.
also, use the formulas as a starting point, not nec. the exact numbers, but will be a good place to start at
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