Can these be made to work, especially since they're rated at GM pressures (unlike SVO), in a stock '90 L98 with an AFPR? Thanks guys.

 

I dont see any major problem in "getting them to work" as long as you install an adjustable fuel pressure regulator (AFPR). You should have the capability to measure the fuel pressure, the O2 sensor output (or air/fuel ratio) and some on road performance level, such as, a 1/4 mile run at the dragstrip. You fine tune the engine performance based on the fuel pressure versus some measureable performance level that best suits you.


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'87 L98 TPI IROCZ, AFR190 heads, 3.70 gears, ZZ9 cam, 2400 Art Carr TC, SLP 1 3/4" headers, SLP cat-back, no cat, no AC, no MAF screens, Accel manifold base & SuperRam, Edelbrock double roller timing chain, MSD ext coil & distributor, trans cooler, 52mm TB with airfoil, TB coolant bypass, AFPR(58psi), K&N filters, Hotchkis lowering springs, my custom chip, Lay Ind. ram air kit, SS Brakes 1LE upgrade 12" rotors dual piston calipers, 265/45R16 Kumho V700 tires.
ET 13.39sec @ 107.21mph
'90 Eagle Talon AWD, no rust thru 9 winters
'99 Camaro SS, red, 6-spd, T-tops, Mcleod clutch, Pro 5.0 shifter, MAF processor, Direct Flow airlid, K&N filter, next mod: 4.10 rear gears
313.7Hp & 320.6ft-lbf, ET 13.55sec @ 105.1mph

 

Thanks, doc. The Holley AFPR is said to go down to 36psi, and isn't stock higher than that? Can I turn down the fuel pressure 2-3psi from stock? That should do the trick, and then when I get more mods the fuel will already be there, unlike with the 21# Accels. Thanks.

 

The stock GM fuel pressure varies a bit from car to car because the fuel pressure regulators vary themselves. A reasonable stock fuel pressure would be around 43 to 45 psi for the later 3rd gen TPI cars.


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'87 L98 TPI IROCZ, AFR190 heads, 3.70 gears, ZZ9 cam, 2400 Art Carr TC, SLP 1 3/4" headers, SLP cat-back, no cat, no AC, no MAF screens, Accel manifold base & SuperRam, Edelbrock double roller timing chain, MSD ext coil & distributor, trans cooler, 52mm TB with airfoil, TB coolant bypass, AFPR(58psi), K&N filters, Hotchkis lowering springs, my custom chip, Lay Ind. ram air kit, SS Brakes 1LE upgrade 12" rotors dual piston calipers, 265/45R16 Kumho V700 tires.
ET 13.39sec @ 107.21mph
'90 Eagle Talon AWD, no rust thru 9 winters
'99 Camaro SS, red, 6-spd, T-tops, Mcleod clutch, Pro 5.0 shifter, MAF processor, Direct Flow airlid, K&N filter, next mod: 4.10 rear gears
313.7Hp & 320.6ft-lbf, ET 13.55sec @ 105.1mph

 

Thanks, man. I'm putting it all in next week so I'm sure tweaking it will be no problem (hopefully).