What else do I need to do? How long does it take for the computer to adjust to the new fuel amount? What fuel press. should I run? Do you think I would have gotten any faster with my mods?

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Mods: ZZ4 engine w/stock TPI, adj, fuel pres. reg., MSD 8.5, HI6S ign. w/ PS-91 coil, K&N filter, TPI air foil, Hooker comp. shorties, American Thunder flows. 160* stat., TB bypass, 3"cowl, bat. relocate, AC delete.

[This message has been edited by Free Bird (edited August 27, 2001).]

 

Freebird, I'm running a similar set up, ZZ4TPI (edelbrock intake, slp runners, plenum, all ported, SVO #24 injectors, adj FPR, dual SLP cold air box, relocated battery, 1 5/8 SLP headers, MSD 6AL).
I don't think a stock chip will ever re-learn the fuel injectors. I think you have to reprogram the chip to see 24lb injectors vice 22lbers. My Block Learn Mode (BLM) is like 108, which means the computer sees my set up is running rich and is pulling fuel from the mix. My FPR is let at like 38 to 40 lbs I think. I had a stock chip reburned by a friend. We disabled the egr, bumped fuel injectors size to 24lb, changed the fan turn on temps etc. I haven't had time to run the chip yet.
Not sure if this helps at all.
I'm sure you are faster with your mods, the injectors may be overkill. I needed new injectors and opted for the SVO 24lbs for future LT4 hotcom and 1.6rr install. Plus I don't want to run lean. MY ZZ4TPI feels much stronger then the stock L98 I had.

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Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

[This message has been edited by Rob P (edited August 27, 2001).]

 

Rob is correct. You'll need a custom chip programmed to meet your 24lb injector needs. While you're at it..might just as well program a few other things to boot...

V/R,
Frank

 

Try starting at an injector constant of 25.3 lbs. if you use the F*** 24lb. injectors. Thats where I ended up at with fuel press at 44 to get the blm's at 128+- 2.


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86 406

 

What did I tell you about modding, everyone will tell youu too change your comp settings too compliment........................FYI :-)

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j.wolfe
_ ____ _
91 GTA L98
Best time: 14.389@95.49 (VMP)
"...Deception..." Brandon Sloan * ...wounds heal and chics dig scars...

 

Poorboy- have you got the stuff to burn chips yet? I will pay you accordingly. I need a chip bad. I'll might wait untill I get my Mini Ram, LT4 cam, and 1.6RR.

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Mods: ZZ4 engine w/stock TPI, adj, fuel pres. reg., MSD 8.5, HI6S ign. w/ PS-91 coil, K&N filter, TPI air foil, Hooker comp. shorties, American Thunder flows. 160* stat., TB bypass, 3"cowl, bat. relocate, AC delete, stock T-5 w/ 3.42 rear, ported plenum

 

Im not asking antone to burn me a chip..

(read a couple bad posts here)

aprox how much does it cost...how much do you pay?