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Old 06-08-2003, 09:05 PM   #1
silver_pilate
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Join Date: Sep 1997
Location: Lubbock, TX...(TX panhandle)
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Default Advice on injectors...PKRWUD I'd like your advice on this one as well

Well, for all of you that helped on the previous problems I had with fuel, my thanks. It seems to be fixed.

This weekend I tried on a set of 30# injectors a buddy had lying around along with a new BBK adjustable FPR. Anyhow, as you've probably already guessed, it was too much fuel for my combo.

I got it started and the timing set and set the fuel pressure to about 40 psi vac off. The car struggled through lower rpms and ran strong once it got spinning about 4000 and could use the fuel. I backed the pressure down to around 36-37 psi (low as the fpr would go) and it ran better, but still not as strong as with stock injectors. Pushed the pressure to 44 psi for grins and it stumbled bad at idle and low rpms. (If you're wondering, yes, I swapped in a 30# calibration tube into the MAF)

Anyway, I need advice. My car has always run on the lean side. Every time I pull the plugs they're chalky white. I figured the car will like a bit more fuel and that I'm toward the top end of what the stock injectors can handle. Should I simply clean and reinstall the stock 19#'ers and up the fuel pressure, or would it be better to get step up to a set of 24# injectors? I can get a set of 24#'er for $75 more than I have set aside, so the cost isn't a major concern.

Now that I've felt what the car is like with too much fuel, I just don't want to out more cash for a set of 24# injectors only to find that the car still doesn't like it. Do you think I would be ok running the 24's? Let me hear you opinions.

Thanks.

--nathan
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'91 GT, Coast 347, 9.5:1 compression, full intake, Wolverine 1087 cam, exhaust, Keith Craft ported Windsor Jr. Irons (235 cfm intake, 195 cfm exhaust), AOD, PI 3500 converter, Lentech valve body, 3.73's (4.10's in the works), and Yokohama ES100's out back.

Daily Car: '04 Infiniti G35 Sedan 6MT
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