Car runs very rich on hack

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Old Aug 10, 2004 | 12:22 PM
  #1  
MooreBoost's Avatar
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Default Car runs very rich on hack

Im running a DOHC ZC, 88 Teg ECU, 14b turbo @ .5 BAR.

I put in the "standard" hack settings, -40 @ 1000 to -36 @ 7500. My car runs very lean at idle with this setting, like 18:1. Previously I had the settings at -29 @ 1000 to -18 @ 7500. These made the car run very rich at WOT like 9:1 but good at crusing around 14:1. I reset to the "standard" setting because it would break up at high RPM from running so rich, and I think its fouling up my plugs.

Is something wrong? Or do I just need to find a median? Would it be best to do this on the street with my wideband or just get it on a dyno ASAP?
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Old Aug 10, 2004 | 12:27 PM
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Default Re: Car runs very rich on hack (tegunderpressure)

turboedit would solve all your problems
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Old Aug 10, 2004 | 12:50 PM
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Default Re: Car runs very rich on hack (toolowsol)

My ECU cant be socketed. Already tried.

Do I need to remove my stock fuel pressure regulator for the hack?
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Old Aug 10, 2004 | 01:06 PM
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Default Re: Car runs very rich on hack (tegunderpressure)

Your baseline should be:

(Stock injector size)/(New injector size) - .95

Assuming your new injectors are larger than stock.

After you get that right, so that the engine rund stioch. without boost, you can adjust to compensate for boost.
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Old Aug 10, 2004 | 07:10 PM
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Default Re: Car runs very rich on hack (beepy)

So we have (240/450)-.95 = -.41 . Which would put me back at the "standard" settings which make me run very lean.
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Old Aug 10, 2004 | 08:36 PM
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Default Re: Car runs very rich on hack (tegunderpressure)

So adjust it to somewhere in between the "standard" setting which makes you too lean, and your old setting which made you too rich... and find the right setting which makes it just perfect....

Matt
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