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Running 720cc with stock ecu....is it hurting me?

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Old 09-11-07, 02:43 PM
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Running 720cc with stock ecu....is it hurting me?

I dont have a SAFC or standalone or anything. I'm running 8 PSI (autometer boost gauge) with an FCD and 720 secondaries. Is that bad or am I better of running stock 550cc.

What damage can running too rich do to my car except hurt my wallet with gas cost?
Old 09-11-07, 02:55 PM
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well, the stock ECU doesn't know the injectors are bigger. you could run really rich most the time, however I don't have personal experience or much research time invested in this, and I would like to know some details, too, as I will be installing a FCD soon, hopefully porting my wg, and running straight exhaust.
Old 09-11-07, 03:42 PM
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i ran 4 720 secondary injectors for about 4 months and it does run rich, gets a lil worse gasmilage, and mine started harder when hot, but i think w/ 720 secondarys it will just be worse gasmilage if you have your foot above 3800rpm.
Old 09-11-07, 03:55 PM
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So its just gas mileage then...?

Cool.

No increase in carbon build up or anything? I run premix.
Old 09-11-07, 04:09 PM
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i dont know about premix, sorry
Old 09-11-07, 04:57 PM
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whats going on?

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dont fucken do it. JESUS.
Old 09-11-07, 05:22 PM
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too much fuel means the car runs cooler, right? That's all I came up with LOL. I don't know what problems this causes but other than the $$ lost to crappy MPG i don't see what could go wrong.
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