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I was wondering if anyone has tried to run E85 to avoid detonation on a boosted LQ1 before, I was planning on running L69 GTP injectors to get the fuel flow up. I calculated it out and figured that I should be running 32lb/hr injectors for E85 and the GTP ones from what I read are rated at 33lb/hr but actually flow 36lb/hr. This is all assuming that the stock LQ1 injectors are 23lb/hr and the in gasoline terms I would want a 12.5:1 AFR which in E85 terms would be 9:1 AFR. The queston I have mainly is whether the computer can compensate for having an extra 4 lb/hr of flow in the injectors?
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That's a large bump in the injector size. The computer will not be able to compensate without retuning or a piggyback. E85 can and will corrode any aluminum it comes in contact with.
Tim1995 Z34 - T04E "60" trim, 42.5 lb/hr injectors, AEM WBO2, FFP UD&DB, 3" exhaust, 2800 stall, shift kit, tranny cooler, Powerslot, Hawk HPS, rear disc conversion, KYB, Eibach, HMS F&R STB, Fittipaldi Force 18" wheels, big stereo, lots more coming eventually...
325 whp 350 lb-ft -
How do the newer GM models get away with running E85? They didn't switch back to an iron head?Originally posted by timg View PostMega Squirted Fiero
How I did it hereComment
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not all E85 cars have iron headsComment
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The anodized the aluminum fuel system parts (or provided some other treatment) to prevent corrosion caused by E85. It doesn't seem to be an issue on heads, just parts that are always in contact with a lot of it (the fuel system).
Tim1995 Z34 - T04E "60" trim, 42.5 lb/hr injectors, AEM WBO2, FFP UD&DB, 3" exhaust, 2800 stall, shift kit, tranny cooler, Powerslot, Hawk HPS, rear disc conversion, KYB, Eibach, HMS F&R STB, Fittipaldi Force 18" wheels, big stereo, lots more coming eventually...
325 whp 350 lb-ftComment
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The corrosion issue with E85 is that it is hydroscopic and absorbs water, like brake fluid. Since the same fuel doesn't tend to sit in the fuel lines for days or weeks, it's probably not an issue.
My friend has run his '95 Talon on E85 on quite a few occasions. It runs high 11's on the stuff. There's an experiment on www.realfierotech.com in which a guy dropped a fuel pump into a jar of E85 and left it there to see how much it would corrode. Look it up.
To just get a car to run E85, all it takes is a bump in injector size. The computer doesn't care what the new injector size is, as long as the relationship of pulse width to stoich AFR doesn't change (stoich is considerably lower with E85 than with gasoline).Current:
\'87 Fiero GT: 12.86@106 - too dam many valves; ran 12.94 @ 112 on new engine, then broke a CV joint
\'88 Fiero Formula: slow and attention getting; LZ8 followed by LLT power forthcoming
\'88 BMW 325iX: The penultimate driving machine awaiting a heart transplant
Gone, mostly forgotten:
\'90 Pontiac 6000 SE AWD: slow but invisibleComment
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e85 also loves compression..the higher the better...i would love to be able to run it in the alero...just dont have the funds for tuningComment
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I've been running E85 on my car for 3 months with no problems. 94 cavalier 3400 turbo. I already had bigger injectors so I just tuned it for the E85. it was easy'94 Cavalier Z24 3400 Turbo 5 spdComment
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