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Old 06-17-2010, 11:31 PM
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byndbad914 byndbad914 is offline
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Default Bought a 2010 Vette Grand Sport LS3 - E85 upgrades?

I believe converting the car to run on E85 voids the warranty, but here in CO it is pretty plentiful and I have to think the car could be tuned with some more timing, etc to run E85 with the high compression the car has and make more power with a simple fuel swap.

that said I have a hard time after looking around the net determining if I would actually need to upgrade the injectors, etc etc. I don't want to swap the cam yet or anything and would really like to do a minimal change that can be easily changed back should I have an issue I want fixed under warranty.

It is hard to say if a fuel swap will make any real difference since the high altitude here tends to accept higher compression ratios better, but with 91 octane premium I am thinking that the computer may have to pull timing, etc when I am really on it to not ping, etc.

So anybody know if an E85 switch is simple, if the injectors will handle it assuming no other changes beyond a tune for E85, and what tuning software items are out there to use with the swap?

I know that when I lived in SoCal and built the engine in my race car in my avatar I dyno'd it on a near perfect sea level day and made just under 500HP before the 93 octane pump gas began to detonate at 34deg timing on a 10.5:1 combo with a big cam that would have bled cylinder pressure. It made 525HP after swapping over to race gas and bumping timing just two more degrees, so I certainly can see that there may be some free HP to get from better fuel with the high compression of the the LS3.
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