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Originally Posted by RocketyMan
Oh really???
Have you done any oil analysis before with ethanol? Maybe you can run longer intervals? I imagine the alcohol would attract more water in the system.
What about the spark plugs? How do they look? What's stoic for E85? Are you able to take advantage of higher timing values?
Is there a way to fit wideband O2 sensors in and feed that to the DME? Or is that too much programming and such...?
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I have never had to run an analysis on the Chevy. I have done them on the E53, but on gasoline (that’s how I learned I needed rod bearings). I do plan to do an analysis, but not for the affects of E85, but to keep up with the health of my M54. At this point she’s putting out quite a bit of power, so in my opinion it’s best to keep an eye on her health.
As for longer oil life intervals, I would still change at 7000 miles, or one year. The benefit will be cleaner internals. I will say though from my experience, if you do go over it’s a bit different than driving on black nasty oil. Ethanol will attract water, but its not like you go from 80% ethanol, to 50% ethanol, 50% water. A little water doesn’t hurt, believe me. In the summertime, I get lazy to pickup my usual 5 gallons of methanol at times (I run 50/50 in my Meth injection system). So I’ll run 100% distilled water, lots of it.
I’ve never had any problem with my plugs they looked clean. Also, a high ethanol content will keep head temps considerably cooler.
I was very impressed at how the stock dme kept throwing timing!
When the blower, and engine are at temp on gasoline, even with the Meth injection, there have been times (usually when it’s hot outside) when she has pulled timing. I know right a way, because she gets soft at the top.
On the very first test drive, with warm dirty air, I had to back off. There was just no end. All of the five gears did, or will hit redline. Higher timing was definitely there.
There is no need for wideband O2’s, lambda works well.
I have to say, I am pretty impressed with this kit. It’s pretty difficult to get anymore power with the setup I have. It’s like this kit released the power gasoline couldn’t.
I would use this kit on a stock motor as well! It will keep things cleaner, cooler, and allow the engine to maximize performance. And, if you have headers and exhaust, the change in note and backfires is pretty cool as well.