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Old 09-19-2008, 08:19 PM   #1
Scooby Guru
Member#: 64673
Join Date: Jun 2004
Chapter/Region: NWIC
Location: portland
1990 Legacy wagon
goes 12.387 @ 116.5

Default 20ish psi, E85 and 800cc injectors = .........

Well I found out how much 800cc injectors and E85 makes….

Not much.

The motor made a max of 288 whp/330ish torque @ 21 psi and ran out of injector @ 6000 rpm.

Turning the boost down to 19 psi was 265 whp with a moderately safe tune. But the MAF was hitting 5 volts with the piggyback adding in voltage up top….

This was done @ PRE on a DynoDynamics dyno. Sorry, neglected to get a dyno sheet. The torqe and power curves were good up until 5000-5500 rpm when I would start to degrade a bit. I was having some missing issues (we were pretty sure it wasnt det), and this could have been old sparkplugs. The AFR line was pretty damn ugly. "Safe" but ugly. The Walbro 255 just wasnt able to pump enough down low 4000-5000 rpm, then the fuel pressure would ramp up some due to the boost level, then the MAF would run out.

Since it may be awhile before I find (if ever) 1200cc sidefeeds, I am switching back to gas, as I have made 100+ more hp with the same setup.

Ah well, I just wanted to see what the injectors and E85 was good for, and now I know.
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