Yeah, don't change the gauge display, leave it on gas. You can just run it a smidge thinner than on gas.

To get mine running well enough to get it on the trailer, literally all I had to change was reqfuel. And I changed EVERYTHING about the car.

So, you tuned it on the dyno? He didn't add spark angle to reach mbt?

I had it tuned on the dyno long time ago when i still was on stick clutch and bunch of things had changed. I had my head rebuilt, new 3" downpipe, more boost, new clutch , e85.

I did road tune the car for e85 myself, by just scaling the map and leaning it out and making it a little richer in some spots. But did not touch the spark map

On saturday the place had a dyno day so i just did a few pulls for fun and to my surprise got way lower numbers than before.

Can you post up your reqfuels before and after E85, and how you got them?

Meh, I was looking at your spark table vs my old one. Wait until I get home to load my new E85 table, but I'm thinking you can add at least 6-8* everwhere in boost, and as much as 8-10 at the big end. Your map is conservative for 93, weakfailboat for E85.

Wait...you have a 3" downpipe hooked up to a 2.25" exhaust?

That's worse than a 2.25" downpipe and exhaust because you have a sudden contraction, which causes a vena contraction immediately downstream, equivalent in flow restriction to a pipe of about 40% smaller diameter...or 65% less cross sectional flow area.

Your shit will haul balls once you put a real exhaust on there, you might as well have a stock system on there right now.


Oh yeah, and get some knock boxing, tune timing, profit.

Yeah i know. Its whatever the size of magnaflow exhaust.

lol ok lemme know what you get and im pretty sure i can do it on pump gas with no fmic :P

^with what, a fifth injector? You are fucking high.

he does water/meth injection.

So yes, it is a fifth injector, but it's not injecting fuel. :)

actualy i run 2 extra nozzles. 2 stage WMI ftw.
<------is cool enough to buy methanol by the 55 gallon barrel.

Not that much advance here, but we reached mbt and didn't pull timing from there. Built forged 1.9ish engine, 9.5:1, 2000 head with os valves, 2560R with Begi S4 mani and mid-sized fmic, 3" dp transitioning to 2 1/2" dual resonator exhaust (ran out of schekels). FWIW in boost runs of around 12psi I'm logging 11.3-11.6 (gas equiv) AFRs. I do have a tip-in transition to boost that's logging low 10s, but that's with some accel enrichment. I'm still waiting on plots so that I can report more fully.

wow, thats a lot of timing at 184kpa. Do you mind posting your ve table? are you on e85?

Here is my new spark map and one of the logs. I did take out some fuel from the top but still seeing about 10.8 afrs.

on a built motor with lowish compression, i don't see how 20° at 12psi is "a lot of timing" On 93 octane on my stock 1.6L block i run around 17-18° at the same boost...With 8.5:1 CR motors we've pushed 23-24° of timing at +15psi without signs of det... :2cents:

http://www.rif.org/

I was expecting to run more angle, but mbt trumps being able to brag on the webz how much angle you run.

im just sayin' dawg.

kewl, yo. I'm jus sayin, too. That small ball part of me was a lil disappointed that we couldn't push the tune harder and get results. I am very satisfied, however, that I am in a very very safe region overall. Except my trans, of course.

If you are confident in your WB and feel like being a man, pull more fuel. We saw lots of power pulling fuel, 10.8 is fat for that sweet fuckin alky. Get that shit to 11.3 on the big and add some angle to get within 2* of mine then put it back on the rollers. I wouldn't expect a lot more power than with gas, if any, but for a given tune it will be safer.

For whatever it's worth, this screenshot of a log from a dyno pull shows the VE table. And yes, sunshine, it is on E85, or whatever the pumps put out now which is probably more like E70. This pull was probably around 287 whp on a dynapack, but without plots :dunno:.

Edit: I posted the wrong msq associated with the log. Fixed in this post.

Quick question. Do I need to pull out the wideband from the down pipe to recalibrate it or can i jut do it with it in the dp?