May 26, 2016, 04:18 PM
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How to run your LS1 on E85
I can't seem to locate my old E-test. But here are the results from my new one. And again, my injectors aren't being completely controlled so there was a bit of extra fuel being dumped in at close throttle, as well as my FAST intake leaking.
HC GPM 1.1434 LIMITS are 1.2000
CO GPM 7.6535 LIMITs are 20.000
CO2 GPM 493.3505
NOx GPM 1.7800 LIMITS are 3.000
My failed test has this comparison
TYPICAL PASSING CAR My Car
HC .32 G/MI 1.89 G/MI
CO 4.66 G/MI 16.34 G/MI
NOx 1.50 G/MI 1.54 G/MI
I am assuming the GPM and G/MI are grams per mile and I don't know what a TYPICAL PASSING CAR is. Could be a four cylinder or maybe my make and model. Looking at the printout from the failed test it appears the CO2 and NOx are inline with what they should be even with the extra fuel and a vacuum leak.
HC GPM 1.1434 LIMITS are 1.2000
CO GPM 7.6535 LIMITs are 20.000
CO2 GPM 493.3505
NOx GPM 1.7800 LIMITS are 3.000
My failed test has this comparison
TYPICAL PASSING CAR My Car
HC .32 G/MI 1.89 G/MI
CO 4.66 G/MI 16.34 G/MI
NOx 1.50 G/MI 1.54 G/MI
I am assuming the GPM and G/MI are grams per mile and I don't know what a TYPICAL PASSING CAR is. Could be a four cylinder or maybe my make and model. Looking at the printout from the failed test it appears the CO2 and NOx are inline with what they should be even with the extra fuel and a vacuum leak.
I know this is late, but I have a set of Patriot LS6 Stg2 head what the chamber was reworked to 59cc. I know that would help, but I wanted to wait till I do my 383 for the TransAm.
I can't seem to locate my old E-test. But here are the results from my new one. And again, my injectors aren't being completely controlled so there was a bit of extra fuel being dumped in at close throttle, as well as my FAST intake leaking.
HC GPM 1.1434 LIMITS are 1.2000
CO GPM 7.6535 LIMITs are 20.000
CO2 GPM 493.3505
NOx GPM 1.7800 LIMITS are 3.000
My failed test has this comparison
TYPICAL PASSING CAR My Car
HC .32 G/MI 1.89 G/MI
CO 4.66 G/MI 16.34 G/MI
NOx 1.50 G/MI 1.54 G/MI
I am assuming the GPM and G/MI are grams per mile and I don't know what a TYPICAL PASSING CAR is. Could be a four cylinder or maybe my make and model. Looking at the printout from the failed test it appears the CO2 and NOx are inline with what they should be even with the extra fuel and a vacuum leak.
HC GPM 1.1434 LIMITS are 1.2000
CO GPM 7.6535 LIMITs are 20.000
CO2 GPM 493.3505
NOx GPM 1.7800 LIMITS are 3.000
My failed test has this comparison
TYPICAL PASSING CAR My Car
HC .32 G/MI 1.89 G/MI
CO 4.66 G/MI 16.34 G/MI
NOx 1.50 G/MI 1.54 G/MI
I am assuming the GPM and G/MI are grams per mile and I don't know what a TYPICAL PASSING CAR is. Could be a four cylinder or maybe my make and model. Looking at the printout from the failed test it appears the CO2 and NOx are inline with what they should be even with the extra fuel and a vacuum leak.
My readings:---------------- State Standards:
HC GPM 1.1434 ------------- LIMITS are 1.2000
CO GPM 7.6535 ------------- LIMITs are 20.000
CO2 GPM 493.3505 -----------
NOx GPM 1.7800 ----------------- LIMITS are 3.000
Last edited by vaticano; Jun 19, 2008 at 08:30 PM.
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Shift points, fluid pressure. I don't remember everything, but if you read this thread it will explain. http://forum.efilive.com/showthread....=tranny+tuning
I have not had time to upload the truck tune yet, but I will soon though. It gets 20-23 on the hwy at the moment. But, in town it sux *****!
I would have to say yes, they would void the warranty, if they know. I have heard that GM will be modifing the PCM so that they can tell that it has been messed with. At the moment I do not believe they can.
How does this said tranny adjustment work with towing?
Not sure. I have a button for towing I believe makes similar adjustments as the ones you would make for performance. It holds the gear longer and shifts harder/faster. Check your tune it should have a separate set of setting for towing/performance.
Yea, I have that little button as well..
TECH Apprentice
Joined: Jun 2008
Posts: 391
Likes: 0
From: Mesa, AZ
My mustang couldn't even run E10. lol.
I'm surprised that the Z's hold up well on E85. I'll stick with the brands of clean gas I know and love because they DON'T have ethanol in them for now.
I'm surprised that the Z's hold up well on E85. I'll stick with the brands of clean gas I know and love because they DON'T have ethanol in them for now.
I don't know if someone has said this already, but there are a couple gas station that state the regular grade has 10% ethanol, but they are the same price if not just a couple cents less than a good brand of gas like Shell or BP. I always use BP in the Strip car and E85 in the TransAm.
Quick question for you guys running E85. With an LT1, to get 30% more fuel, I have to change the injector constant to 'trick' the PCM to give the extra fuel needed for E85.
My question is this: With gas injector constant of 31.68# (30# SVO's) do I multiply by .7 (22.18#) or divide by 1.3 (24.37#)? I assume divide by 1.3 so that when the PCM assumes that it is fueling 24.37#, it is really putting out the 31.68# of the injectors, or 30% more than 24.37#?
Just wondering which calculation is correct or everyone else is using?
My question is this: With gas injector constant of 31.68# (30# SVO's) do I multiply by .7 (22.18#) or divide by 1.3 (24.37#)? I assume divide by 1.3 so that when the PCM assumes that it is fueling 24.37#, it is really putting out the 31.68# of the injectors, or 30% more than 24.37#?
Just wondering which calculation is correct or everyone else is using?
Thread Starter
TECH Fanatic
Joined: Aug 2003
Posts: 1,130
Likes: 1
From: Tranås, Sweden