My LS-Coupe Turbo Build

[dville_gt]

E85 needs 48% more fuel flow compared to the exact same engine running on Gasoline, what duty cycle were you at before?

just under 80% DC...but that was @ 43psi of fuel pressure (which yields ~80lb/hr out of the injector), @ 58psi they yield ~ 92lbs/hr.

That would buy me another 15% more fuel by just increasing my base fuel pressure. If I added another 14gal/hr meth nozzle in the mix it would give me ~10% more fuel putting me 25% over where I am at.

Still would be very high DC, but I've seen multiple cars that show over 100%DC and don't have any problems (not saying it is right, but the DC calculation is not exact anyway).

[dville_gt]

Crippled is having to replace a piston. Being down 30rwhp at 10 degrees of timing is making an engine last on pump gas. You need to quit putting faith in your Craig's list methanol injection system.


How many full passes did you make at 17lbs and 15 degrees? 6-7?

true, but i don't believe 10*/10lbs -> 16*/17lbs = 30rwhp.

[dville_gt]

just under 80% DC...but that was @ 43psi of fuel pressure (which yields ~80lb/hr out of the injector), @ 58psi they yield ~ 92lbs/hr.

That would buy me another 15% more fuel by just increasing my base fuel pressure. If I added another 14gal/hr meth nozzle in the mix it would give me ~10% more fuel putting me 25% over where I am at.

Still would be very high DC, but I've seen multiple cars that show over 100%DC and don't have any problems (not saying it is right, but the DC calculation is not exact anyway).

This isn't taking into account that my AFR's were pretty fat anyway, typically ~10.8-11:1, so my DC was probably showing a little higher then it would had I leaned it out to 11.8:1

[89FivePointOh]

wonder how much hp my current fuel system would support on e85.

92lb injectors, eliminator pump, -10 feed, -8 return. i could still use the meth injection if i needed it for extra fueling. i just really don't want to have to deal with finding e85 all the time.

James....you have plenty of fuel for that to run on E85!

I had -10 to/from tank, twin 255 Walboros, 1200 cc Injectors and my car was leaned out 41% with that setup....

[89FivePointOh]

This isn't taking into account that my AFR's were pretty fat anyway, typically ~10.8-11:1, so my DC was probably showing a little higher then it would had I leaned it out to 11.8:1

I always use the theory of never going above 85% DC on an injector. If you were at, lets say 78%, and now you put E85 in the tank, you may be close to 90% DC. Not saying you can't run them this high, but it was a rule of thumb that I used when I had my 2002 GT w/601 on 18 PSI....

[dville_gt]

I always use the theory of never going above 85% DC on an injector. If you were at, lets say 78%, and now you put E85 in the tank, you may be close to 90% DC. Not saying you can't run them this high, but it was a rule of thumb that I used when I had my 2002 GT w/601 on 18 PSI....

i'm not arguing that is a bad rule, but i just wonder with the additional 12 lbs/hr per injector i'll get from the increase in fuel pressure if it'll be enough to keep the dc down.

[89FivePointOh]

E85 needs 48% more fuel flow compared to the exact same engine running on Gasoline, what duty cycle were you at before?

--Edit-----

I've seen people say that pump maxes around 875rwhp on e85 and a little more with a controller or bap.

All kroger stations have e85, it's so available that I'm planning on converting my daily eventually.

It is not 48% more fuel....it is between 30% and 35%....I had a car on E85 and that is the magic number that I had for my fuel setup...

You also have to think about the difference between summer grade and winter grade E85....you want to try and get winter grade all year around if possible....

[VaderTT]

It is not 48% more fuel....it is between 30% and 35%....I had a car on E85 and that is the magic number that I had for my fuel setup...

You also have to think about the difference between summer grade and winter grade E85....you want to try and get winter grade all year around if possible....

Majority is from e85.com

[89FivePointOh]

i'm not arguing that is a bad rule, but i just wonder with the additional 12 lbs/hr per injector i'll get from the increase in fuel pressure if it'll be enough to keep the dc down.

What PSI does the pump flow? If it can't get the fuel to the rail, then it don't matter how big your injector is....

[VaderTT]

http://www.theturboforums.com/smf/tu...ty-cool-stuff/

[dville_gt]

What PSI does the pump flow? If it can't get the fuel to the rail, then it don't matter how big your injector is....

should flow ~800lbs at 12.5v and 60psi. the 92lb injectors at 100% dc would only be moving 736lbs of fuel.

[Sam88gta1]

true, but i don't believe 10*/10lbs -> 16*/17lbs = 30rwhp.

I was tring to bait you into you telling me how much timing you had in it at 17lbs. 16* seriOusly? Lulz @ u!!

I'm starting a blog talking about tuning the factory PCM with HpTuners and wanted to use you as an example of what NOT to do. Am I going to owe you anything ?

[Baron Von Crowder]

I was tring to bait you into you telling me how much timing you had in it at 17lbs. 16* seriOusly? Lulz @ u!!

I'm starting a blog talking about tuning the factory PCM with HpTuners and wanted to use you as an example of what NOT to do. Am I going to owe you anything ?

One cast piston

[80coupe]

I was tring to bait you into you telling me how much timing you had in it at 17lbs. 16* seriOusly? Lulz @ u!!

I'm starting a blog talking about tuning the factory PCM with HpTuners and wanted to use you as an example of what NOT to do. Am I going to owe you anything ?

or a tune lol.

[fst_stng]

I was tring to bait you into you telling me how much timing you had in it at 17lbs. 16* seriOusly? Lulz @ u!!

I'm starting a blog talking about tuning the factory PCM with HpTuners and wanted to use you as an example of what NOT to do. Am I going to owe you anything ?

Wow Dude, your posts really make you sound like a fucken dick. You may be a great tuner but the attitude and cockiness you display on here is enough to drive me off as a future customer.