CJM Report: Effects of E85 after 3 years?

Chuck33079

Does E85 require significantly higher pressure? I thought it was just a volume difference from pump gas and you'd be fine with a 340lph pump and bigger injectors for NA.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

megalapagas

Ok then so pump, injectors wise 600cc is about right or too much or is there specific injectprs/fuel I pump I need?? Also once changed its only Strictly E85 or can I pour Premium Gas too?

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jwick

E85 or nothing. There is no current flexfuel option

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'10 G37T 6MT Graphite/Graphite - BP - G37T Build

Chuck33079

Since you're planning a nitrous build I'd go larger on injector, but I'll defer on specifics to someone with more E85 knowledge. Going back and forth between E85 and pump gas is supposed to be a pain in the *** since you don't want to dilute the E85 down with leftover 93. I'd think really hard about this for a NA car. If you only gain 10-15whp but you have to pay for a re-tune along with a new pump and injectors, is it even worth it? Sure, E85 is cheaper, but mileage drops significantly so you're not really saving any money.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

megalapagas

Good Point, its a No Brainer.

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GTM 34 Row Oil Cooler | K&N Drop Ins w/ Z1's Post MAF Tubes | F.I Non-Res'd 2.5" T.P w/ CF CBE | Axis Wheels | Piecing together My Own Custom T4 Top Mount Single Turbo Kit *Still in the works* |

TopgunZ

Any NA car is going to be fine with a walbro 255 and 600's. I am running 533whp on a 340 and 1000cc injectors.

However

Walbro 255 = $75
Install kit = $75
600cc's = $500
Uprev = $500
Tune= $500

$1650 for 10 HP?

Not to mention you will be glued to certain stations and you can never take a decent road trip unless E85 is everywhere in the area which in most cases isn't.

The only way I can see this making sense is if you are running without cats and the smell is bothering you. But it had better bother the **** out of you for that cost.

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jofro6

Well I already have the software so it would just be a retune cost and parts. I do run test pipes, but I dont notice the smell at all nor do I take my car on long road trips lol. Are the stock injectors maxed that close to 100% at this point to need the 600cc? Not looking to cut corners just curious.
Could be something I look into now.

Sent from the Galaxy, using Tapatalk

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2012 Red 6Spd Touring/Nav.. FI CF NonRes CBE and Res TP #682 Fly1 RS1 CF Fenders

TopgunZ

Well if you have already been tuned and your tuner is cool he can check your map and see what duty cycle they are at. But I highly doubt they will be good to run E85 on. Besides, you wouldn't ever want to take your injectors to max. 80% is the max you should ever go.

If you ever tune again ask for all that information. Duty cycle, timing adv., afr's, etc....

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