CJM Report: Effects of E85 after 3 years?

Originally Posted by 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.

Originally Posted by 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.

Originally Posted by 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.

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Originally Posted by 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....

Originally Posted by synolimit

from what ive seen e85 always adds power on any car with a tune. it always just comes down to price though. for me (where im at parts wise), if what you say is true (no pump needed), then 1000cc ID injectors for like $700 for 10-15hp is worth it! 15hp might be a stretch but ive seen others with 10hp no problem.

the seals do worry me though. if they arent Vitron? then E85 will eat it. older cars get "the black sludge" where E eats everything!! i dont think you can tell this on a 370 though since we dont have a return fuel system. on older cars or return system cars its really easy to see as your sock will be solid black with tar, or it wont.

im getting a tune soon with the ported everything then again later with E and injectors and possibly fuel pump. like everything on a Z just sit back and wait a while haha.

PS...how hard is it to pull the lower manifold? can i leave the fuel rails attached to the car or do i have to pull it out of the way and relieve the pressure in the lines?

Originally Posted by synolimit

lol you dont own a subi do you? those guys run 100-115% IDC all the time. at least with subi the IDC isnt each injector by itself. its a % of all and i cant remember how to put it. i used to know everything with them cars but its been like 2 years really talking about them so i forget. their IDC was a good 15-20% off though. if the Z is anything like it then you might be ok for high 90's and still have plenty of head room.

Originally Posted by TopgunZ

You will not want to run 1000cc's on stock pump without boost. You will atomize like crap and will have more like a jet stream then a mist and you probably wont be able to hold an idle.

You will have to pull the rails and you will have to relieve the pressure. There is a hardline that connects the feedline to the rails that needs to be taken off. It is super easy to access though. Its right in front.



Well I have always seen that anything over 80 is just a gamble. Yes you can run them at 100%. But that is unsafe and if your pump doesn't hold a perfect voltage, which it wont, then you are just waiting for trouble. My tuner wont let me take mine over 80 and he knows his shiz.