USAF_S2K

my power goal is 450-550. Currently have FIC 900's (flow like 1000cc) and a DW 300lph pump sitting around. I like the idea of having cooler combustion temps so id like to run either or. Ive read people running E85 on 1000cc inj and 300lph pump. Seems like the norm is a aero340 and 1600's. I have no plan on upgraded fuel lines and at the most i would run an AEM regulator. Curious to see some input on the best idea for my power goals. Thanks gurus

JoeyBalls

I am a huge fan of Water/Meth, but given the two options, E85 is the clear winner. Makes more power and is failproof (unless they F- up the blend which I don't think would ever happen).

wdtd

If I remember correctly, if you have equal amounts of gasoline vs. e85, the gas has more energy, so at equal feed rates, gas is introducing more energy into the system. How efficiently that energy can be used is another matter.

So more e85 is used, compared to gas, if equal energy is introduced. If e85 has a burn rate similar to 105 octane gas, then a custom tune can use that energy more efficiently than 93 octane gas?

Could one add water/meth injection to 93 octane gas at a measured rate such that the burn rate is equivalent to e85 and thus could be tuned for equivalent power?

Leviisbigred

i have always seen s2ks and EVOs make more power on E85 vs 93+meth. i have 4 friends that have EVO x's ,one stock,one few mods,my best friend 93+meth and my other one 650+ on E85 and 550 on 93. E85 gives about 50+(more or less) more then 93+meth .. only thing holding my best friend back is E85 gas stations, not many here.. how is where you live? ( to the OP)

USAF_S2K

i dont have a lot of e85 gas stations but ones all you need. Curious if i can make the power off my current setup (which i doubt) or if i need to keep the pump i have and just get 1600s or new injectors and pump.

miguel329

i wanted to go e85 but depending where you are few gas stations. so if you go on long drive you need map out e85 stations or have a 93 oct map as backup. but you should be able to do 450 with pump gas no problem.

USAF_S2K

if running e85 i think hitting over 500 would be alot easier than trying it with pump gas, like i said i like the idea of cooler comb temps. I woldnt be taking any trips with it i dont imagine. Dont like the idea of a car that modded cruisin around far away from my toolbox.

Vi3tBoy

Easy. E85 (assuming you can get it in your area)

I am on a stock fuel system. Just 1000cc injectors, 340 pump.

Made over 500 easy at Full Blown Motors. LJ says we couldve even turned it up but I felt that it was perfect for the street so we didn't push any higher.

sohc_mshue

FYI i had issues trying to run near 500whp with both a full blown 340 and a walbro 400 intank pump using stock lines with ID1000 injectors. My fuel pressure logs showed it dropping off hard in high rpms. I now have ID2000 and was able to lower my base pressure. I am at 515whp and still have some fuel pressure drop (5-6psi lower than it should be at redline). I have inspected everything and have no flow issues in the feed line and also replaced the factory banjo bolt feed with a straight fitting to the side of my fuel rail. I believe the lines are what is causing my problems with fuel pressure dropping. I will likely upgrade the lines and switch to dual intank pumps before I go for more power.

With my dad's AP2 we maxed the fuel system out at around 600whp on e85 running Siemens 900cc injectors at a 100psi base pressure running upgraded lines, an intank walbro 255, and an inline bosch pump.

USAF_S2K

thats my worry, seems like some people have no issues running stock lines. I know the fuel pressure is the main issue. I would like to avoid spending tons of money upgrading my fuel sytem. It already cost a ton just to get everything to be boosted. Guess you gotta pay the cost to be the boss...lol. Good meth kits are around 700 so crunching the numbers vs the full blown twin setup and lines and injectors and all the jazz has me wondering whats the best route.