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3.5L TT but wrong body
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Discussion Starter · #1 ·
Since it requires 20% more fuel compared to regular gas, could I just throw 20% bigger injectors in and call it a day?
 

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dont thinks so, i have 600cc injectors right now i think and when i go E85 i think they're gonna be 1000cc's not sure so i will have to ask Kenny.
 

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Use the F'n Search Button
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I believe there is a kit you need to buy. It replaces several components to allow the extra fuel flow. I don't think the kits are that expensive either.
 

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Back to Stock!!
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dont thinks so, i have 600cc injectors right now i think and when i go E85 i think they're gonna be 1000cc's not sure so i will have to ask Kenny.
actually, the other way around. when you go e85, they're considered smaller

my 1000cc injectors on e85 are the equivalent of running close to 850cc injectors on gas.


EDIT:

unless you mean you'll change to 1000cc injectors, but that requires a complete retune or global scaling.
 

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3.5L TT but wrong body
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12,003 Posts
Discussion Starter · #8 · (Edited)
now I r cornfuzed :) so best bet would be to ditch the 750s I ordered and get some 1000cc? Im only planning on about 330-350whp for this year. 750s should be good to about 400whp on gas, so I figured around 330-340 on e85?
 

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now I r cornfuzed :) so best bet would be to ditch the 750s I ordered and get some 1000cc? Im only planning on about 330-350whp for this year. 750s should be good to about 400whp on gas, so I figured around 330-340 on e85?
the 750s might be borderline. if you plan on auto-crossing with that power, I'd go 850
 

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3.5L TT but wrong body
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12,003 Posts
Discussion Starter · #10 ·
^thx. Ill see how far the 750s take me. Should be ordering the elite evo kit next week.
 

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FUNCTION OVER FORM
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From everything I've read, I would shoot for 1000cc injectors. If I ever switch, that's what I will be running. Besides an injector a little bigger than necessary is way better than an injector a little less than needed & it gives you room to move up if you change your mind w/o having to come off of the cash to purchase injectors once again.
 

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From everything I've read, I would shoot for 1000cc injectors. If I ever switch, that's what I will be running. Besides an injector a little bigger than necessary is way better than an injector a little less than needed & it gives you room to move up if you change your mind w/o having to come off of the cash to purchase injectors once again.
^^that was my exact line of thought when I got my 1000s. Only spend on injectors once till the #400 mark cause, after that, it's a whole new game.
 

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From everything I've read, I would shoot for 1000cc injectors. If I ever switch, that's what I will be running. Besides an injector a little bigger than necessary is way better than an injector a little less than needed & it gives you room to move up if you change your mind w/o having to come off of the cash to purchase injectors once again.
x2
You will need anywhere from 20 to 30% more fuel to achieve stoich or lambda.The increase in the density of the charge because of the cooling affects of e85 and the fact that the ecu will advance timing up to about 98 octane (not sure if its 98 its been awhile) means even more fuel consumed, its a safe bet to go with the 1000 injectors
 

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MR TURBO 2 U
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862 Posts
what bsfc are you guys talking? fmd 4x1000cc is enough for over 1000 hp! on e85!

it seems you agree 20-30% more fuel! and this is fine on a n/a engine without engine mods to suit e85! (just fuel and ign. mods)

closer to 15-20% on dedicated engines and f/i when tuned right!

i have been achieving a bsfc of 2.3-2.6 on 98 ron add 20% thats 3 cc and add another .5 for good measure your at 3.5cc

4 x 1000cc inj. = 4000/3.5=1142 hp!!! hmmn

4 x 750cc inj. = 3000/3.5= 857 hp!!! hmmn

you choose!

save your money spend it on a good tuning package and tuner!!!
 

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what bsfc are you guys talking? fmd 4x1000cc is enough for over 1000 hp! on e85!

it seems you agree 20-30% more fuel! and this is fine on a n/a engine without engine mods to suit e85! (just fuel and ign. mods)

closer to 15-20% on dedicated engines and f/i when tuned right!

i have been achieving a bsfc of 2.3-2.6 on 98 ron add 20% thats 3 cc and add another .5 for good measure your at 3.5cc

4 x 1000cc inj. = 4000/3.5=1142 hp!!! hmmn

4 x 750cc inj. = 3000/3.5= 857 hp!!! hmmn

you choose!

save your money spend it on a good tuning package and tuner!!!
Im sure you posted these numbers as a joke to get a rise.
Unless bsfc means something different in australia and china then it does in North america, your about as far off as you can get.A generic bsfc for a turbo car is .65.
1142 hp on 4 1000 cc injectors, im now wondering if you have ever tuned a car, im not being sarcastic, really how can you say that.
 

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what bsfc are you guys talking? fmd 4x1000cc is enough for over 1000 hp! on e85!

it seems you agree 20-30% more fuel! and this is fine on a n/a engine without engine mods to suit e85! (just fuel and ign. mods)

closer to 15-20% on dedicated engines and f/i when tuned right!

i have been achieving a bsfc of 2.3-2.6 on 98 ron add 20% thats 3 cc and add another .5 for good measure your at 3.5cc

4 x 1000cc inj. = 4000/3.5=1142 hp!!! hmmn

4 x 750cc inj. = 3000/3.5= 857 hp!!! hmmn

you choose!

save your money spend it on a good tuning package and tuner!!!
It seems you got your units mixed up.

using 470 crank hp or 400whp with 15% drivetrain loss
BSFC was considered as 0.6 and 80% duty cycle

(470 hp x 0.6 BSFC*1.1)/(4 cylinders x 0.8 (80% duty cycle)) = 80.3 lb/hr

where 1.1 = root of 52/43 (fuel pressure)

80.3 * 10.5 = 840cc @ 52 psi

on E85 it's 840*1.2 or around 1012cc

These numbers are not exact but a good approximation while keeping 80% duty as an added safety since not all cars are the same
 

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MR TURBO 2 U
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862 Posts
Im sure you posted these numbers as a joke to get a rise.
Unless bsfc means something different in australia and china then it does in North america, your about as far off as you can get.A generic bsfc for a turbo car is .65.
1142 hp on 4 1000 cc injectors, im now wondering if you have ever tuned a car, im not being sarcastic, really how can you say that.
guy been doing this for a living for nearly 27 years i think i know what i said! i have won every 24hr race i have entered due to superior fuel economy and tuning FIND A GOOD TUNER!!!

@ 3.5 cc's per hp i would loose races! were not talking sprints where economy is not of real importance were talking endurance where not only you need economy but endurance too!
 

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guy been doing this for a living for nearly 27 years i think i know what i said! i have won every 24hr race i have entered due to superior fuel economy and tuning FIND A GOOD TUNER!!!

@ 3.5 cc's per hp i would loose races! were not talking sprints where economy is not of real importance were talking endurance where not only you need economy but endurance too!
Please dont talk in circles.
Would you please explain how you can achieve 1142 hp with 4 1000cc injectors.Could you also explain your bsfc numbers.
Im only asking you to explain what you have posted, nothing more.
 

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MR TURBO 2 U
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862 Posts
what bsfc are you guys talking? fmd 4x1000cc is enough for over 1000 hp! on e85!

it seems you agree 20-30% more fuel! and this is fine on a n/a engine without engine mods to suit e85! (just fuel and ign. mods)

closer to 15-20% on dedicated engines and f/i when tuned right!

i have been achieving a bsfc of 2.3-2.6 on 98 ron add 20% thats 3 cc and add another .5 for good measure your at 3.5cc

4 x 1000cc inj. = 4000/3.5=1142 hp!!! hmmn

4 x 750cc inj. = 3000/3.5= 857 hp!!! hmmn

you choose!

save your money spend it on a good tuning package and tuner!!!
Please dont talk in circles.
Would you please explain how you can achieve 1142 hp with 4 1000cc injectors.Could you also explain your bsfc numbers.
Im only asking you to explain what you have posted, nothing more.
if you bothered to read its explained "i have been achieving a bsfc of 2.3-2.6 on 98 ron" this is on evo, wrx, sr20, fj20 and many many more similar engines!
 

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if you bothered to read its explained "i have been achieving a bsfc of 2.3-2.6 on 98 ron" this is on evo, wrx, sr20, fj20 and many many more similar engines!
Read the whole thing.Please give me your calculations on how you were able to come up with those bsfc numbers.
you still did not explain how you can make 1142 hp with 4 1000cc injectors.
 
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