Good to know thanks for the info. I have a new fuel filter on my way so I guess I will mod my fuel pump as well when I put it on. It seems really straightforward. I guess the only thing I need to be careful of is to not push it in too far.

Thanks for your assistance. As I said Im not looking to make monster power here so I think my little 1000cc (950 actually) will be fine for my needs.

 

np at all. yes modding is very easy.

 

Im looking to make around 600whp on 91 oct. pump gas in a fully built 2.4 swapped into a fwd lancer.

my 4g64 set up consists of manley 9:1 pistons in combination with 2001 kia optima dohc head which actually drops my compression -1:1 so theoretically my c/r is somewhere around 8:1.
BC springs and ti retainers.
3 angle
GSC s3's
arp main & head studs
magnus v5 Intake mani
fic fuel rail
sheepey built twinscroll t4 bottom mount
precision ball bearing 6266SP turbo
twin 40mm turbosmart wastegates

I have 3 questions for you...

first of all I would like to know what size injectors would put me around 600whp at around an 80% idc?

second, I would like to know what size fuel pump can get me to 600whp on 91 pump gas with those injectors. I have a wally 255 off my old build. can it be modded to hit 600whp or will I need to get a double pumper or aeromotive 340?

and last is a question about fuel injector impeedance. The fwd 2.0 sohc lancers come with high impeedance injectors where as the evo's come with low impeedance injectors. On my boosted 4g94 setup I just ran subi 440cc high impeedance injectors which were direct plug and play and tuned through ecu flash. should I stick with high impeedance injectors or should I change to low impeedance injectors? what are pro's and con's of each?

 

600whp on 91 oct huh.... That's not really possible without additives such as methanol... Even with methanol I doubt you'll be seeing something close to that on a Dynojet.

FIC 2150s or ID 2200 are the way to go.

A single walbro is nowhere enough for that power, you'll need a double pumper and I don't know if evo fuel pump housings are the same as lancer ones, but if they are, then you'll need one.

 

Lancer housing is the same aside from the h pipe and fitting from other side of tank due to not being a saddle tank.

But yea..600 on 91 goin be an extremely tall order.

 

so then a double pumper for an evo should fit? and I know its a tall order. ultimately I will be happy somewhere between 500-550hp. still not sure if even thats possible on pump gas. unfortunately there isn't a e85 station within 100 miles of me.

Im not opposed to race fuel just was looking for something more readily available. what octane would you guys recommend i run?

 

VP C16 (117 oct?).

 

anybody know anything regarding info on what impedance to use? high or low?

 

You're better off with high impedance. They're easier to tune from what I've seen / read.

 

My setup is

BR 2.3 with BR ported head with 272 cams
MAP V band 6766 BB T kit
ETS 3.5'' intercooler
BR Ported IM AND TB
BR Fuel Rail
BR Double Pump using stock fuel lines
FIC 1450 bluemax
Excedy triple clutch
AEM ems ecu

Is the fueling system enough for 850whp on dynoet on C16 ? I have no plan to use E85 because of availability issues. Does C16 and Q16 also need bigger injectors like the E85?
Help me decide tscompusa .

 

Hello

You asked for size of injector for 600HP on pump gas .I calculate you ned 1280cc @ 80% duty cycle with 43.5 psi fuel pressure. We have these in Low Impedance Lucas and also in High Impedance Bosch fuel injectors . If i can help in any way please PM me and i will do my best to help
Thanks Frank

 

2003 Evo 8
Mods:
Jdm 20g turbo
Ets upper and lower i/c piping
Turbosmart boost controller
Full turbo back perrin exhaust
O2 dump
Ets intake
walbro 255
arp headstuds
93oct/dynojet

Future:
Cams
Springs and retainers
Exhaust manifold
Ets 3in intercooler
Fic 950cc
Suggestions?
What should i port?

Goal is around 450hp

 

C16 is like 93 in regards to IDC, so its nothing like Ethanol in 85% form which consumes 30% more fuel. I don't know if 1450cc will be enough injector for a C16 car at 850WHP with safe IDC. in all honesty for that fuel id probably run a 1650cc FIC (new design) which cost a fortune, but its a great injector since it is designed for any fuel and will not swell up, etc.

950cc with a modded walbro 255 is plenty enough for your goal safely. you will have plenty of fuel! The pump will max out before the injectors.

 

Tom I have a friend with 1450cc FIC's in his car making 540awhp on a mustang dyno with the idc's over 110% running E85 and the tuner says his injectors are maxed out and he needs to go bigger.

This doesn't sit right with me, I think his fuel system is done wrong and he is out of pump. He has one walbro 400lph in tank and a bosch 044 inline by the tank, uses all oem fuel line till it gets to the bosch 044, then goes to -6 from there to the rail.

I told him I want to redo the fuel system like mine and run a double pumper with wally 450's and -8 to the rail with a -6 return and those FIC 1450 injectors should get him over 600 mustang dyno easy.

What do you think?

 

bump