Well, needless to say.. 5psi+Vortech FMU+stock inj/pump+HKS SuperAFR+eagle rods/wiseco 8.5:1 = Really frigging high EGT's. I just finished installing this DynoTune digital EGT... had to get the bung brazed on... seems to be holding pretty well. When I got on it this afternoon to establish some kind of a baseline... total rude awakening!!

Now... I have a 4:1 disk/plate for the FMU, and I have some Venom 550's which probably need professional cleaning/flow testing. No fuel pump, or the spare money to buy one.

I started off in the right direction this afternoon by replacing my BKR6E-11's with my last set of BKR7E's. (A shop had advised me that I should go back to stock heat range, so I got the 6's..but I think the gap is wayyyy too large..)

Now... would it be worthwhile, safe, "okay" to install either the FMU disk/plate, or the 550's before I have a fuel pump, or cash for tuning on a dyno? I'd like to do anything I can to help the motor out!!

One thing to consider, I installed the probe on cylinder 4, the tip is probably 3/4" away from the middle of runner.

Oh... the other/longer term option is to continue with this 8injector project... but I still need regulator, hoses/lines, few other odds and ends. (and I'll still need a pump)

FS: 2.5" Test Pipe 25 shipped

you are def going lean with a stock pump and 4:1 disk. Get a new pump its only 100. and try either 8:1 or 12:1 with the stock injectors. If you go 550cc you may have a hard time getting it to idle good. 450's are tough as it is.

Get the pump for now and change out your 4:1 disk. do the 8 injector setup in the future or go MS

Terry
96 Eagle Talon ESI....Daily driver

97 Eclipse.........

yeah 4:1 disk isnt actually in yet... its sitting on my shelf. I assume whats there now= whatever came with the Star kit. (previous owner installed the kit)

Would there be ANY benefit to throwing the disk in now?

FS: 2.5" Test Pipe 25 shipped

no the one thats in there now is the 12:1. I have the star kit and at 5psi my EGT's are fine but i have the walbro 255 which should have come with your kit.
96 Eagle Talon ESI....Daily driver

97 Eclipse.........

Yeah I think this shop I used to go to must've ripped me off. They said the fuel pump sounded "loud" so they swapped in a stock one



Of course I had no clue... didnt know any better etc etc.

But yeah I definitely just need to get a fuel pump... Thanks!!

FS: 2.5" Test Pipe 25 shipped

isn't 12:1 on a 5 psi application a bit on the rich side...

I am running my SFMU 6:1 ratio (3.??" disk) and have a EGT signature of 14-1500 at WOT (depending on weather)with my RC 270CC on 5psi (more like 4psi with internals)

4:1 seems a little lean with stockers, and no external pump to assist with the high pressure.

Better shell out the $$$ if you wanna play.

-K-

do it right or dont do it at all..... you're playing with danger by not running an aftermarket fuel pump. Get it.

MODS:

HRC 16g turbo kit, Spearco custom FMIC, Custom IC piping, VT rebuilt engine: Custom 8.8:1 compression CP pistons, Eagle connecting rods, Melling oil pump, Clevite bearings, 370cc injectors, Vortech S-FMU, Apexi N-1 catback exhaust, AFX UDP, Autometer boost gauge, fuel pressure gauge, EGT gauge, Corbin's digital A/F gauge, Tokico Blue shocks, Tein springs (1.5" drop), 18" Konig Verdicts rims, VIS stock-style Carbon fiber hood

Get a F*cking fuel pump!!!!!!

the largest disk (3.xx) is a 12:1

Terry

96 Eagle Talon ESI....Daily driver

97 Eclipse.........

I think im gonna get a weaker spring for my Deltagate... boost is the problem...! EBC doesnt help me at all obviously

or maybe RMA the current one so I dont have to risk breaking the seal

FS: 2.5" Test Pipe 25 shipped

if you want to dial down the boost just adjust the deltagate. You dont need another spring. 5psi spring is what comes in it from the factory, or have you changed it?

Terry

96 Eagle Talon ESI....Daily driver

97 Eclipse.........