14 psi on stock fuel with stroker

[recognizethees]

i have a 2.3 stroker,front mount,255 fuel pump, 450 cc injectors, no fuel management,evo 3 16g, and all other supporting mods. I was just wandering if it was safe to run 14 psi on my setup, becuz it hits fuel cut at 16-18 psi. i just built it so i dont wanna mess it up alrweady

 

[andymoraitis]

Put a logger on the thing and find out the right way. We can only offer a general idea of how much boost you can run on stock fuel, however since each motor is a bit different, logging is the only way to know for sure. I certainly hope you have an AFPR installed to deal with the 255.

Should be a fun street car when you get a chance to yank on the boost.

Andy

P.S. Please update your profile so we can help you more easily in the future.

 

[Spooling99]

Do you have a AFPR? if you have a 255lp pump you need a afpr. You need a logger to see if your getting knock.

*Andy your to quick

 

[andymoraitis]

Andy your to quick

Sorry Adam. I'm trying to slow down. Really!

 

[recognizethees]

i dont have a regulator didnt know i needed to get 1, i was gonna get dsm link here shortly so i didnt want 2 waste the money if i was gonna get dsmlink

 

[eclipse_20g]

Regardless of the link, you're gonna need the AFPR. But I'd definitely back boost down a couple psi from where you are hitting fuel cut.

 

[andymoraitis]

Exactly. There's a difference between regulating volume to the fuel rail (AFPR) and compensating for larger injectors (DSM Link). At this point, I'd look into a quality AFPR from:

http://www.importevolution.com/product_info.php?cPath=24_45&products_id=1620

Install is pretty easy and even the pushlock kit is a great value. Don't forget to change the internal spring (it says this in the instructions) and get a liquid filled gauge so you can adjust pressure accordingly. FYI, with the vacuum line off, you should be reading 43 psi (for a 2G) or 37 psi (for a 1G).

 

[Ludachris]

i dont have a regulator didnt know i needed to get 1, i was gonna get dsm link here shortly so i didnt want 2 waste the money if i was gonna get dsmlink

Turn your boost down to stock levels.

Maybe you mean you're saving for a DSMlink so don't want to waste money on a Logger? The A-FPR will still be needed regardless because you have a 255lph pump. If you can't afford DSMlink now, buy a logger and sell it later. There is absolutely no excuse to run your car without logging it. We can't help you unless you give us some logs. You're asking us to make guesses when you can quickly figure it out on your own if you just log it.

I don't know why you'd put the EVO3 on without putting some larger injectors in with it. If you didn't have the cash, you should have held off on installing the turbo. You're likely going to run out of fuel at anything over stock boost levels, which means the car won't be very fun to drive. Don't attempt to go fast until you get a logger and some injectors. You need to get some logs before you blow something up.

I just added some verbage to the Tech Guide for 255lph fuel pumps upgrades:
http://www.dsmtuners.com/sub.php?page=1gtstage1power
It now mentions how an afpr is needed for a 255lph fuel pump.

 

[92awddsm]

Exactly. There's a difference between regulating volume to the fuel rail (AFPR) and compensating for larger injectors (DSM Link). At this point, I'd look into a quality AFPR from:

http://www.importevolution.com/product_info.php?cPath=24_45&products_id=1620

Install is pretty easy and even the pushlock kit is a great value. Don't forget to change the internal spring (it says this in the instructions) and get a liquid filled gauge so you can adjust pressure accordingly. FYI, with the vacuum line off, you should be reading 43 psi.

I use this same regulator and it works great for the $. And as andy stated, you must install the extra spring that comes with the regulator because it has the low pressure spring installed from the factory. But on a side note, andy is getting old and set in his 2g ways so dont pay attention to the fp setting that he recommended. The 1g pressure is supposed to be set at 37, not the 43 that was stated.

 

[92awddsm]

I don't know why you'd put the EVO3 on without putting some larger injectors in with it. If you didn't have the cash, you should have held off on installing the turbo.

My question is why skimp on fuel when you not only have an evoIII, you also installed a 2.3. This is the perfect example of modding ass backwards.

 

[andymoraitis]

The 1g pressure is supposed to be set at 37, not the 43 that was stated.

Keith bails me out again. Thanks pal. Better go adjust my reading glasses!

 

[recognizethees]

i was gonna go the the aem ems but i spent alot of money that i wasnt supposed to and as a result of that i bought the 750's but couldnt get the aem.the guy that built my car didnt tell me it was a bad idea to put the fuel pump on with no afpr so i never even thought about it until i started asking ppl whats the best way 2 go with no engine management.