weird problem... - SRT Forums

mistabones · 06-22-2008, 02:28 PM

Ok i recently got some 650s for my car that were used and now when i pull fuel it dose noting it seems. i pulled 30% and when i got WOT the a/f stays at 10.0.....

then for the heck of it for one WOT pull i went on ahead and pulled 50%!!! and it went from 10.0 to 10.3!!! wtf.......can anyone help me out??

could it be that they are not 650s but 750s?? the guy said they were 650...

here are my mods
Stage 0 PCM
stage 3 turbo all ported from F&F
ported intake manifold, TB, TB spacer from fullybuilt
650cc injectors
bomba fuel rail
255 fuel pump
injen SR
SAFC 2
AEM wideband
AGP stage 3 WGA

mistabones · 06-22-2008, 03:58 PM

btw now im pulling 21% but its still pig rich...

Black Beast · 06-22-2008, 04:34 PM

are they high or low impedince? RCs? whats your fuel pressure at, and are you on a static or rising rate fuel pressure?

mistabones · 07-08-2008, 09:40 PM

Im not sure what they are i just know they are DW 650cc direct fit. and dont know the fuel pressure. my car idles lean 15.0 -15.9 and at WOT no matter how much fuel i pull it just runs super rich it seems..... i already checked all of my SAFC wires everything is correct........ i dont know what is going on. anyone have a clue?

Chris_36608 · 07-08-2008, 09:43 PM

Not enough boost, maybe? How much are you running?

- Chris

mistabones · 07-09-2008, 12:44 AM

im running 20 to 23 psi

mistabones · 07-09-2008, 11:18 AM

anyone? got any idea whats going on.... could i have some sort of vacume leak that could cause this? i just replaced my o2 sensors also and it fixed nothing. installed my fuel pump wrong... could it be the bomba fuel rail? electrical problem causing this...?

Chris_36608 · 07-09-2008, 09:00 PM

You can check the serial number on the injectors and go to the dw site to see if they are 650's, or if they are bigger. I use the 650s on my setup on 20 psi on the stocker, and I only pull 31% at low throttle and like 15-22% at wot. I have a stock fuel pump and rail, though. Good luck, and sorry I couldn't help. Bump for an answer.

- Chris

mistabones · 07-09-2008, 09:23 PM

im pretty sure they are 650's....its just so strange....i dont understand it... bump for answers

mistabones · 07-10-2008, 04:58 PM

bump for any type of ideas or help! i been searching and nothing.

sour kraut · 07-10-2008, 07:15 PM

Is your fuel pressure static or rising rate? You never answered this. Check on the website to make sure they are 650's.

mistabones · 07-10-2008, 11:36 PM

Quote: Originally Posted by sour kraut

Is your fuel pressure static or rising rate? You never answered this. Check on the website to make sure they are 650's.

yea i answered it im not sure bro.. and yes i checked and they are 650cc. but i talked to Steve from SNL and he helped me out alot. im gonna turn the boost up to 24-25 psi and see how it runs. and my safc could be taking a crap on me.. its a used one and was alittle beat up when i got it.. so if anything i might need to be purchasing a new one. so if anyone has on pm me i might purchase it!