Help with dasc fuel pressure

[krovax]

Right was reading through old threads and i came across one where dustenT said the fuel pressure needs to be 85-90 psi check mine today and its 75-80 psi and when i try to adjust the FPR it stays the same unless i undo it loads be then the pressure gos down and if i screw it down loads then the pressure go nuts so im stuck on what to do my engine has the one on end of fuel rail aswell

is my FPR that i got with my dasc on its way out ? or is that pressure going to be ok ?

really wanna know dont wanna do any damage to any thing would be really greatfull for any help

[DustenT]

Originally Posted by krovax

Right was reading through old threads and i came across one where dustenT said the fuel pressure needs to be 85-90 psi check mine today and its 75-80 psi and when i try to adjust the FPR it stays the same unless i undo it loads be then the pressure gos down and if i screw it down loads then the pressure go nuts so im stuck on what to do my engine has the one on end of fuel rail aswell

is my FPR that i got with my dasc on its way out ? or is that pressure going to be ok ?

really wanna know dont wanna do any damage to any thing would be really greatfull for any help

75 to 89 is fine. I'm running 85-90 because I'm running more boost and I don't mind if it's a tad rich, since the ECU will compensate anyways.

[krovax]

ok but when i try to adjust the FPR nothing happens stays the same what way is ment to up the boost ? clockwise or anti clockwise ?

[DustenT]

Originally Posted by krovax

ok but when i try to adjust the FPR nothing happens stays the same what way is ment to up the boost ? clockwise or anti clockwise ?

Clockwise to increase pressure. Pressure will only rise under pressure, not at idle under vacuum.

[marko]

you can adjust fuel pressure?? nice... how do you know when you turned it up enough & can the stock injectors handle this?? also, is this 'adjustable' FPR a part of a regular DASC kit??

Originally Posted by DustenT

Clockwise to increase pressure. Pressure will only rise under pressure, not at idle under vacuum.

[krovax]

yup the FPR is part of the dasc kit

[marko]

Ok.. so yank it clockwise to the max and hope for the best or is there a measure to which to adhere to? also, doesnt this eliminate the need for the TT Nick G Stage 1/2/3 stuff??

Originally Posted by krovax

yup the FPR is part of the dasc kit

[DustenT]

Originally Posted by marko

Ok.. so yank it clockwise to the max and hope for the best or is there a measure to which to adhere to? also, doesnt this eliminate the need for the TT Nick G Stage 1/2/3 stuff??

Do you have a fuel pressure gauge?

I did 2 full turns to the right for a gain of ~10psi fuel pressure. It's iffy without a wideband O2, which I semi-tuned with. DO THIS AT YOUR OWN RISK! Don't expect you fuel pump to last long if you bump past 85psi regularly.

[marko]

hmm... Ok, got it & no, I do not have a gauge.
I'll do 1 turn clockwise & see where that takes me.. I'm guessing I must be running lean(er) to begin with, since I got the dasc.

queston: I'm getting the stage 2 thing from TT very soon... is playing with the FPR gonna affect the new software or not?

Originally Posted by DustenT

Do you have a fuel pressure gauge?

I did 2 full turns to the right for a gain of ~10psi fuel pressure. It's iffy without a wideband O2, which I semi-tuned with. DO THIS AT YOUR OWN RISK! Don't expect you fuel pump to last long if you bump past 85psi regularly.

[DustenT]

Originally Posted by marko

hmm... Ok, got it & no, I do not have a gauge.
I'll do 1 turn clockwise & see where that takes me.. I'm guessing I must be running lean(er) to begin with, since I got the dasc.

queston: I'm getting the stage 2 thing from TT very soon... is playing with the FPR gonna affect the new software or not?

Stage 2 replaces the pressure regulator.

[marko]

ohh, I thought it was only that DISA valve that goes... guess I should read the description better. LOL
anyway, thats perfect.. I can tool with the FPR till I get the Stage 2. Nice... thx.

Originally Posted by DustenT

Stage 2 replaces the pressure regulator.

[krovax]

well after hours of playing around today i think my FPR is dieing i set up a fuel pressure gauge to sit on my window wiper so i could see what im running while driving at boost and its only hitting 65-70psi no matter how i adjust it doesnt go any higher only gos lower

so im gonna have to buy another one now

[krovax]

Ive now removed the stock regulator on the end of the fuel rail and have an adaptor so the fuel runs out of the end of the fuel rail straight to the FPR im running 3.5 bar atm is that ok or should i be running more or less now i have removed the stock regulator ?

[marko]

took my car a shop to have someone figure out why was it cutting out from time to time... & it seems the mass air flow sensor was gone... according to the shop, it was sending a false message to the cpu that there was no air flow - so in return the cpu was shutting down fuel delivery... true enough, $389 later (for the part only), car again runs like a dream! also, regarding FPR, the shop also told me that the car was/is running a bit on the rich side so no need to mess with the fuel pressure (and increase it) as I was gonna do.

however, I still have a problem with 'a throttle actuator' which isn't working anymore (does not go through the test sequence immediatelly after you start the car), which in return is messing up my ASC.