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Forum nameTurbo/Nitrous Tech
Topic subjectfuel tuning after rebuild...
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i8&topic_id=35888
35888, fuel tuning after rebuild...
Posted by eclipsekaiser, Dec-12-02 02:42 PM
I finally get my car back tomorrow. After a 3 week down time...yippie.

My question is this, tonight I drove the car after the rebuild. I had the 30# ijectors placed in.

I get plenty of fuel at crusiing speed. just at idle it stutters and the dies. CEL indicate too rich of upstream O2.

What shoudl my idle and static be at with these 30# injectors?
Some tips and directions on tuning please...
Compression is a perfect 200 across. car definitely feels smoother with rebuilt head...:P
35889, RE: fuel tuning after rebuild...
Posted by pn0ymahal, Dec-12-02 03:25 PM
just remember what i just told you in the im we were talking about.. gotta turn down idle/static
give me the key ill tune it for you hehe


Michael 99gs
HRC Stage 2
Stage 3 process begins gathering parts for rebuild

http://www.dreamwater.net/purplebeast
35890, RE: fuel tuning after rebuild...
Posted by jcurcillo, Dec-13-02 12:23 AM
I used to run my idle pressure at 30psi with 30# injectores and a S-FMU.
35891, RE: fuel tuning after rebuild...
Posted by jamesman, Dec-13-02 02:19 AM
kaiser,
IM me when you get online
i would think you should run the same 8:1 disk or a 6:1 something like that. idle should be like 30 or 35 psi. check your fuel trims. your car will die at idle the first few times because the ecu has not had time to rebuild the new fuel curves. just drive it around a bit and it will be okay.
lates
james
35892, RE: fuel tuning after rebuild...
Posted by pn0ymahal, Dec-13-02 06:47 AM
james, i told him to set it at idle at 30psi for now and use the 6:1 disk for now.. thats how i am and its fine.. he said, he set it at 38psi and it would still dies. well okie


Michael 99gs
HRC Stage 2
Stage 3 process begins gathering parts for rebuild

http://www.dreamwater.net/purplebeast
35893, RE: fuel tuning after rebuild...
Posted by XtremeRS, Dec-13-02 09:06 AM
Not sure if you have the SFMU, or the FMU, but on my SFMU and 30lb injects, i use the 2.72" disk with short, dark spring, and i idle around 25 psi. This gave good fuel trim numbers, and cars runs and boosts great. Anything over 25 psi, i got a too rich CEL also.
35894, RE: fuel tuning after rebuild...
Posted by Semperboost, Dec-13-02 02:32 PM
So can you run 30lb injectors on a FMU or do you NEED a SFMU or SAFC?
Alvin

96 RST

Star Stage I turbo kit /Starion I/C w/ 2" chrome piping / GReddy Type-S BOV / Missing Link / Custom APEXi- GReddy 2.5" exhaust / 55mm ARD TB/ Nology wires / APEXi EL mech boost gauge / Autometer A/F gauge / Southland Dual Friction clutch / B&M short shifter / Energy Suspension shifter bushings / 16" GSX Rims / Front/ Rear camberkits / Eibach Prokits / Tokico Blues/ Front Upper, Rear Lower strut bars / Rear GST sway bar/ GSX Dual Piston Calipers, X-drilled/ slotted rotors