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> Lower my fuel pressure to help w/fuel injectors.., ...being too large???
Mueller
post Jun 12 2005, 08:54 PM
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Running 2.0 injectors on my stock 1.8, new fuel injection fires all 4 at one time (batch), I have a feeling new injectors are too much....anyone lower their fuel pressure to compensate for large injectors??

I'm wondering how low can I go yet still retain a nice reliable pattern?????
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airsix
post Jun 14 2005, 11:53 AM
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QUOTE (Dave_Darling @ Jun 14 2005, 09:00 AM)
Mike, I recall reading on the Rennlist a year or so ago that you can probably drop the fuel pressure by up to 5 PSI and still have a half-decent spray pattern.

For what that's worth.

--DD

That's what I was talking about earlier. When I put a boost-port on my fuel pressure regulator the result was linear pressure increase equal to boost pressure, but at idle the vacuum pulls the pressure down about 5 psi. from where it runs when vacuum is low or neutral. Tuning the PEFI for the fuel-pressure change was very easy and only took a minute or two since only idle mixuture was affected.

-Ben M.
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Posts in this topic
Mueller   Lower my fuel pressure to help w/fuel injectors..   Jun 12 2005, 08:54 PM
TimT   if I remember Link 1 you can fire injectors 180 ap...   Jun 12 2005, 09:10 PM
TimT   Also keep your fuel pressure constant... thsi e...   Jun 12 2005, 09:11 PM
snflupigus   is there a removable programable chip in these ecm...   Jun 13 2005, 01:05 AM
0396   Running 2.0 injectors on my stock 1.8, Interestin...   Jun 13 2005, 07:35 AM
DNHunt   Mike I know you can lower them a little but, I se...   Jun 13 2005, 07:47 AM
airsix   Mike, What pressure are you running? Have you modi...   Jun 13 2005, 08:55 AM
Mark Henry   I'm running 2.0 injectors on my stock 1.8 righ...   Jun 13 2005, 09:00 AM
Mueller     Jun 13 2005, 12:01 PM
lapuwali   You have to be careful on open/close times. The n...   Jun 13 2005, 12:32 PM
snflupigus   GM tbi injectors often go "static" - meaning they ...   Jun 13 2005, 06:22 PM
airsix   ...   Jun 14 2005, 10:45 AM
Dave_Darling   Mike, I recall reading on the Rennlist a year or s...   Jun 14 2005, 11:00 AM
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