What Fuel Pressure do u recommend?
Thread Starter
Race Director
Joined: May 2003
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What Fuel Pressure do u recommend?
Going to the Drags tonight, I recently installed an AFPR, My stock reading was 46 PSI, and I bumped it up to 48PSI.
Curious if any L-98's out there with exhaust mods like what I have, and what FP has been a success with you. And Yes I was running lean on the dyno, This is why I got an AFPR.
Curious if any L-98's out there with exhaust mods like what I have, and what FP has been a success with you. And Yes I was running lean on the dyno, This is why I got an AFPR.
Safety Car
Joined: Oct 2001
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From: Connectivette
That's probably a good place to start. However I thought our stock '88 settings where closer to 43.
It's gonna be a trial and error thing for ya. Start with 48, bump it up (or down) and look at your time slips. You can even check your plugs.
My last time at the track, with my mods, I was at about 47/48 but found my plugs to be showing a lean condition. I have since bumped it up to about 50 psi.(with no new track data/results.)
It's gonna be a trial and error thing for ya. Start with 48, bump it up (or down) and look at your time slips. You can even check your plugs.
My last time at the track, with my mods, I was at about 47/48 but found my plugs to be showing a lean condition. I have since bumped it up to about 50 psi.(with no new track data/results.)
Team Owner
Joined: Mar 2000
Posts: 83,383
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From: Boston, MA
Every car is different and the weather plays a huge impact on it. Do a few passes bumping it up by 2 psi each pass. If you see your MPH go down then drop it 1 psi. Without a scantool on the car it's hard to play with.
Safety Car
Joined: Oct 2001
Posts: 4,763
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From: Connectivette
Originally Posted by 65Z01
Wow Chuck, I remember the days when your C4 was slower than mine, nice numbers there. 
What mods do you now have?
What mods do you now have?
I haven't done any performance mods in a while. In fact I'm out of bolt-ons. The heads/Cam package is next.
I've been doing some work to the interior lately. Seat foam and covers and on the hunt for some plastic interior pieces.
Thread Starter
Race Director
Joined: May 2003
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Originally Posted by scorp508
Every car is different and the weather plays a huge impact on it. Do a few passes bumping it up by 2 psi each pass. If you see your MPH go down then drop it 1 psi. Without a scantool on the car it's hard to play with.
yah sounds good, i didnt get around to doing the short throw, or cutbacks. oh well! next time.
last time at the track my best was a 13.78@101 with a 1.99 60 foot.
since then i will be taking out the spare, i added an afpr/hypertch cap/coil/rotor and new moroso wires.
so time will tell, my goal is 13.70.
Last edited by 88BlackZ-51; Jun 10, 2005 at 02:04 PM.
