Higher fuel pressure and leaner mixture
Thread Starter
2nd Gear
Joined: Jul 2002
Posts: 2
Likes: 0
From: williston TN
Higher fuel pressure and leaner mixture
Has anyone tried to run a higher fuel pressure , around 55psi and tune the open loop Wot mixture leaner to take advantage of better fuel atomization? If so how can the leaner mixture be accomplished ? thru the AFR x10 open loop table or the % change to Fuel/Air ratio vs temp & rpm tables or both? 1994 LT1 have tunercat and am dangerous!
:confused: :crazy:
[Modified by RonD, 2:24 AM 8/1/2002]
:confused: :crazy:
[Modified by RonD, 2:24 AM 8/1/2002]
Melting Slicks
Joined: Apr 2001
Posts: 2,120
Likes: 223
From: Ca.
Re: Higher fuel pressure and leaner mixture (RonD)
[QUOTE]Has anyone tried to run a higher fuel pressure , around 55psi and tune the open loop Wot mixture leaner to take advantage of better fuel atomization? If so how can the leaner mixture be accomplished ? thru the AFR x10 open loop table or the % change to Fuel/Air ratio vs temp & rpm tables or both? 1994 LT1 have tunercat and am dangerous!
:confused: :crazy:
Actually wot is not "open loop", it's "power enrich mode". So don't use the open loop tables!
Just use %change to f/a vs rpm.
And yes a lot of folk turn up the fp and then retune the wot-but you'll need to retune your ve tables for part throttle also-or try just changing the fuel inj. constant first to bring it back in line.
Oh yea....welcome to the forum!!
:confused: :crazy:
Actually wot is not "open loop", it's "power enrich mode". So don't use the open loop tables!
Just use %change to f/a vs rpm.
And yes a lot of folk turn up the fp and then retune the wot-but you'll need to retune your ve tables for part throttle also-or try just changing the fuel inj. constant first to bring it back in line.
Oh yea....welcome to the forum!!
Racer
Joined: May 2001
Posts: 252
Likes: 0
From: VillaPark,IL U.S.A. IL
Re: Higher fuel pressure and leaner mixture (drive it)
There is a check valve in the fuel pump that can open up once you start getting that high in pressure. Assuming you have the stock one.
