tuning?!?!?!

Patrick Boetticher · 06-20-2001, 11:49 AM

OK the motor is in and has about 200miles on it... im am starting the fine tuning process well i know i am ruinning low fuel pressure (about 2psi above stock) and the timing is at about 12* but the air:fuel gauge looks fine under no load but when i am driving it bounces back and forth between lean and rich all the time... what is going on.... what is the gauge supposed to be at during idil anf WOT????
thanks
se sig (NO 24lbsERS YET!!!)

------------------
ALL NEW PPG Torch Red 95GT, 304ci block, Forged pistons, Ported Explorer Intake, E-303 cam, fully ported and polished and milled E-7 heads, 75mm MAS, BBK Adj. fuel Reg & gauge, BBK Shorty Headers, BBK H-pipe, March Pulleys, 2 Chamber Flowmasters, Kenny Brown 6 point Roll cage, Kenny Brown Panhard Bar, Powerslot Rotors, PBR twin piston calipers, Eibach Sportline Springs, 180* Thermostat, 1/2 Plenum Spacer, MSD 6AL, MSD Master Blaster, MSD 8.8 Wires, 24# Racing Injectors, AFS 10.5" Cobra R's, Nit

302 LX Eric · 06-20-2001, 11:56 AM

Under WOT the gauge should read one to three notches into the green LEDs. Under normal driving the gauge will bounce back and forth between red (lean) and green (rich). It's no big deal really, it's just the gauge. A true air/fuel ratio gauge would read the outputs all the time (or very close to it) while our gauge (autometer) takes a reading then pauses, takes a reading then pauses, etc.

I think the true air/fuel gauges are a little more expensive than the autometers.

The nice thing is that under WOT you can get an idea of whether or not you are running lean/stoich/rich.

Hope this helps,
E

------------------
1991 5.0 LX Coupe - 38,000 miles

13.17 @ 106.14 mph w/ 2.138 60'

Patrick Boetticher · 06-20-2001, 01:21 PM

yeah this helps. at idel it reads all the way lean bealrly registering... at WOT it is all the way rich and it doesnt move... it bugs the heck out of me when i drive. how do i tune that.. at idel lean, at WOT all the way rich....???????????????
thx

------------------
ALL NEW PPG Torch Red 95GT, 304ci block, Forged pistons, Ported Explorer Intake, E-303 cam, fully ported and polished and milled E-7 heads, 75mm MAS, BBK Adj. fuel Reg & gauge, BBK Shorty Headers, BBK H-pipe, March Pulleys, 2 Chamber Flowmasters, Kenny Brown 6 point Roll cage, Kenny Brown Panhard Bar, Powerslot Rotors, PBR twin piston calipers, Eibach Sportline Springs, 180* Thermostat, 1/2 Plenum Spacer, MSD 6AL, MSD Master Blaster, MSD 8.8 Wires, 24# Racing Injectors, AFS 10.5" Cobra R's, Nit

withamc · 06-20-2001, 01:32 PM

Patrick - Your adjustable FPR will basically only affect WOT. If it's reading rich at WOT, turn the FPR down until it's reading just barely rich. Idle and cruising the computer adjusts according to the O2 sensor readings.

Skyman · 06-20-2001, 02:31 PM

are you coming with us this friday patrick?

Also how'd that video turn out?

Skyler

------------------
-1989 Saleen Mustang #406- TFS Heads, E-303, edelbrock intake,70MM TB, 73mm MAF, off road H, headers and 3chamber flows.
12.55@107mph
50-175 Nitrous Works WET Kit just added.

06-20-2001, 11:49 AM	#1
Patrick Boetticher Registered Member Join Date: Feb 1999 Location: Camarillo/Thousand Oaks Ca Posts: 223	tuning?!?!?! OK the motor is in and has about 200miles on it... im am starting the fine tuning process well i know i am ruinning low fuel pressure (about 2psi above stock) and the timing is at about 12* but the air:fuel gauge looks fine under no load but when i am driving it bounces back and forth between lean and rich all the time... what is going on.... what is the gauge supposed to be at during idil anf WOT???? thanks se sig (NO 24lbsERS YET!!!) ------------------ ALL NEW PPG Torch Red 95GT, 304ci block, Forged pistons, Ported Explorer Intake, E-303 cam, fully ported and polished and milled E-7 heads, 75mm MAS, BBK Adj. fuel Reg & gauge, BBK Shorty Headers, BBK H-pipe, March Pulleys, 2 Chamber Flowmasters, Kenny Brown 6 point Roll cage, Kenny Brown Panhard Bar, Powerslot Rotors, PBR twin piston calipers, Eibach Sportline Springs, 180* Thermostat, 1/2 Plenum Spacer, MSD 6AL, MSD Master Blaster, MSD 8.8 Wires, 24# Racing Injectors, AFS 10.5" Cobra R's, Nit

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06-20-2001, 11:56 AM	#2
302 LX Eric or '331 LX Eric' Join Date: Jan 1999 Location: Columbus, Ohio Posts: 2,142	Under WOT the gauge should read one to three notches into the green LEDs. Under normal driving the gauge will bounce back and forth between red (lean) and green (rich). It's no big deal really, it's just the gauge. A true air/fuel ratio gauge would read the outputs all the time (or very close to it) while our gauge (autometer) takes a reading then pauses, takes a reading then pauses, etc. I think the true air/fuel gauges are a little more expensive than the autometers. The nice thing is that under WOT you can get an idea of whether or not you are running lean/stoich/rich. Hope this helps, E ------------------ 1991 5.0 LX Coupe - 38,000 miles 13.17 @ 106.14 mph w/ 2.138 60'

06-20-2001, 01:21 PM	#3
Patrick Boetticher Registered Member Join Date: Feb 1999 Location: Camarillo/Thousand Oaks Ca Posts: 223	yeah this helps. at idel it reads all the way lean bealrly registering... at WOT it is all the way rich and it doesnt move... it bugs the heck out of me when i drive. how do i tune that.. at idel lean, at WOT all the way rich....??????????????? thx ------------------ ALL NEW PPG Torch Red 95GT, 304ci block, Forged pistons, Ported Explorer Intake, E-303 cam, fully ported and polished and milled E-7 heads, 75mm MAS, BBK Adj. fuel Reg & gauge, BBK Shorty Headers, BBK H-pipe, March Pulleys, 2 Chamber Flowmasters, Kenny Brown 6 point Roll cage, Kenny Brown Panhard Bar, Powerslot Rotors, PBR twin piston calipers, Eibach Sportline Springs, 180* Thermostat, 1/2 Plenum Spacer, MSD 6AL, MSD Master Blaster, MSD 8.8 Wires, 24# Racing Injectors, AFS 10.5" Cobra R's, Nit

06-20-2001, 01:32 PM	#4
withamc Registered Member Join Date: Aug 2000 Location: Thousand Oaks, CA Posts: 396	Patrick - Your adjustable FPR will basically only affect WOT. If it's reading rich at WOT, turn the FPR down until it's reading just barely rich. Idle and cruising the computer adjusts according to the O2 sensor readings.

06-20-2001, 02:31 PM	#5
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	are you coming with us this friday patrick? Also how'd that video turn out? Skyler ------------------ -1989 Saleen Mustang #406- TFS Heads, E-303, edelbrock intake,70MM TB, 73mm MAF, off road H, headers and 3chamber flows. 12.55@107mph 50-175 Nitrous Works WET Kit just added.