HELP Running lean with 50lbs injectors - Page 2

Scothew · 11-19-2005, 04:38 PM

Btw if anyone is wondering, its a 331 w/ systemmax heads/intake, I think Marc said a custom lunati cam and a vortech s-trim.

QWKSNKE · 11-20-2005, 03:01 AM

Marc, are you still running the little shot of juice

Shankin · 11-20-2005, 06:29 AM

I ran 55s and a recal meter with a couple of my set ups with no tuning software with no problems. Get that thing on a dyno and see what is going on with it. A 75 is a small meter for 50s i would think. Usually at that power level you would have a larger mass air.

QWKSNKE · 11-20-2005, 07:09 AM

Quote:

Originally Posted by Shankin

. A 75 is a small meter for 50s i would think. .

very true

Italian LX · 11-20-2005, 07:32 AM

Quote:

Originally Posted by Scothew

Btw if anyone is wondering, its a 331 w/ systemmax heads/intake, I think Marc said a custom lunati cam and a vortech s-trim.

Is this in an '04 Mach1?!?

If so, what CPU is he running?

QWKSNKE · 11-20-2005, 08:13 AM

Quote:

Originally Posted by Italian LX

Is this in an '04 Mach1?!?

If so, what CPU is he running?

no he has the blue and silver fox GT. We met him at FFW this year. It was him and the guy in the black 4-eye (Jason I think).

04 Mach1 · 11-20-2005, 04:12 PM

I have since removed the juice. Have installed the new forced induction fuel pump. I have checked for intake leaks. At the dyno the car stayed lean though-out pull. I can let the car idle and it glows the headers red. On the first pull FP 32lbs the A/F was 14.7 increased the FP 8lbs and the A/F was 13.9. The FP never droped off just increased about 3lbs. I'm thinking my meter recal ain't right. Does that make sense?

QWKSNKE · 11-20-2005, 04:55 PM

no its not right but like Shankin mentioned, I believe you have went beyond the limits of a 75mm MAF. You could try getting them to recal it again (since obviously they didn't do it right to begin with).

by the way, what is your timing set at?

Also, you are not running near enough fuel pressure. Should be at least around 43 psi

04 Mach1 · 11-20-2005, 07:31 PM

I have my cam 4 degrees advanced and the base with the distributor sitting at 6 with the pill out. So you agree my maf is off and it shouldn't be running lean and with my FP set right I should be able to run without a tune, for now.

QWKSNKE · 11-21-2005, 04:55 AM

Quote:

Originally Posted by 04 Mach1

I have my cam 4 degrees advanced and the base with the distributor sitting at 6 with the pill out. So you agree my maf is off and it shouldn't be running lean and with my FP set right I should be able to run without a tune, for now.

yeah kinda. I wouldn't pay for the recal again though. If they won't do it for free, see if you can find an 80mm pro-m cal'd for your 50's

11-19-2005, 04:38 PM	#11
Scothew Censored Jihad Join Date: Dec 2004 Location: B'ham, AL Posts: 4,108	Re: HELP Running lean with 50lbs injectors Btw if anyone is wondering, its a 331 w/ systemmax heads/intake, I think Marc said a custom lunati cam and a vortech s-trim. __________________ Theres only one way to get to Carnegie Hall..... .... Practice.

11-20-2005, 03:01 AM	#12
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Re: HELP Running lean with 50lbs injectors Marc, are you still running the little shot of juice __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

11-20-2005, 06:29 AM	#13
Shankin Senior Member Join Date: Jul 2005 Posts: 339	Re: HELP Running lean with 50lbs injectors I ran 55s and a recal meter with a couple of my set ups with no tuning software with no problems. Get that thing on a dyno and see what is going on with it. A 75 is a small meter for 50s i would think. Usually at that power level you would have a larger mass air. __________________ Pro Speed Performance 770 222 5015

11-20-2005, 04:12 PM	#17
04 Mach1 Bet I red light B4U Join Date: Aug 2005 Location: ANNISTON, AL Posts: 975	Re: HELP Running lean with 50lbs injectors I have since removed the juice. Have installed the new forced induction fuel pump. I have checked for intake leaks. At the dyno the car stayed lean though-out pull. I can let the car idle and it glows the headers red. On the first pull FP 32lbs the A/F was 14.7 increased the FP 8lbs and the A/F was 13.9. The FP never droped off just increased about 3lbs. I'm thinking my meter recal ain't right. Does that make sense?

11-20-2005, 04:55 PM	#18
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Re: HELP Running lean with 50lbs injectors no its not right but like Shankin mentioned, I believe you have went beyond the limits of a 75mm MAF. You could try getting them to recal it again (since obviously they didn't do it right to begin with). by the way, what is your timing set at? Also, you are not running near enough fuel pressure. Should be at least around 43 psi __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

11-20-2005, 07:31 PM	#19
04 Mach1 Bet I red light B4U Join Date: Aug 2005 Location: ANNISTON, AL Posts: 975	Re: HELP Running lean with 50lbs injectors I have my cam 4 degrees advanced and the base with the distributor sitting at 6 with the pill out. So you agree my maf is off and it shouldn't be running lean and with my FP set right I should be able to run without a tune, for now.