fuel pressure with 24ers

**apv-stang** · 12-10-2003, 09:44 PM

all right back to the question at hand...

i lowered my fuel pressure down to 40lbs with the line off

and it serouisly runs worse than before

i dont know what to f***ing do...

im about to place an m-80 in the gas tank and call it inssurance

just kidding:D

**frank woodall** · 12-10-2003, 10:06 PM

Originally posted by apv-stang
all right back to the question at hand...

i lowered my fuel pressure down to 40lbs with the line off

and it serouisly runs worse than before

i dont know what to f***ing do...

im about to place an m-80 in the gas tank and call it inssurance

just kidding:D

If you set your FP to 38lbs W/ no vac. Just leave it there for now, There must be something else wrong. Make sure everything is connected properly, no check eng lite, proper MAF calibration, Is it rich or lean ?, Does it surge ?, Etc.
Give a little more in depth story on what is going on.

**green93notch** · 12-11-2003, 08:57 PM

We're all here for fun and support to each other.

This is why i love this site! :)

PLUS we have numerous 120+ mile novi 1k cars in the mix and other up and coming superstars

deff me! i got my money on the 5.0 because with my h/c/i i was beating them bad from a roll, even with them punching it 1st, from a stop it would be the same, my buddy brian with his 98 cobra with pullies, CAI, flowmaster american thunders, O/F H-pipe, 373 gears i would beat him by about 8 cars up to 100. he would love to see my car rip and i loved the sound of his twins twistin up in RPMs :D dads got a 01 cobra and its been going back and forth between he and i but when it comes down to it, we're a TEAM.

**apv-stang** · 12-12-2003, 04:06 PM

everything is hooked up and the check engine is not on

the car surges just a little, it does it at around 2400 to 2700 rpms, i cant tell if it is rich or lean-the injectors and mass air are calabrated

**frank woodall** · 12-12-2003, 05:45 PM

Try clocking (rotating) your MAF meter one way or the other, alot of times this small trick really helps with surging.

**apv-stang** · 12-12-2003, 11:02 PM

i have tried that once before and it helped the first time

i think i have it where it runs the best

i havent driven the car in a few days though-because of the snow

i also have a ram air setup and have heard that people have problems with it

**Goliath5.0** · 12-13-2003, 02:39 AM

APV-STANG: List *ALL* of your mods all the way down to the fuel pump in your tank, etc... etc... As well as the settings on certains components such as timing, FP w/vac off(we know that one I believe :) ), if you have an FMU is it calibrated for your injectors. You mentioned a ram air setup? Could you elaborate a little more on that please.

The more info you give us, the better we can assist you :)

Laters,
Chris

**frank woodall** · 12-13-2003, 01:24 PM

i havent driven the car in a few days though-because of the snow

Snow....whats that !
I live in Fla. :p

**Goliath5.0** · 12-13-2003, 03:44 PM

Originally Posted by frank woodall

i havent driven the car in a few days though-because of the snow

Snow....whats that !
I live in Fla. :p

:werd:

Is that the stuff they sell in a cup with your choice of liquid flavoring? LoL!

/me lives in south Texas and seeing snow here is like seeing a pirate in the desert in AZ! :D

**regattacoupe** · 12-13-2003, 05:07 PM

I live in ohio....nuff said

**apv-stang** · 12-15-2003, 02:26 PM

1991 black gt with gray interior and ponies
timing is at 10*-
novi 1000-single belt
stock h/c/i
24#ers
75mm maf
65mmtb
1 5/8 headers with o/r h-pipe-dumped flows
msd 6a box-with msd blaster coil
autolite plugs-ap24's-gaped at .32
f150 crank pulley
no smog
190 lph fuel pump
hurst shifter ;)
lowered with eibach springs
3.73 with mac upper and lower control arms-245 bfg street tires
and a jvc cd player-thats where the h.p. comes from :p

i changed the disk in the fmu but dont know if it is the correct one

the ram air is elbowed off of the maf sensor and a tube runs down to about where the fog light is and has a fat *** k&n on the end

i hope that is enough stuff to get an idea

**5150 LX** · 12-15-2003, 04:30 PM

Originally Posted by apv-stang

i havent driven the car in a few days though-because of the snow

:p Mid 70's here today but it's a little windy.

Just for grins, try disconnecting that Ram-air and see how it runs.

**apv-stang** · 12-15-2003, 11:23 PM

hey hey hey-snow sucks-i know-just wish i had a 4x4 right now though

ill try disconnecting my ram air but now im going out side to make some snow angels :D

**apv-stang** · 12-16-2003, 03:27 PM

do you guys think it could be my o2 sensors causing any of this

i ask because one of the guys i work with said that it might cause some of these problems

just a thought

scott

**Goliath5.0** · 12-16-2003, 05:24 PM

Scott, do you have an FMU?

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