fuel/induction gurus....maf help

ok to start off, i have built my curent '93 notch about identical to my old '89 notch.

i expected the car to run about 3 tenths slower due to full suspension and power everything.

it was over 7 tenths slower, couldn't get out of the 14's , running 4.10's , et street radials, lt's , on a 5-speed car.

my '89 went 13.20's like this , best run of the night was 14.02 @ 97 w/ a 1.83 60'

now here is my question, the car has a supercoupe meter on it. it's a sc meter for sure, i checked the numbers.

could this be affecting performance? it smells super phat but fp at idle (vac on) is about 32 psi

it appears the sc meter is a 70mm (comparing numbers to a 5.0 meter)
but i'm wondering if the sampling tube is different causing a superrich condition???????????

on the 80 shot NOS 5115 dry kit, it went 13.15@105 1.82 60'
but the old car went 12.52@109

it knocked off the right ET on the juice for the power gain, but so slow to begin with.

help me out guys

ok, the sensor and meter are both from the SC

this was on the car since i've had it , and i just realized it.

the computer i am assuming is the stock stang puter.
but i'll have to pop the kick panel and check for sure.

the car was all stock excaept for some simple boltons, exhaust , suspension .... little stuff

Daggar said:

Hey Bob,

You say that the meter and computer have been in the car from the get-go. Have you also had the problem all along? --or-- is this a problem that's cropped up recently?

Click to expand...

i haven't had the car 1 year yet.

but yes, been in it since i got it, and not a new prob. i only realized it from this recent trip to the track. my first trip it went 14.60's on 2.73's and et street rad's , but it was bogging , so i blamed the bad times from too much tire and not enuff gear (my '88 notch all stock went 14.20's 2.73 gears and street tires). the smell has been all along.

i am inclined to believe now, that the sensor is calibrated for 30 lb. injectors. i am not 100% sure, but but so far thats what i found. i'm gonna get a different maf (stocker ) to see. they are a dime a dozen for the stocker.

but based on this meter , if it is in fact cal'd for 30 lb'ers and i have 19's.....do you see 1/2 second or more from being too phat. i have to believe so...but i am just hoping too.

and guys thanks a ton. you have no idea how angry i was at the track...my buddies aod car set up like me was giving me a stomping.