is this normal?

Skywalkr57 · 05-14-2002, 04:28 PM

looking at my list of mods should i be gettin low 100 miles out of a tank of gas?? ive been taking it easy and all. that just seems alittle low for me. not sure how much the pump and injectors changed the guzzling. im not seeing any leaks around the lower manifold but when i give it a decent amount of throttle i can smell raw gas in the car. where else could it be coming from?? help

fiveohpatrol · 05-14-2002, 06:13 PM

sounds like you are running way rich.

Just for comparison, I get about 230-250 miles per fillup (usually between 12-14 gallons) and mine actually gets worse mileage than alot of others. So you definately have a problem.

what is your fuel pressure set at?

also, is your MAF calibrated for 24lb injectors?

With your mod level, I would ditch the 24lb'ers and put the stock ones back in.

Falcons Talon · 05-15-2002, 09:45 AM

Dangit, I'm only getting like 210 miles on a fillup...What's up with that?

fiveohpatrol · 05-15-2002, 10:57 AM

Quote:

Dangit, I'm only getting like 210 miles on a fillup...What's up with that?

there are alot of factors which determine gas mileage, not just the type of car it is.

You have to look at driving style, transmission, tune of engine, climate, quality of gas, where you do most of your driving (ie highway or city).

I have a T-5 and do atleast half of my miles (if not more) on the highway. These 2 contribute to a little better mileage. But my heavy foot, the 3.73's, and the cam tend to hinder it somewhat

cyberstang5.0 · 05-16-2002, 07:29 AM

I'm lucky if I go into the 200's using 3/4 of my tank. I even dyno tuned my car. (I have a few more mods then you do though) I picked up an additional 20 ponys from doing it

Oh well, my MPG is going to get worse soon. I don't care much... it's a price I have to pay for a fast car

gtsr515 · 05-16-2002, 02:53 PM

The smell could be from the PCV valve coming loose, or a bad evap canister.

Skywalkr57 · 05-18-2002, 11:19 AM

well i found a gas leak where the filler neck meets the tank so there a problem. ill fix that and see how much better gas mileage is. also right around 5k it sounds like there are marbles bashing around in my motor and its not making any power. its not detonation, ive got 93 octane and timing at 13*. i thinki im gonna change my injectors back in cause it wasnt doing it with them and was pulling hard past 6k. now it feels like my old cam. maybe going lean up top?

05-14-2002, 04:28 PM	#1
Skywalkr57 Registered Member Join Date: Dec 2000 Location: Rochester NY Posts: 21	is this normal? looking at my list of mods should i be gettin low 100 miles out of a tank of gas?? ive been taking it easy and all. that just seems alittle low for me. not sure how much the pump and injectors changed the guzzling. im not seeing any leaks around the lower manifold but when i give it a decent amount of throttle i can smell raw gas in the car. where else could it be coming from?? help __________________ 1988 GT Remanufactured 302 Holley systemax I, cold air induction, 76mm C&L MAF conversion, underdrive pulleys, 24# injectors, 190lph fuel pump, equal length shorty headers, off road h-pipe, force II catback, PRO 5.0 shifter, fuel pressure oil pressure & water temperature gauge, crane valve springs

05-14-2002, 06:13 PM	#2
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	sounds like you are running way rich. Just for comparison, I get about 230-250 miles per fillup (usually between 12-14 gallons) and mine actually gets worse mileage than alot of others. So you definately have a problem. what is your fuel pressure set at? also, is your MAF calibrated for 24lb injectors? With your mod level, I would ditch the 24lb'ers and put the stock ones back in. __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

05-16-2002, 02:53 PM	#6
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	The smell could be from the PCV valve coming loose, or a bad evap canister. __________________ Remember...2nd place is 1st place for losers!

05-18-2002, 11:19 AM	#7
Skywalkr57 Registered Member Join Date: Dec 2000 Location: Rochester NY Posts: 21	well i found a gas leak where the filler neck meets the tank so there a problem. ill fix that and see how much better gas mileage is. also right around 5k it sounds like there are marbles bashing around in my motor and its not making any power. its not detonation, ive got 93 octane and timing at 13. i thinki im gonna change my injectors back in cause it wasnt doing it with them and was pulling hard past 6k. now it feels like my old cam. maybe going lean up top? __________________ 1988 GT* Remanufactured 302 Holley systemax I, cold air induction, 76mm C&L MAF conversion, underdrive pulleys, 24# injectors, 190lph fuel pump, equal length shorty headers, off road h-pipe, force II catback, PRO 5.0 shifter, fuel pressure oil pressure & water temperature gauge, crane valve springs

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05-15-2002, 09:45 AM	#3
Falcons Talon T.P.M. President Join Date: May 2002 Location: Brownsville Posts: 265	Dangit, I'm only getting like 210 miles on a fillup...What's up with that?

05-16-2002, 07:29 AM	#5
cyberstang5.0 347ci of HORSE POWER!!! Join Date: Jul 2001 Location: Houston, TX Posts: 1,416	I'm lucky if I go into the 200's using 3/4 of my tank. I even dyno tuned my car. (I have a few more mods then you do though) I picked up an additional 20 ponys from doing it Oh well, my MPG is going to get worse soon. I don't care much... it's a price I have to pay for a fast car