gyrene2003

ok, so las weekend i installed my pacesetters and TSP catted y. Now it seems i have to get gas every 3 days(i drive 40 miles 1 way to work). Now obviously im in it alittle more, but not enough for my milage to be this bad now! What do u guys think, im runin the stock o2s. Should i get the corvette ones. had a buddy hook up his programmer after install and it showed that my car was running leaner, so the headers are working.

gyrene2003

anybody?

GMTECH4

Your pcm has to re-calibrate itself for your new exhaust. it does this in your short and long term fuel trim. monitor your long term fuel trim. pos numbers mean lean and neg numbers mean rich.

gyrene2003

so this is just indicative of not having a tune? Cause the computer showed that the car was runing lean.

gyrene2003

so ur saying it will get better with time?

taintedmeat

iTrader: (1)

You're complaining about 240 miles a tank? I wish I got that kind of mileage

gyrene2003

I was being very jenorous when i said, gas every 3 days. thats if im not in it AT ALL! But yesterday i got gas and again today because of making some extra trips.

INMY01TA

iTrader: (1)

What was your milaege before/after the headers? Hard to tell if there's a real issue at hand when we dont know how much it dropped.

gyrene2003

Well, i dont have exact numbers, but before i would be able to make a full tank last 3 days, and that is driving 40 miles to work, then driving around base all day, and still messing around alittle with the local yokles on the interstate, now it seems it would be more acurate to say, under the same driving conditions that same tank will last 2 days!

98Camarod

iTrader: (43)

I get less than 200 miles a fill up. I fill up when I get to a 1/4 tank.

INMY01TA

iTrader: (1)

C'mon people. Fill tank, reset trip odometer. Drive. Refill tank, divide # of miles driven by # of gallons added and Voila. You have your gas milaege.

5_02ls1

iTrader: (20)

good example of why a tune is needed.if your o2s are reading lean the ecu is dumping in more fuel get it tuned

gyrene2003

ok, well that makes sense!

GMTECH4

although i haven't installed long tubes yet on my car from my research it's a hit or miss with-out a tune. some people get better gas mileage and some don't. i still say give it a while with just normal driving and see if you pcm can adapt.

H21surfer

iTrader: (2)

Just did my headers and ORY, and now I am getting around 150-160 miles till I hit the 1/4mark. I figured it would get a little better with a tune, but I am putting in a high stall torque converter so I am not expecting much improvement in the city.

NEW 2 THE F BODY

iTrader: (3)

I just got my PS LT's and ory on last night with new bosh 13111's but we got snow so I can't drive yet. I'll let yu know how mine goes. I have few mods and never got good milage to begin with though. Stacey

98Camarod

iTrader: (43)

I got 18.91 miles to the gallon. I was surprised as hell.

GMTECH4

last time i checked my mpg i was getting 25-28 mpg highway