LT1-LT4 Modifications 1993-97 Gen II Small Block V8

15 MPG normal with my mods??

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Old Nov 11, 2008 | 09:11 PM
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Default 15 MPG normal with my mods??

Not really too big a deal cause I only fill up once a week. But is it normal to get this gas milage with my mods. CAI, elbow, airfoil, LT's, ORY, Magnaflow catback, 3200 loose stall, and a pcmforless tune.
Just wondering.
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Old Nov 11, 2008 | 09:15 PM
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Are you talking city or highway? What gears do you have? How do you drive the car?
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Old Nov 11, 2008 | 10:52 PM
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Well that stall is def goin take a toll on your fuel milage...

But depending on how you drive your car, 15mpg may be good....lol..
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Old Nov 11, 2008 | 11:18 PM
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It's my daily driver, I'd say 3/4 of the way to work is stop and go lights and the 1/4 freeway. I drive it like a stalled car should be driven. As in I like to punch it now and then, but i've been watching the mileage and it seems that no matter if I drive it like a grandma or beat on a lot, I still come up with about 215-220 miles before I fill up again. Again, I'm not worried you have to pay to play. Just curious.
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Old Nov 11, 2008 | 11:20 PM
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I get about the same with my 6speed even. Mostly town. I do like to do a bit of spirited driving though. lol
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Old Nov 11, 2008 | 11:23 PM
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I usually get around 17-18 before my headers... idk if that helps milage or not...lol
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Old Nov 11, 2008 | 11:26 PM
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Originally Posted by tspence45
I get about the same with my 6speed even. Mostly town. I do like to do a bit of spirited driving though. lol
A BIT of spirited driving?! With a 6spd you should get 18s still.


As for a 3200 with mostly light-to-light driving, I'd say 15mpg is pretty darn good heh I'm thinking a tune could help that a little, but I'm not sure how necessary one is after a stall, or one of that size at least.
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Old Nov 11, 2008 | 11:31 PM
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A stalled car always gets pretty horrible intown mpg. take it on a roadtrip I bet you'll be back in the low 20 mpg.

I get around 14-15 if I drive my car some highway and play here and there i get around 190 miles a tank. If i really drive it nice, mostly highway i get around 18.
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Old Nov 11, 2008 | 11:31 PM
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I had to get it tuned already for the stall and longtubes with out smog stuff. Oh yah I have 2.73's so until it goes into lockup I have a lot of revving to keep the car going.
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Old Nov 11, 2008 | 11:33 PM
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Originally Posted by nomoneyz
Not really too big a deal cause I only fill up once a week. But is it normal to get this gas milage with my mods. CAI, elbow, airfoil, LT's, ORY, Magnaflow catback, 3200 loose stall, and a pcmforless tune.
Just wondering.
Not bad at all. Mine gets like 15-17 City With only Catback. 3.23 gears
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Old Nov 11, 2008 | 11:35 PM
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Originally Posted by Formula350
A BIT of spirited driving?! With a 6spd you should get 18s still.

I'm pretty sure I have a bad o2 though, and I know how that can affect gas mileage. Plus, I can't get an accurate reading after the tune. My speedo's off, so my Odometer and tripometer aren't going quite as fast as they should, because my speedometer says I'm doing about 5-10mph slower than I actually am. I'll get the tune fixed in a couple weeks though, so the gearing will be corrected.
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Old Nov 12, 2008 | 05:55 AM
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I'm lucky to get 175 miles on tank. All my drivning is in town and I have a heavy foot.
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Old Nov 12, 2008 | 07:22 AM
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dang i should consider myself lucky then because i drive pretty spirited and get 22 overall
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Old Nov 12, 2008 | 10:07 AM
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my bone stock auto gets about 21-23 with mixed city and highway. I cant believe that the guy with a m6 is only doin 15 mpg's that doesnt sound right at all. Most guys on here with m6's with bolt ons and 3.73-4.10 gears are getting 21-25 mpg's i know the ls1 guys are pullin 27-29 with all highway. Im gonna be swappin a six speed in my car in a couple months i hope my mileage increases. i get about 315 miles to a tank when i keep out of the throttle right now.
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Old Nov 12, 2008 | 02:16 PM
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ive touched 20-22mpg a few times ALL city with my camaro with mods in sig. With some spirited driving also
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Old Nov 12, 2008 | 02:19 PM
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15mpg? i wish... im gettin about 12 around town...


should i be getting better? I really only drive below 1500rpm 90% of the time. Think i need a tune?
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Old Nov 12, 2008 | 02:25 PM
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i am around 10 mpg or under city driving
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Old Nov 12, 2008 | 02:53 PM
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I get 14-15 with stall and 3.42s
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