mpg question

**kledmyster** · 06-01-2007, 02:06 PM

whats the difference in mpg between a 5.7 goat and a 6.0? im gettin around 11 on my ls2. was wondering wat u guys with the ls1 r gettin, and ls2 guys. thnx

**jinouk67** · 06-01-2007, 02:28 PM

Is ur stick or automatic? Mine is a/t i was getting around 13 mpg in the city but since my modification averaging 9.8 mpg city & up to 22 mpg hyway. Modificatiopn:comp cam, spring,titanium retainer, 7.400" pushrod, off road headers, 2800 stall torque converter.

**superchargedblackgto** · 06-01-2007, 03:21 PM

I have an m6....don't really know what I'm getting never really checked it.....I know it's worse than that.....can't keep my foot out of it and didn't buy it for gas mileage....If I was worried about gas I would have bought a ricer....lol

**kledmyster** · 06-01-2007, 04:36 PM

ive got an m6, highway i get around 20. definatly right about the ricer comment lol.

**GOT1GOAT** · 06-04-2007, 09:30 AM

Last week I took it on a 200 mile round trip and averaged 24 on the highway with cruise on 65 mph.
The best I've gotten since my predator tune.
I wouldn't even try to calculate city because of my lead foot.

**kyemt** · 06-04-2007, 04:12 PM

ive got as high as 27.3 on highway, and i get about 16 in city but this is with a M6 and using the cags lol its hard to do but i stay out of it most of the time,

**ultra_badass** · 06-04-2007, 04:36 PM

i get 20 in town and 27-30 on highway 75-80 and i dont stay off of it

**jinouk67** · 06-04-2007, 06:27 PM

You get 20 in city abd u don't stay off the pedal , I don't believe it. What is you're mods on the car?

**ultra_badass** · 06-04-2007, 06:29 PM

all stock i couldnt believe it either but thats the truth

**jinouk67** · 06-04-2007, 07:01 PM

Awesome, I wish i had that kind of mileage before modifications. If i was , even after mods i would least get 15 mpg. Does anyone out there have a similiar mods ? if so what is ur city driving mpg under normal driving? i'm getting 9.8 mpg i think before mods i was getting 13-15 mpg. modifications: comp cam intake 222 exhaust 224(little bigger than factory cam), comp cam 7.4" pushrod,heaver spring w/titanium retainer,2800 stall torque converter,throttle body coolant bypass and off road stainless works headers w/flowmaster from cat. back.

**mtjoy** · 06-04-2007, 07:24 PM

I got 22 mpg on my drive back from Houston after the cam install and 24 mpg on the way up with just headers, CAI, and no tune

**ultra_badass** · 06-04-2007, 11:22 PM

i missed 1 thing i do have a borla cat back

**Rob** · 06-07-2007, 09:10 AM

Best I've gotten was 31mpg on one tank doing 70mph. It was averaging 33mpg at 55 though. That was with lean cruise enabled. It usually got 23-25mpg mixed driving.

With the latest round of mods, 27mpg seems the best it'll do now. With an average of 21-23mpg in mixed. Still not too shabby for over 430 to the wheels