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Curiosity has the best of me. MPG.

J

JT2002GTP

New member
I'm getting 6 mpg less now after light mods, is this normal ? I'm not complaining just curious. Or is it just that I have a hard time driving it without the twizlers spinning. 02 gtp, catless down pipe,jmb fender intake, 180 stat, 605 plugs, wbody flashed PCM, modular 3.5 pulley.
 


if your driving it with your foot to the floor, yeah, mpg will suffer. re set the dic. and drive it like a old lady for a few days. see what you get then.
 
Errmmmm.... I'd say you have bigger issues.

I say this because I drive my 99 like the money grubbing dirty hooker she is... I swear she owes me money.

I have this addiction the Wha- Whiiiiiiiiiiine noise at full throttle. If it breaks it breaks, that's what spare parts and maintenance is for right? I drive 80% city too, light to light playing, making Rustangs and Civics mad, making Vettes and Maros wonder what I'm thinking, IDGAF.

19mpg on the DIC, about 15 just city by my calculations.
 
Amazingly enough, you'd get some fuel economy back by going to 606 plugs, and a 195 t-stat. If I had one of these again, that's what I'd run with the fans set to I at 205 and II at 215.

Also you might be running into the cat test issue. Is your rear O2 sensor connected?

TLSheff said:
Errmmmm.... I'd say you have bigger issues.

I say this because I drive my 99 like the money grubbing dirty hooker she is... I swear she owes me money.

I have this addiction the Wha- Whiiiiiiiiiiine noise at full throttle. If it breaks it breaks, that's what spare parts and maintenance is for right? I drive 80% city too, light to light playing, making Rustangs and Civics mad, making Vettes and Maros wonder what I'm thinking, IDGAF.

19mpg on the DIC, about 15 just city by my calculations.
Click to expand...

I was about to say, no way you'd get 19 driving like that.

15, yes.
 


Scottydoggs said:
if your driving it with your foot to the floor, yeah, mpg will suffer. re set the dic. and drive it like a old lady for a few days. see what you get then.
Click to expand...

HAHA i cant do that. When i go to work i hit a highway in about 2 mins so for me driving like grandma wont do. They love to do 80 or 90 here so yeah MPG whats that lol.
 
Sputtering down the highway on the weekends for Date Nights with the GF bumps it back up on the DIC

Reality figures tho are much lower. City is killer.

But 6MPG is crazy low, Unless you stay in 1st everywhere you go and don't care about driving at 5500 rpms to work.
 
ericspecullaas said:
HAHA i cant do that. When i go to work i hit a highway in about 2 mins so for me driving like grandma wont do. They love to do 80 or 90 here so yeah MPG whats that lol.
Click to expand...


if your on the highway asap, your mpg should be great. lol and you can drive like miss daisy on the highway. light on the pedal. thats all you can do.

some honda boy was changing lanes back and fourth earlier when i went out, ( for no reason) so i got up to him, floored it and looked for that wtf look from him. yes i got the look lol he can have that fart can......my car whines, take that ricer.
 
Im not sure what wbody set fans at, they do stay on now after turning eng off. Would I lose any perf running 606 plugs ? 02 sensor deleted in PCM flash.
 
TLSheff said:
Sputtering down the highway on the weekends for Date Nights with the GF bumps it back up on the DIC

Reality figures tho are much lower. City is killer.

But 6MPG is crazy low, Unless you stay in 1st everywhere you go and don't care about driving at 5500 rpms to work.
Click to expand...

The OP states 6 mpg less than he used to be getting. Still not a very useful figure though.

JT2002GTP said:
Im not sure what wbody set fans at, they do stay on now after turning eng off. Would I lose any perf running 606 plugs ? 02 sensor deleted in PCM flash.
Click to expand...

Well how are the 605's burning? Do you have much KR? and so on.

If they're a little cold, then it will run and idle better with the 606's. Will be a touch more prone to KR, but I'd pulley up if that's the case.
 


< Long day, reading skillz on the low. I missed the "less" part... Just saw "I'm getting 6 mpg now after light mods, is this normal?"

:th_scratchhead: I was like WTH did you do to the car to get 6 MPG after light mods????

:th_laugh-lol2:
 
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