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#67399 - 06/05/08 11:34 AM How to improve MPG's
Dthreap Offline
Member
Registered: 06/27/07
Posts: 863
Loc: Canal Fulton, OH
Well I've searched around and come up with these so far. But was wondering what may I have missed?

Plugs
Fuel Injector Cleaner
O2 Sensor
Cold Air Intake

Thanks <3
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#67400 - 06/05/08 11:41 AM Re: How to improve MPG's
palsut Offline
Member
Registered: 08/31/06
Posts: 4021
Loc: Batavia, Ohio
I'm not sure what kind car you have. I guess you have gt or gtp with 3.8 or supercharger engine. Get 3.1 engine from Ed at Cleveland, Ohio lol

Try to go 55 mph every highway and avoid rabbit jump. It works for me but I know everyone disagree with me. wink
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#67401 - 06/05/08 11:57 AM Re: How to improve MPG's
HercMan(Rob) Offline
Member
Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
Proper tire pressure

Ubend delete

shut the motor off at stoplights
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#67402 - 06/05/08 12:00 PM Re: How to improve MPG's
palsut Offline
Member
Registered: 08/31/06
Posts: 4021
Loc: Batavia, Ohio
lol turn motor off at stop light? Now that's great idea. I have to park it and stop like 40 seconds. When the light turn green. Oh it is time to start engine then shift to D. It might take like 15 seconds for that lol
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#67403 - 06/05/08 12:32 PM Re: How to improve MPG's
notladstyle Offline
Member
Registered: 02/25/08
Posts: 493
Loc: Tampa FL
Quote:
Originally posted by palsut:
lol turn motor off at stop light? Now that's great idea. I have to park it and stop like 40 seconds. When the light turn green. Oh it is time to start engine then shift to D. It might take like 15 seconds for that lol
Put it in neutral and cut the engine, and I don't know of many lights that run less than 60 seconds. A minute of idling x 10 stop lights is a lot of gas.
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#67404 - 06/05/08 02:11 PM Re: How to improve MPG's
Dthreap Offline
Member
Registered: 06/27/07
Posts: 863
Loc: Canal Fulton, OH
Alright, my tire pressure is good I just did that. And how much does a U-bend delete cost?
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#67405 - 06/05/08 02:52 PM Re: How to improve MPG's
HercMan(Rob) Offline
Member
Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
I've sat at lights for well over four minutes. Come hang out here in Atlanta and you can share in the misery.
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#67406 - 06/05/08 03:06 PM Re: How to improve MPG's
GrandBoost98 Offline
Member
Registered: 01/09/08
Posts: 415
Loc: CT
wouldnt you think that turning the car off at every stop light would be killer on gas mileage due to having to start the car all the time? that seems like alota extra wear and tear than is needed. putting in N at a light makes better sence
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1998 GP GTP K&N ram air intake, v1.0 pcm, 3" DP, stainless steel Borla cat back, 8.8 wires, 104 spark plugs, 180* T-stat, MPS 3.5, F-body brake kit, KYB AGXs on SSCs, anti pogos, front sway bar and strut tower bar, rear sway bar, solid trans/bottom engine mount, short dog bones w/ poly mounts, alt rewire, rebuilt tranny, pioneer stereo
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#67407 - 06/05/08 03:10 PM Re: How to improve MPG's
palsut Offline
Member
Registered: 08/31/06
Posts: 4021
Loc: Batavia, Ohio
I have half sister live in Atlanta. I went to Atlanta race track last Fall. I noticed the traffic was very heavy but it is still slowly moving around on weekend for race. I can't imagine how bad traffic on week only. I think they have like 6 lanes. That's insane. I'm glad I'm living in Ohio :-)
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#67408 - 06/05/08 03:19 PM Re: How to improve MPG's
HercMan(Rob) Offline
Member
Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
Quote:
Originally posted by GrandBoost98:
wouldnt you think that turning the car off at every stop light would be killer on gas mileage due to having to start the car all the time? that seems like alota extra wear and tear than is needed. putting in N at a light makes better sence
With modern fuel injection it doesn't take any extra gas to start. You will put a little more wear on the starter but that's it.

Old days with carbs it did take a little extra to start but even then it was better then just idling.


http://en.wikipedia.org/wiki/Hypermiling

http://www.hypermilingforum.com/
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#67409 - 06/05/08 06:57 PM Re: How to improve MPG's
72chevman Offline
Member
Registered: 09/27/07
Posts: 1575
Loc: Where Dorthy,Toto & Wicked Wit...
1. Accelerate very slowly
2. Avoid accelerating up hills at all costs
3. Start coasting if you see a yellow or red light ahead
4. Avoid drive thrus
5. Use A\C at highway speed if fan on high isn't confortable
6. Drive with windows down under 45 mph.
7. Make sure alignment is good
8. My car locks up the convertor in 4th gear at 43 mph, so I try and drive 44 in 40 zones and speed limit every where else.

My 03 GT is up at 26 MPG with 75% highway driving.
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03 GT, STB, GM HD sway bars, 35% tint, GE893(37watt)fogs, Flowtech Terminators, 180 T-stat, ZZP DP & PCM, Ceramic PLOG & Crossover, 18" glasspack, 2007 17" Mustang Bullits 235/55/17 Pirelli PZero Nero, 12" R1 D\S rotors, gutted air box, GTP radiator
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#67410 - 06/05/08 07:29 PM Re: How to improve MPG's
StreetShaker Offline
Member
Registered: 01/16/08
Posts: 1264
Loc: Tyrone, Central PA
drive like a normal person and if you get lucky like i did this past week you can snatch 27mpg arounds town (i couldnt believe it)
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#67411 - 06/05/08 08:07 PM Re: How to improve MPG's
20gtp02 Offline
Member
Registered: 04/13/06
Posts: 6709
Normal people don't drive for good mpg, steetshaker!!! Only Prius drivers, or those smart enough to know that the only way to see better gas prices is to drive very defensively.

No one said it, but you never tuned your car after that GPX sticker was applied to the car. That extra 20 hp gain you need to configure in the PCM!
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#67412 - 06/05/08 08:13 PM Re: How to improve MPG's
doa70 Offline
Junior Member
Registered: 02/22/08
Posts: 5
Loc: michigan
driving with the perfomance shift saves me about 2 more miles per gallon...according to the display
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#67413 - 06/05/08 11:06 PM Re: How to improve MPG's
GrandBoost98 Offline
Member
Registered: 01/09/08
Posts: 415
Loc: CT
i lost 2 mpg driving with perf. shit on
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1998 GP GTP K&N ram air intake, v1.0 pcm, 3" DP, stainless steel Borla cat back, 8.8 wires, 104 spark plugs, 180* T-stat, MPS 3.5, F-body brake kit, KYB AGXs on SSCs, anti pogos, front sway bar and strut tower bar, rear sway bar, solid trans/bottom engine mount, short dog bones w/ poly mounts, alt rewire, rebuilt tranny, pioneer stereo
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