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DFI and ECM Discuss all aspects of DFI (Digital Fuel Injection), ECMs (Electronic Control Module), scanners, and diagnostic equipment. Fine tune your Third Gen computer system for top performance.

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Old 04-25-2008, 11:07 AM   #1
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Join Date: Oct 2004
Location: TN
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Car: 1989 IROC
Engine: 350

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Gas mileage/Fuel economy
I hope this is the correct place to ask this. I as many I am sure are
feeling the gas crunch. I need/want a truck, but want good gas
mileage, so that leads me to want get a rice burner. I don't have the
room or funds to store my 1989 IROC and I really love driving it (3 of 5 cars
I owned were Camaros) . So is there any way to get my 350 to get
35 mpg? It is my daily driver and I would love to be able to flick a
switch and go from power to performance. I would love to hear any
ideas or suggestions on this subject. I have a pure stock engine and
I get about 22 mpg if I don't get on it too often.
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Old 04-25-2008, 12:02 PM   #2
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Join Date: Oct 2007
Location: GA
Posts: 485
Car: 90 Camaro RS
Engine: V6 3.1 MFI
Transmission: 4 Speed Auto 700R4
Axle/Gears: 3.23

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Re: Gas mileage/Fuel economy
well there a post going on alittle about this about best MPG prom:
http://www.thirdgen.org/techboard/di...ght=better+gas (who has the BEST MPG tune? what tricks?)
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Last edited by RS Reaper; 04-25-2008 at 12:06 PM. Reason: Broken link
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Old 04-25-2008, 04:46 PM   #3
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Car: check
Engine: check
Transmission: check

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Re: Gas mileage/Fuel economy
The '89 code in your ECM has a lean cruise mode. Disabled from the factory. You can enable it and tune it in for better highway mileage.

RBob.
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Old 04-25-2008, 07:22 PM   #4
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Re: Gas mileage/Fuel economy
You can also do a t-56 swap. The double over drive realy helps alot.
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