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- The 99-06 GMT800 Chevy and GMC Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=58)

- - 5.3 L gas mileage and power increases (https://67-72chevytrucks.com/vboard/showthread.php?t=147860)

phxman

03-26-2005 10:45 AM

5.3 L gas mileage and power increases

Okay, new area, now I can ask. Has anybody had any success increasing the gas mileage out of their 5.3 Liter? Also, anything that helped with HP increase too? Got an 02 Yukon and would like to get better MPG and HP if possible.

99-2door

03-27-2005 08:21 PM

Volant or similar intake, good exhaust, Wester's tune.

phxman

03-28-2005 08:37 PM

Okay 99-2door, what's a Wester's tune?

joerocks

03-29-2005 12:31 AM

not a whole lot you can do about this one as far as MPG . mine has a single flowmaster 40 series (one 3in inlet and 2 2.5in outlets) with dual tips ran out the back, and the k and n FIPK kit but i only noticed a small difference out on the interstate on long trips(more miles between gas stops) and it seems like nothing around town. hope this helps...........joe

99-2door

03-29-2005 02:11 PM

Quote:

Originally Posted by phxman

Okay 99-2door, what's a Wester's tune?

http://westers_garage.eidnet.org/Index2.htm

WARNING +++++ REALLY ANNOYING MIDI FILE ON THIS SITE

cochran63

03-30-2005 12:07 AM

are the hypertech tuners any good?

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