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View Full Version : 5.3 L gas mileage and power increases phxman 03-26-2005, 09:45 AM 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, 07:21 PM Volant or similar intake, good exhaust, Wester's tune. phxman 03-28-2005, 07:37 PM Okay 99-2door, what's a Wester's tune? joerocks 03-28-2005, 11:31 PM 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, 01:11 PM 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 03-29-2005, 11:07 PM are the hypertech tuners any good? |