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#2
10-15-2010, 10:57 PM
Hummer Veteran
Join Date: Jun 2008
Location: Cleveland
Posts: 162
Re: 2009 H2 gas mileage improvement?
GM performance Parts air intake, Corsa Sport Cat Back Performance Exhaust, Westers Tuners 93 Hot tune
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Richard
#3
10-16-2010, 12:55 AM
Hummer Veteran
Join Date: Jan 2007
Posts: 167
Re: 2009 H2 gas mileage improvement?
Quote:
Originally Posted by HUMMERICH23
GM performance Parts air intake, Corsa Sport Cat Back Performance Exhaust, Westers Tuners 93 Hot tune
At least it will sound better while giving you a .5 increase in mpg.
#5
11-12-2010, 02:10 PM
Hummer Professional
Join Date: Aug 2007
Location: Bartlett, Illinois
Posts: 486
Re: 2009 H2 gas mileage improvement?
Quote:
Originally Posted by vetteSUT
Premium burns better.... aka burns faster. Stick with 87
This is actually false, higher octane is more resistant to pre-ignition/detonation and actually burns slower.
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2008 H2 SUV Luxury: Solar Flare ext/Black int
SOLD 2006 H2 SUV Luxury: Pewter ext/Black int.
2002 Corvette Z06 Blue/Ebony (light mods)
1/4 mile: 11.661@118.86
2013 Audi S4
2002 Yamaha YZF R1 Blue/White
1/4 mile: 10.51@136
2006 Sea-Doo RXP (70.6mph GPS)
2005 Sea-Doo RXT
#6
11-12-2010, 04:29 PM
Hummer Veteran
Join Date: Jul 2005
Posts: 80
Re: 2009 H2 gas mileage improvement?
90% of my driving is highway. Avg 15.5 - 16 mpg @ 70 mph..
Royal Purple Synthetics
Airraid Air Filter
160 thermostat
Throttle Body Bypass
Tires at 50 psi
__________________
2005 Black LUX
37x13.50R17 Toyo MT
Torsion keys. 2" rear coil spacers
2" wheel spacers
In Tune I2, Air Raid Filter, Air Raid MIT, throttle body bypass, straight pipe exhaust
Cognito UCAs. Kryptonite UCA ball joints. Kryptonite tie rods. Kryptonite death grip Idler. Moog HD pitman.
5.13 gears. E-locker front
Bilstein stabilizer
Last edited by Stellar : 11-12-2010 at 04:38 PM.
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