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#1
03-27-2008, 04:05 AM
Hummer Veteran
Join Date: Mar 2008
Posts: 205
Throttle Body bypass???
I have seen on a couple of H2 performance supply sites that a coolant line passes through the throttle body. This coolant after running will heat up the throttle body and reduce power. This leaves the window for a bypass (hose and clamps) to re-route the coolant around the throttle body. Has any one heard of this, or tried this, or any info on it would be great.
Thanks
B
#2
03-27-2008, 04:23 AM
Hummer Veteran
Join Date: Feb 2006
Location: Charlotte, NC
Posts: 181
Re: Throttle Body bypass???
I have it done. Not sure that it makes a difference at all, but for the 2 or 3 bucks.....why not? Very easy to do...takes maybe five minutes.
Tim
#3
03-27-2008, 06:43 AM
Hummer Expert
Join Date: Jul 2006
Posts: 691
Re: Throttle Body bypass???
This mod has been around awhile. I did it to my Corvette back in 1996.
The coolant is run thru the throttle body to prevent it from icing up.
In theory, it also heats up the air/fuel charge and make it less dense.
Fine mod if you live in a warm(er) area. I don't think I'd try it in Alaska though.
#4
03-27-2008, 08:20 AM
Hummer Authority
Join Date: Nov 2004
Location: Little Rock, Arkansas
Posts: 1,784
Re: Throttle Body bypass???
Did the mod to 99 Silverado in 99 and H2 when new. If I remember correctly the bypass kit comes in with H2 supercharger kit by Magnuson. It goes back to the idea of heated air or fuel bad and cooled is better.
It needs to be put back to stock if climate is a cold one and icing etc. is something you live with at length.
TAZ
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05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
#5
03-29-2008, 12:08 AM
Hummer Expert
Join Date: May 2007
Location: PHOENIX AZ
Posts: 681
Re: Throttle Body bypass???
Yup that mod works and if you live in a hot climet it works very well .
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