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#1
11-17-2004, 05:58 PM
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Throttlebody spacer
Has anyone installed one on your '99, 5.7 Vortec engine? What gains if any did you experience? Right now on my wife's Sub, I put in a K&N air filter and had a Magnaflow muffler with dual exit tailpipes installed behind the rear wheels. Sounds really SWEET. Just looking to increase the gas mileage a little.
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1999 Chevy Tahoe LT 4 dr.<---got flooded out/totaled Now we have a 1999 Chevy Suburban LT, same color and interior as the Tahoe, just 22 inches longer, has the 3rd seat and a BIGGER gas tank 1995 Honda Passport 2 whl dr. 1992 Mazda Protege DX-5 spd. 2005 Keystone Outback 21RS ~~~HAWAIIAN STYLE~~~ cardomain.com/memberpage/621985 cardomain.com/memberpage/643906 weedlesswillie.com 
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#2
11-18-2004, 03:28 PM
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Re: Throttlebody spacer
I recommend the airaid poweraid TBS. I never dynoed it, but im guessing it picked up 5-7hp and has increased hwy mpg by 1-2 on our fleet trucks
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#3
11-21-2004, 11:19 AM
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I just purchased one from TNT Peformance out of NY. Will let you know what kinds of performnace gains we get.
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1999 Chevy Tahoe LT 4 dr.<---got flooded out/totaled Now we have a 1999 Chevy Suburban LT, same color and interior as the Tahoe, just 22 inches longer, has the 3rd seat and a BIGGER gas tank 1995 Honda Passport 2 whl dr. 1992 Mazda Protege DX-5 spd. 2005 Keystone Outback 21RS ~~~HAWAIIAN STYLE~~~ cardomain.com/memberpage/621985 cardomain.com/memberpage/643906 weedlesswillie.com
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#4
01-15-2005, 08:08 AM
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spacer
I have the poweraid also. Seems to work OK. In my opinion, the two best power/MPG increases were the headers and a MSD 6A ignition with coil. I have tried many other things including an underive pulley set. Most were not very effective for the money and effort spent.
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#5
02-02-2005, 12:39 AM
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I also bought one from TNT last year after I bought my suburban and wanted to improve mileage. I think it improved city mileage by about 1 m.p.g. haven't really checked it highway since but I would assume that if it increased city mileage 1 it should increase highway 2-3 m.p.g.
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