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Old 11-19-2012, 01:26 PM   #1
tom.linacre
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Vance & Hines Fuel Management Product

I'm considering installing a nitros system on my '03 VRSCA. However, the factory rep at V & H tells me the installation of their Fuel Management product is a bitch. Anyone out there have experience with or suggestions on how to do this either with a V & H product or other to make it an easier install ?
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Old 11-20-2012, 10:16 AM   #2
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Since you have an '03 you need to upgrade to wideband O2 sensors and an ECM that functions with them. If you can weld & have basic hand tools to pull the pipes you can do it in a long afternoon. There is a video on Zippers about installing the bungs & sensors & hundreds of pages on setting up a Tmax or Twin Tech ECU. I think Rod has videos on this too.
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Old 11-20-2012, 11:10 AM   #3
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Buy one of those 189 exhausts. Has 02 bungs already. buy a tmax. plug and play. zipper has a map for nos. install nos. enjoy !
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Old 11-20-2012, 02:46 PM   #4
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i can get you one of these http://www.electronicjetkit.com/Harl...number=9120269 (for a better price than listed)with a trigger wire installed for when the N20 is activated it will add fuel. pm me if your interested.
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Old 11-24-2012, 02:29 PM   #5
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I don't doubt what you say is true but can you give me some understanding why I need a wideband O2 sensor and bungs in the exhaust? Thanks
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Old 11-24-2012, 02:31 PM   #6
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As always thanks buddy! Do you know where I can get a 189 exhaust?
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Old 11-24-2012, 03:34 PM   #7
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The stock ECU thru '06 comes with a fixed set of afr/ timing parameters. Subsequent to that, as is the case with almost every engine now on the planet, they are continuously adjusted thousands of times a second based upon input from the O2 sensors, wideband giving more data for better tuning. Make sense ?
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Old 11-24-2012, 10:57 PM   #8
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Thanks and it makes perfect sense. Would installing a H-D '07 or later O2 sensor and ECU solve the problem? Why are bungs necessary, what function do they perform ? More back pressure?
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Old 11-25-2012, 12:16 PM   #9
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The bungs are merely weld in threads so you can screw the O2 sensors into them, the restriction is minimal, even nitro cars use exhaust gas temp sensors ( slightly different). The stock ECU is not tuneable, for less $ get a Tmax ( or twin tech).
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Old 11-25-2012, 06:16 PM   #10
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Thanks for the info Doug you're a big help. All the best.
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