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Author Message   Azrael_cervale Posted on Wednesday, April 11, 2012 - 07:05 pm:        So in a minor accident my header got destroyed, but I found a new one. After installing the header following the manual as much as I could (Don't see how you can attach the muffler first) I got everything together. At first it wouldn't idle at all and barely started but I did a TPS reset and got that part squared, However it's backfiring on while idling. I'm assuming The new header isn't installed right but I'm not sure what to do to fix the issue. If anyone has a good procedure for installing one please let me know. I did buy an extra set of exhaust gaskets if I need them. Thanks in advance.   Devil_car Posted on Wednesday, April 11, 2012 - 07:37 pm:        Did you by chance forget to reattach the connector for your O2 sensor? Is the O2 sensor fully threaded into the header?   Azrael_cervale Posted on Wednesday, April 11, 2012 - 08:00 pm:        I'll double check both but I believe they are connected and in.   Argentcorvid Posted on Wednesday, April 11, 2012 - 09:23 pm:        quote: I did buy an extra set of exhaust gaskets if I need them. you didn't install them though? I'd do that. and make sure that the old ones are out of there.   01x1buell Posted on Wednesday, April 11, 2012 - 09:25 pm:        the exhaust gaskets are a nice easy thing to replace( put them in the freezer) to shrink them,which will help install them.   Azrael_cervale Posted on Wednesday, April 11, 2012 - 09:37 pm:        No I installed a new set when I put in the header, but I bought two sets so i'd have a spare set.   01x1buell Posted on Wednesday, April 11, 2012 - 09:50 pm:        did you do anything else or just ther header?? try shutting off the o2 with ecmspy if you have it and see how it runs.   Azrael_cervale Posted on Wednesday, April 11, 2012 - 10:00 pm:        Just replaced the header, i'll try shutting off the O2.   Ratbuell Posted on Wednesday, April 11, 2012 - 10:40 pm:        I can't remember offhand, but the DDFI may need to "learn". Depending how bad the old header was (smashed, restricted, etc), it may have recalibrated itself and needs to learn its way back to stock. DDFI-II on my Ulysses wants to see a 5-10 minute steady-throttle ride (cruising speed) to re-learn baselines. And to save yourself cracked header problems...LOOSEN EVERYTHING. Heads. Hangars. Muffler clamp. Muffler hangars. LOOSE, so you can wiggle every single exhaust component. Then tighten the flanges at the heads. Then wiggle everything. Then the collector hangar. Then wiggle everything. Then the muffler clamp. Then wiggle everything. Then the front muffler hangar. Then wiggle everything. Then the rear hangar.   Azrael_cervale Posted on Friday, April 13, 2012 - 11:21 pm:        Took it out, rode it and everything calmed down. Had to do another tps reset and drop the idle back down but its running great now.

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