backfire after header install

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Sep 7, 2006 | 06:00 PM

transambandit

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backfire after header install

just finished my pacesetter install/ory and borla install, i go and start it up and it runs fine, then i give it some gas and i get a backfire at around 5k rpms, anyone have any idea whats causing this? i had to take the pass side spark plug wires off to get some slack so one of them wouldnt touch the header, but i am not sure if i put them back in the right order, would this be the problem?

Sep 7, 2006 | 06:04 PM

red95ssclone

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Excess fuel is being burned after spark is shutoff. This happens alot when cats are removed. Unless it is detonating or studdering then you shouldnt worry

Sep 7, 2006 | 06:27 PM

transambandit

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if i tune it to run a little leaner would it get rid of the problem?

Sep 7, 2006 | 06:33 PM

itSSlowZ28

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tuning should do it. someone back me up on this, but i believe lt1's run a tad rich from the factory. if you haven't gotten a tune yet, it'd be a good time to get one anyways

Sep 7, 2006 | 07:33 PM

edlt1

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yeah
double check your order.

Mine popped really bad when I mixed up the 6 and 8 cylinder

Sep 7, 2006 | 07:51 PM

-PEPE-

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Quote:

Originally Posted by itSSlowZ28

tuning should do it. someone back me up on this, but i believe lt1's run a tad rich from the factory. if you haven't gotten a tune yet, it'd be a good time to get one anyways

I'm not sure if they run rich from the factory but mine was always rich in stock form, after headers it popped a little till the dyno tune.

Sep 7, 2006 | 08:06 PM

transambandit

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okay, can someone tell me the order the plugs are supposed to go into the distributor so i can see if im out of order, my manual doesnt say **** about it, preferably from top to bottom. thanks.