little rough idle in gear. now backfire with tr6's
11-19-2007, 01:00 PM
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little rough idle in gear. now backfire with tr6's i got my wet kit hooked up but havnt shot it yet. im going to start with the 75 shot because i cant find the 50 jets. i have a fpss also. my car hasnt thrown a code, but when in gear can run a little rough. i really dont even see the rpms move. i dont know if its slight misfire or maybe the a/f. but it seems like since i put my TR6's in gaped at .38 it has not really a backfire, but more ecaust back pressure, and popping. what could this be? also the TR55's i pulled out looked white around the bend and almost up to the threads. isnt this a sign im lean? what should i do to fix these problems? im probably going to get it tuned but would like to fix anything in advance, and possibly test the system befor going. thanks. 01 A4 ws.6 with cut-out and lid.
11-19-2007, 05:52 PM
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You would think so. My buddy changed the plugs on his C5. He pulled a wire back just far enough to where it was making the plug spark intermittently. He had that exhaust "pop" until he fixed the wire. 
11-19-2007, 08:49 PM
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i got my wet kit hooked up but havnt shot it yet. im going to start with the 75 shot because i cant find the 50 jets. i have a fpss also. my car hasnt thrown a code, but when in gear can run a little rough. i really dont even see the rpms move. i dont know if its slight misfire or maybe the a/f. but it seems like since i put my TR6's in gaped at .38 it has not really a backfire, but more ecaust back pressure, and popping. what could this be? also the TR55's i pulled out looked white around the bend and almost up to the threads. isnt this a sign im lean? what should i do to fix these problems? im probably going to get it tuned but would like to fix anything in advance, and possibly test the system befor going. thanks. 01 A4 ws.6 with cut-out and lid.
11-20-2007, 07:03 PM
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well it had a rougher idle before i changed it so any help with this would be appreciated. i also havnt changed the last plug that u have to get under the car for. when i change that maybe the backfire will go away. anything else on the idle?
11-21-2007, 01:11 AM
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If you're going to change 7 plugs, change 8....
Also, you say it had a rough idle BEFORE the plug install? If so, then what difference did the plugs make in this post? Sorry, but I'm a bit confused...
-Will
Also, you say it had a rough idle BEFORE the plug install? If so, then what difference did the plugs make in this post? Sorry, but I'm a bit confused...
-Will
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11-24-2007, 01:37 PM
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i changed the plugs only to install the nitrous. i had good plugs in. i changed 7 at the time because i didn't have a jack. i changed the last one of course by now. i thought the plugs were making it pop but i think its just some back pressure because of the cut-out. i think the only problem now is the slight rough idle.
