I had taken off my old X-pipe and reinstalled many times without any issues as long as I changed that gasket. I switched from my old X pipe to a UPR X pipe and now I can't get the damn thing to seal up. I used a new gasket, and it leaked. I took the gasket out and flipped it around so that the part that sticks out a little more was facing down, and it sealed better. I figured it would seal if I just got a new uncrushed gasket in there and place it with the part that sticks out further against the midpipe the first time. Nope. I can still feel air coming out from the junction if I stick my hand up there. I measured the crushed gasket that didn't seal the first time and it was barely different from the brand new gasket (I'm talking .160" to .174"). Could I try smearing some copper RTV on both sides of the gasket and reinstalling?
I should also note that I have an ongoing misfire problem due to my cop swap going down the wrong road. First I had a misfire and noticed that the two connectors that plug into the factory harness had broken plastic tabs holding the spades in, and when I pushed the two connectors together the wires would just stick out. So I got new connectors and swapped the wires in and clicked it all together no problem. I started it up and it was great. 26 miles later it was misfiring so bad I had to tow it. So I ohmed all the coils out and found one coil to read OFL on the secondary circuit, so I threw a coil in from Advanced Auto. It ran way better but still had a miss. The car popped a code on the second start up (not sure what it was for though to be honest). I returned that coil and just ordered all new FRPP coils. Hopefully that fixes it. However, the exhaust gasket should still be sealing fine with a misfire you'd think, right?
Any experiences or tips with getting that midpipe to seal would be appreciated.
Edit: I should also note that I took a scotch brite pad to both the exhaust manifold flange and the midpipe flange to make sure there was not debris getting in the way.
I should also note that I have an ongoing misfire problem due to my cop swap going down the wrong road. First I had a misfire and noticed that the two connectors that plug into the factory harness had broken plastic tabs holding the spades in, and when I pushed the two connectors together the wires would just stick out. So I got new connectors and swapped the wires in and clicked it all together no problem. I started it up and it was great. 26 miles later it was misfiring so bad I had to tow it. So I ohmed all the coils out and found one coil to read OFL on the secondary circuit, so I threw a coil in from Advanced Auto. It ran way better but still had a miss. The car popped a code on the second start up (not sure what it was for though to be honest). I returned that coil and just ordered all new FRPP coils. Hopefully that fixes it. However, the exhaust gasket should still be sealing fine with a misfire you'd think, right?
Any experiences or tips with getting that midpipe to seal would be appreciated.
Edit: I should also note that I took a scotch brite pad to both the exhaust manifold flange and the midpipe flange to make sure there was not debris getting in the way.
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