bassani X pipe install help

[Serper3]

i replaced my old x pipe because my cat was messed up. now, when the car is idling its ok but if you rev it or just driving in general it sounds kinda bad like their is something wrong maybe a leak etc.. one of the things i think it could be, is the passanger side header meeting the x pipe. their is a metal ring gasket that i had issues with getting ligned up properly. when i did get it done it looked ok but i think it might have shifted with all the tightening etc... i guess my question is, could this be the problem? could i also have a leak somewhere else like where the x meets the cat back? here is the main thing, if its the gasket, whats a good way to assure that it sits in the right place as ur tightening it up. how would u guys recomend taking the x pipe off now? i am assuming i have to take off the 4 rear blots connecting x pipe to cat back, undo all the header bolts etc..
thanks alot for the help, i am really not sure how to get this gasket in their right, i am also not sure if i even need it etc.. if some people who did this before could help me out, that would really help me out alot.
i replaced the whole midpipe fairly easily but that gasket deffinately gave me the most amount of trouble...
once again thanks alot for any advice..

 

[Roger_4.6_96]

I would get underneath it start her up and have friend rev it while you feel for air.

 

[Serper3]

hmmm i didnt think of this before.... i was just talking to a guy i know and he suggested using copper rtv as a gasket and not using the metal one? do u guys think this is ok to do?

 

[Roger_4.6_96]

Basically not much of a differnece. Just dont use paper one they dont last very long.

 

[Serper3]

Basically not much of a differnece. Just dont use paper one they dont last very long.

the stuff i am thinking of getting is kinda like a paste it will come in a tube and i could squeeze it out right onto the header or x pipe....

 

[Serper3]

ok, i think i am really screwed... my check engine light came on today... could this be possibly because i have a leak? i also replaced one of my 02 sensors in the back because i couldnt get the old one out of the x pipe that shouldnt have anything to do with it though right? should i reset the ecu? i really donno what to do, i will try to fix the gasket issue on sunday. thanks alot in advance for any help...

 

[Serper3]

anyone......?
please???

 

[Roger_4.6_96]

Off road X pipe will make your check engine light come on if you dont have mil eliminators or custom tune.

 

[03ghoststang]

some high flow cats will make the CEL go on so you will need teh milenators

 

[DocG]

Dunno if you put cats or O/R on....but do unhook the battery for 20 minutes to reset things. The changes in readings on your 02's could have messed with some of the computers settings causing it to run and sound a little off.

 

[drew_shipley]

Dunno if you put cats or O/R on....but do unhook the battery for 20 minutes to reset things. The changes in readings on your 02's could have messed with some of the computers settings causing it to run and sound a little off.

If that doesn't fix things you can always stop by autozone and have a free OBD II reading to see what's wrong. At least it would point you in the right direction.

 

[HoustonGT]

Don't worry about the check engine light, its just because you no longer have catalytic converters. It doesn't hurt the car or performance in any way, so simply get the leak fixed and you're good to go

BTW, buy some MIL Eliminators to get rid of that check engine light and plug them right into the rear o2 sensor connections.

 

[Serper3]

i am really confused. i understand if i u get x pipe u need MILS but i already had an x pipe and no check engine light ever came on.... i did replace one of the 02 sensors because i couldnt get it out of the x pipe but i plugged the harness where the old 02 sensor whent so it shouldnt make a difference right? i am confused because i had x pipe before and didnt have check engine light on.. could me changing the 02 sensor cause the light? i also ran the car for maybe 15 seconds with just the first pipes on, not the whole x pipe i think this might have something to do with it also? could the leak cause the light to go on too? thanks alot for all the imput i am really in need of advice because i am somewhat confsued because i think i already have the mils since i had the x and no check engine light was ever on since i had the car...(i baught car with x pipe on it already...)