mustang_montana

anyone know why my car would be running so lean after putting on an o/r h pipe? i have the 02 sensors hooked up and the rear ones disabled. it just sorta dies at idle after a few minutes. i think i might have a small leak but nothing serious. thanks

mustang_montana

anyone?

Silver_Stallion

ya, check ur rpm's and see if they dropped any, i just got an O/R x-pipe and mine dropped 200 rpms, and didn the same thing, because it is so much more free flowing, if it has, just turn the idle screw back up to stock settings...around 850 or so....hope this helps

mustang_montana

my idle was at 900 on account of the tune i was using, so i changed it back to stock idle (800) and havent really tried it out much yet, i got some random 02sensors to plug into the holes so ill do that and see if that was the deal.

wildazme

so is this a problem that usually happens when you install an x or h pipe on our cars. im planning on getting an x pipe but dont want to cause other problems.

Tim37

mine idles strange too i think it is form lack of back preasure a friend of mine has a simlar set up but he has a dyno tune so his car runs fine.

mustang_montana

for me it was something to do with my tune mostly. i still have a pesky leak near the headers but its nothing bad. ill have to get toit later. i switched to my stock tune and it runs fine now. might just be cause the 02 sensors were getting weird readings.

Gregs68

https://mustangforums.com/m_587901/tm.htm

wildazme

I see that people are saying that this problem is happening after an hpipe install mainly. Basically what i want to know is, if i get an xpipe for my car am i gonna have to go and start messing with my idle adjustments and what not. im not having any problems with my car now and i want to know if im going to have any after the xpipe.

mustang_montana

....................completely different situation. thanks though. problem solved anyway