AnglicoGT98

i'm having a problem with my newly installed exhaust system. i have a '98 gt that i just put a MAC off roadh-pipe and a MAC axle back exhaust(1 muffler on each side) on. i bought new up stream o2 sensors and put them in, but i'm still getting some nasty lag....the car wont even accelerate well...and it starts shaking in low and upwards of 3k RPM...i was told about the MIL eliminators but my check engine light isnt on...i know that it is not anything internal because i didnt have this problem until i changed my pipes...here is everything i have done to trouble shoot this...someone HELP!!

-new o2 sensors, disconnected the battery and waited, i have the MIL kit comming just incase and i'm gonna try and see what a Diablo can help me do...

if anyone has ANY suggestions please let me know...i'm starting to get pissed! thanx


1998 mustang gt
-80mm K2 cold air intake
-80mm pro products throttle body
-80mm C&L plenum
-MAC off road h-pipe
-MAC axle back exhaust

7arpad7

Welcome to the forums... your problem is a strange one... I don't have a clue as to why you would have a problem like that, butposting to get this back on the front page... Surely there is someone out there that can give you a good answer...

GTMustang6921

yeah..bring this to the top