I recently put Art test pipes on my 2008 G35 Sedan. After the exhaust shop put on the Art test pipes my car seemed to run fine, but the next day it would not start. The car cranks and all dash lights are on, but the car would not start. The test pipe install shouldn't have caused this, but it seems kind of ironic how my car would not start after this mod. I checked to see if all sensors were hooked up properly and everything looks good. I tried to get a jump and reset my battery, and still my car would not start. I had my vehicle towed to Infiniti today, and they'll take a look at it on Monday. Hopefully Infiniti doesn't say that this issue was caused by my test pipes!

 

It could have fouled out the o2 sensors. Was it cranking over but not starting?

 

Yes, it was cranking, but would not start. I had my fast intentions HFC's on for about 20k miles with no issues before I put the Art test pipes on. I hope this is an easy fix though.