I've just helped my friend trying to install his test pipes to his car. As we all know our cars stock cats are a %#$@% to get loose. Now we were able to install one test pipe but left the other one b/c time was a factor. Will leaving only one test pipe installed cause any kind of damage to his car??? Much appreciated.

 

I don't think so.

 

All depends on how long you leave it that way and how hard you drive it before it is changed but there really is no telling how it will effect the car and I don't recommend it at all.

 

hmmmmm... 3 cylinders working more freely than the other three?

 

You are running one OEM catelitic converter and one test pipe? And the oxygen sensors are installed. The left and right banks operate separately. I see no problem.

 

you will be OK, we have left bank and right bank o2 wideband sensors on our cars that will compensate for the change in a/f ratio. try to get the "hard to get loose bolt" by removing the intake and use a 3' extension to remove the bolt. look throught the do it yourself section for pics.