I just finesh droping the Z6 in my 91 SI hatch, The car turns on in the first start and ride s good in low rpm but when I step on it start to act like if it was out of time could it because I used the 91 spark plug cables somebody HELP???

 

I forgot to tell u guy am runing 2 cats could that be the problems too..

 

why do you have 2 cats????

 

Wait, so you're saying you got a6 wires on a z6 head?

Please enlighten me because I was unable to do that.

Sounds to me like you've got a bad ign coil.

 

Because the car already had the stock one, I had headers but I sold them to a friend with an EK and he give me his that have the cat on top that way I have 2 cats..

 

No because the car turns on in the first try and runs right in low rpm I think its the A6 wires...

 

lol two cats on the Ef havn0t heard of that

 

Actually, two cats is somewhat common on a STD. Sometimes, when the close-coupled cat starts to die, people will have a cat welded under the body to pass emissions. This is commonly done because the close-coupled cat is expensive to replace.