After a header install, is there a really good way to check for leaks that arent really obvious? How do I make sure its a good seal?

Second, I've got an HPP3 I used to change the gear ratio in my car. My question is should I put back the stock programming and then install the KM and then reprogram or is it okay to just put in the KM w/o taking out the programming first?

Thanks.

 

don't know about the headers, but i have a 94z myself and thinking of getting a flowmaster cat back? does urs sound good w/ just the muffler? any performance gains?

 

I can help you out on one of your ?s As far as checking for exhaust leak Start the car after its been started for a few hours you can put you hands right on the flanges and check for leaks before it gets do hot.Also look for black stains around the flange or primarys.

 

kevinCHOPTICON:

There is a heated debate on here about the Flowmaster muffler. If you do a search you will find one. I personally love the sound. You can tell a difference as soon as you start the car. When I first started it, I said "D**n!!" Some people say it doesnt flow as well as others but I could tell a noticeable difference in back pressure of the exhaust. To test, go down a hill and let off the gas. Once you get the muffler, there wont be as much back pressure. Its a matter of opinion. Some flow better, others sound better. Its up to what you want.

ChevyIron
Thanks for the input!

Anyone got anything on the KM question?

Thanks