Off road pipes needed for pulley swap on Super Stock/Redeye/Demon?

[DGatzby]

Cornerstone supplied bypass modified with V-Clamps to provide easy on and off install for preparing for track days or bringing it back to normal. It sounds so good without the Cats. Easy to bring back to normal for street use. Otherwise after fitting up the Cornerstone adaptor etc into the existing exhaust, it will become basically permanent.

 

[The Englishman]

Anyone gutted the stock cats?

 

[DGatzby]

Anyone gutted the stock cats?

This can happen if you run the car as it should be….

close enough to gutted?

 

[drag racer]

...plus cost you an engine

 

[The Englishman]

What a mess.

 

[DGatzby]

...plus cost you an engine

That is why besides a tune etc. I have such a good method of never letting that happen again.

 

[drag racer]

That V-band mod is a great idea! I need to file that away.

Did you work with Cornerstone on what length the flange is at, or did they kind of locate it close and you have to have the mating flange on OE pipe modified to suit?

 

[DGatzby]

That V-band mod is a great idea! I need to file that away.

Did you work with Cornerstone on what length the flange is at, or did they kind of locate it close and you have to have the mating flange on OE pipe modified to suit?

The best way is to let a good exhaust guy do it.
It has to be on the money and both the Cat and the by-pass need to be identical of course. Kind of tricky. Careful with the sensor threads if you exchange them.

Use these high quality units.