[DrBlockHed]

Originally Posted by Markoz28

Exactly this. ^


Car is garaged so upon first start up (cold start) it’s pretty loud and after a while it chills out. It puts a kinda obnoxious smile on my face which my wife thinks is hilarious.

When cruising with the wife I leave NPP on touring. When solo it opened to track.

Sounds like the perfect setup. Wife doesn’t like loud exhaust, but I prefer it.

Thanks!

[Bangkok_ZL1]

Originally Posted by Z OH 6

Keeping the stock cats?

If I delete the cats but keep the rest stock would I have to retune the brains? I deleted the cat on my last sportscar, all 35-40 pounds of it, then had a New ECU
tuned for the car and it was amazing!!! what a difference it made, especially with low end response. But the ZL1 I have no idea.