I have recently got a sct custom tune tuned for the mods in my sig wich includes an Egr delete... Now im wondering if it would hurt if i waited to do the Egr delete or if i had just not installed it period, thanks

 

If your state has emissions testing... don't do it.

 

Michigan... We dont.. But im wondering where im tuned for the delete if it will bother things if i dont install it or just wait a bit to do so