X15 questions

[Rawze]

(01-22-2021 )arch_stanton Wrote:  I just heard that the new cummins motors delivered in 2021 will not be able to have the HP and tongue ratings changed up or down due to the smog rules or at least the dealer can't I don't know if it can be done by the after market.

This is true. EPA is making it basically illegal to up the hp after the purchase of an engine to prevent higher exhaust output.

I have seen some articles on this and had made mention of it on the forum here a while back but can't find it at the moment.