HP gain

[o96r]

Hello everyone,

I’m trying to “turn up” my ISX and I was told This is the place to ask.

Shops around me won’t touch it because of emissions. I’m not trying to mess with emissions just looking for a little more power. Finally they Dealer said they could to it but after further research Cummins told them there is no available update/tune for my engine “because it was a very specific built engine.” Guy at the dealer said he’s never seen or heard of something like this. They were willing to do the tune of Cummins would provide it. I was wondering if anyone else has had this issue? Sorry for the ignorance I come from older cats and detroits.

Info given to me from dealer….


2004 signature series Cm870

Serial # 79052701

450hp
1550 tq

Thanks,