Isx15 smoking! Help

I hauled 105,500 with 450hp for years and it did just fine here in the northwest.

 

Keep us posted.

 

We ran a 475 C-15 in a tridrive/tridem trailer configuration grossing about 118k in the BC mountains. I think you're kidding yourself that 450 is inadequate for a measly 84k. The 475 wasn't the quickest up the hill but it held its own. The guy with the Signature 600 with the same weight and setup could pull the hills about a half gear higher.

 

Most drivers couldn't feel the difference between a 475 vs a 550. 475 pre-low NOx beats a 550 low NOx any day of the week.

 

This was a stock MBN bridge engine too.

 

That could be the problem someone hacked up the tune. But why da #### u assuming id show off? Dont come here sayin #### like that dont got non good to say dont post. Hater

 

Yep I’m a hater. But I’m still trucking.

 

Im leaning toward the c15 ill keep ya posted thanks for guiding me really appreciate it. Would i need to change any gear ratio to make c15 be perfect? Or would it work out with what i have right now, i have 3:55 and 18 speed

 

They'll work fine until you get some money back in your pocket and the truck's pocket.

 

Thanks!