Stock 2001 7.3

[Jr.Watkins]

Is it absolutely nessasary to upgrade to a bigger exhaust when using the 110 hp tune?

Also i know that it reccomends not to tow when using a perfomance tune but is there a weight capacity? ( example: if i were using the 85 hp setting and towing a landscape trailer and a yamaha rhino which isnt more than 2000 lbs would that be ok or no?

[mikel]

The 85 tune is good for towing up to about 7000-8000 pounds, any more and you should monitor EGT.

The 100 tune can be used for daily driving if you want to try to get mileage out of it, and as long as you dont get on it too hard, the exhaust will not be 'necessary', but keep your foot connected to your brain