I currently have RV275 injectors. Looking to go bigger. Everyone says
not to make the mistake of going to small. I was thinking of going with
the Mach 2 instead of the Mach 1.6 I have a stock turbo and tow a
7000# travel trailer. On the upside I have the 6 speed tranny ,so I can down
shift.On the down side I have 3.55 rear end and the trailer sits high and
has a large frontal area that creates quite alot of wind resistance.Also ,I
will be towing over the sierras with some passes at 7000' Will this put me at
325 - 350 H.P. with my Smarty and other mods ?

 

Subscribing.

 

I tow with the Mach 1.6 and Smarty. Haven't had any problems with egt's.
3.55 gears and a 5 speed, stock turbo, camper is around 10,000#
I tow with Smarty on 3 or 5
Last time I towed I set the Smarty on 3 comp off and never got egt's over 1,000 but I'm not no where near 7,000' elevation. I think you would be ok with the Mach 2.0

 

The only issue you might run into is weak clutch/ high egt's. Having to upgrade the clutch is give-in whenever modding a truck though. The EGT's probably won't be too terrible of an issue until you're towing and putting your truck under a heavy load.

 

I already upgraded to the Southbend OFE , I learned my
lesson with the RV275 injectors and the Smarty