I just emailed my order form, with the stock 87 tow/custom 87 perf/custom 93 perf

My truck is an 04 FX4 (non-heritage) and I'm just wondering if these were the best tunes to go with. I have K&N CAI, Flowmaster SI/DO, and troyer pullies. I do city-highway mixed driving, with somewhat of a lead foot. Any input would be appreciated. I wont even be able to send them my hex code for about 3 weeks, since I'm still in Iraq, so I guess there's still time to edit my order if needed.

I've searched on the subject, but couldn't find much

 

If you're looking for performance over gas mileage, this was the way to go. If you want better fuel economy, you might consider an economy tune.

 

I think I'll be fine with that. What's the difference between 91 & 93?

 

the 93 will give you more HP....i went with the same ones you are waiting on and im very happy with my tunes........my daily tune is the 87 perf(run it with 91 and youll get more power)........87 tow really changes the way your trans acts and the 93 makes your truck get up and go....

 

Awesome. I'm looking forward to getting them. Sucks it's going to take a while though. I understand the waiting list. And not being able to give them the Hex until I get home from Iraq makes it worse.

 

I have tunes from www.5startuning.com and like those really well. they add power as well as fuel mileage.

BTW, what do you think of your underdrive pulleys? worthwhile mod?

 

Haven't put the pullies on yet. I have soooo much stuff to install when I get home from Iraq. Pretty much all I had when I was still home was the intake and the flowmasters.

 

where was the "economy" option??