Hello everyone, i come here to get enlightened with y'alls wisdom and knowledge, Im about to make a purchase of a 2009 FX4 6.4 with 64k miles its bone dry stock, i know the very first things i need to do is stud the truck and do deletes, but what tuner is better? H&S or Spartan, also what other things should i keep in mind or i should do to keep the truck reliable, thanks

 

I moved this down to the 6.4 forum.

You don't need to stud the truck in stock forum. A small HP increase is ok too.

but always tow in stock power.

Others will chime in.

 

I tuned my 2010 6.4 with a Spartan 40hp (lowest they offer) DPF delete, EGR off tune. Replaced the factory exhaust with a downpipe-back exhaust. Added an AirDog II fuel filter/pump to replace the factory lift pump.

I believe that encompasses the basic modifications that will reduce the biggest risks of premature engine failure on the 6.4L trucks (oil dilution and fuel system failures).

But no matter what you may decide to do to your truck in the way of mods, the absolute best thing you can do to improve reliability and longevity of these trucks is to become **** about maintenance. Watch your oil level and get an analysis when you change your oil (Blackstone labs is good). Drain the water out of your lift pump water separator weekly or at least monthly.

Lot of posts on this forum and members who will chime in on what to watch for.

Good luck.