is anyone able to tune the hemis yet? i was wanting to cam my 03 ram but not if its going to run poorly. i was wanting the 273 comp cam but i have heard of it not wanting to idle with that cam and just wanting to know my options. thanks for any help

 

you can use the psc1-003 for fuel map tuning to use the cam, but no there is no "tuning" available.

 

That cam is pretty big to use the map voltage tuning aids IMO. B&G can reduce your fuel injector pulse width at idle and through part throttle transition. They have a program for the KRC220 cam and I've heard folks have used that on the 273 cam and it's greatly helped but not made it 100%. The KRC 220 cam with B&G flash is a good performer. However, this past weekend, one of our buds with a custom KRC 210 cam and Hemishop heads pounded out a 12.88 at 107mph n/a.

 

Yes, Platinum Hemi's Truck Is Sick Man

 

I'd go with the comp 268 instead of the 273. The 273 has some retard built in for valve clearance which is not what you want on a truck. It's also a pain to tune even with a piggyback you may still need a BG flash to get it to idle right. The 268 is a proven performer and so far from what I've seen there is not a better cam out currently.

 

The 260 is great for low end torque, but for racing I'd go with the 268 like the others have said. It's the one I'll eventually get.