2009+ 5.7 Hemi Eagle

With regards to aftermarket tuning. In the case of Chevy stuff there are companies like HP tuners that offer nearly complete control over the Chevy computers which helps greatly with tuning, and probably simplifies putting an LS motor into a muscle car. HP Tuners promised Mopar support over three years ago, so far nothing. I've periodically checked into their forums, only to be disappointed.

What I find so interesting is that programmers can hack an iPhone in a week but, HP tuners can't hack the ECM for a Dodge in three years. :mumum:

I don't want to start rumors, but I really think that the Chevrolet factory engineers work far more closely with the aftermarket than do the Mopar engineers.

The reality is that if you are trying to gain full control over engine parameters you have to go with an aftermarket engine controller. Currently you have three choices: FAST, AEM (Mopar branded), or Megasquirt. (Big Stuff and Motec probably works or be made to work as well, though I have not confirmed it. The key to engine control computers is that they need just a few sensors, TPS, CLT, ATS, MAP, Camp Position and Crank Position.)

With the ability to lock out and or restrain the variable valve timing this greatly simplifies 09 and later motors installation into a classic muscle car.

Currently Megasquirt is testing VVT in beta.

The key benefit of VVT is a broader flatter torque curve. If you look at the torque curves on modern motors that have both variable valve timing and variable intake lengths, the torque curve is ruler flat from about 2K to redline. If you were to examine the torque curve between the 6.1 and 6.4 hemi, although there is only 45 HP difference between the two motors the 6.4 will spank the 6.1 because of the much broader and flatter torque curve, vs the peakier 6.1 hemi.

Regards,

Joe Dokes