2003 5.7

[Justin Reinauer]

Looking for suggestions on the 03 performance. I have done some work thus far for upgrades, I’m aware you can’t tune a 03 Hemi, only Place I’ve heard of that van is BG performance, but that’s a mail out PCM for tuning,

so what should I do? Haha.

should I do a swap for a newer ecu so it can get a dyno tune? Or mail
Out the pcm.

 

[Redtruck-VA]

I bought my 03 new and went through all the different tuning strategies as they became available. I finally swapped to the 05 pcm and with HP Tuning I say it is the final solution.

 

[HemiLonestar]

Comp 260 + Superchips 91 tune if you don't wanna change anything
2005 PCM/harness swap if you wanna have real fun