Riddick
Well-Known Member
Spot on. I have a stock truck except 37's, level and a Banks Ram Air Intake elbow and am throwing P0402 codes. Likely caused by the ram but now my confidence is shattered when towing across state lines! I just want reliability like I had with my 5.9 and previous 6.7. Will exchange that for the warranty at this point. And it seems like a lot of folks are getting P0402 codes at around 10k-12k miles, which is where I'm at.
I am a fan of the aftermarket air intake kits especially the S&B unit. The fact many trucks are throwing codes is proof the engine is breathing better but I wont install anything until we can tune the ECU to account for the additional air.
I have reached out to EFI Live numerous times and always receive a generic answer of "currently no support for the 22s and no ETA if support will be released".
Also, I contacted HP tuners and they have always been quick to reply. Again, no support but they do have their RAM engineers working on it.
I have even contacted some well known shops and they assure me they are working the issue daily but no news yet. According to some shops, in some cases when they are trying to flash the ECU it can brick the ECU which instantly transforms it into an expensive paper weight.
In my opinion I think someone will figure out a way to tune these trucks but it wont be the traditional way with your commonly used programmers we use on the pre 22 trucks. The newer Fords are the same way, newer F-150s and Mustangs are not able to be tuned either. If you have time look into C8 Corvette tuning, it took them a couple of years to develop but they finally cracked it. However, its not your normal GM shops using HP tuners to tune them. Most of these "tuners" cost a few thousand dollars........ very similar to the new duramax platforms. So again, it will come but dont be surprised if it cost in upwards of 3-4k dollars.