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So the bypass basically is whats letting us close the valve completely without problems.

Guys just want to double check, are we sure that the flow is not required for something else in the engine besides the heater core? Like putting too much stress on overall system pressure ?

I am still doing the valve thing... I prefer not to put any stress on the hose long term.

Yes, its a bit strange the TSB has been out since September 18, that means FCA knew about the problem, still my truck is a late February 19 build and the AC performance is still very poor. This might mean the fix is complicated to apply, even in current production.

Yedi, the ASD doesn't go crazy with this setup trying to cancel the exhaust sound? Also at WOT is it much louder than stock? Like turn heads loud?

We are getting near 100s where I live, and the truck is usable only if you have not been parked under the sun for too long 20+ minutes, when sitting longer at these temps you really have to crank the A/C and it takes a lot to cool the cabin and you have to have it full blast. I never gets cold...

For those who have done this mod, is sound quality improved when disabling ANC?

So if the evaporator or core freezes if you shut off the valve completely... why is it a problem? It should have antifreeze on it so no way to freeze that, you guys mean the evaporator itself can get very cold?

Hello Dennis When connecting the subs directly to the OEM HK amp how many ohms were you running and was the power output decent? Also what puzzles me is that you were getting clipping, what EQ settings and volume level did you have when the OEM amp started to clip?

Yes Silver you are right, but trying to find out if its maybe something I can fix myself, if I let them do it I know I will get back a pretty scratched interior.

Hello guys, anybody else had this happen to them?

Will do and thank you Ray!

The only hack here is the ridiculous software update the FCA did and doesnt work, Just ordered the shutoff valve to do the “Ray Mod”

Also wondering if there is a return line from the heater core that the engine is expecting to receive to function properly.

Hello Ray, When opening 1/2 a turn did you start to get again different temps on driver and passenger side? Thanks so much for your great contribution! JC

Hello OP... How arw you still liking your setup? Any air gushing sound at wot? And how much louder would you consider it % wise vs stock? I take it its DODNG24 the part number for this setup right? Thanks! JC

Well there you go... Ray, can this hold up in the long term or it might present issues? Thanks a lot for your work! JC

Thanks Steve, I need to check other DTC B147913, where can I get full info on DTCs from these trucks? Thanks again, JC

Hello Guys... I am trying to figure out exactly where the open circuit is for this DTC: Faults found. B1DB8 ___________________ Error code: B1DB8 No code description found Short circuit to ground/Open circuit Last test completed positively Error intermittent Failure warning lamp 'ON': Not...

took it to the dealership, they are clueless and no codes stored.