A question for all you 6.7 techs out there. I have a 2008 Dodge 2500, 6.7, DPF deleated, EGR, & EGR Cooler deleted, 5" exhaust from engine to tailpipe, chipped with Edge with Attitude. I do NOT hotrod, but on occassion pull heavy trailer 10K or larger. A nice gentleman from one of the site sponsors said I don't need to worry about fuel rail pressure unless I going to add lots of HP and TQ. I email H & S and they said, "Due to the weak pressure limiting valve we recommend installing a fuel rail plug or fuel rail shim kit on all 2007-2009 Dodge Trucks with the Cummins engine after installing any aftermarket tuning." I want to protect my engine and don't forsee adding anything else except a S & B air cleaner. "What should I do, Shim it- Plug it- or leave it alone". All help appreciated.

 

mine is stock but i have saw a couple trucks we had to plug.

 

My .02 shim it plugging is a bad idea when you plug the rail it cant release pressure meaning that if pressure spikes severely it can kill anything from the rail to the injectors. there is a blow off valve on the rail for a good reason (to protect the high pressure fuel system). shimming will allow the fuel release valve to relieve pressure it will just happen at a higher pressure. anyhow my .02 shim it a little more trouble but much safer

 

thats the exact words i got told when i get my truck back im getting my stock releif valve and shimming it just to have some give somwhere else and not my injectors or what ever else

 

with the mods your going to have i wouldnt worry about it the stock valve is just fine

 

I've been running my truck with the 175 HD tune with no problems on the stock relieve valve. I would just save my money and leave it alone if I were you.

 

Thanks SC Diesel. Makes me worry less, because I do turn it up occasionally.

 

Ya i have a 2011 and doing alot of research before i dump money but im told the stock valve is good for alot and i am not changing it out. Leave it alone no worries hs even told me to save the little money the plug or shims cost.

 

shim it very easily done

 

I agree I would shim it at the very least.