I've been watching my rail pressure since I have a gauge now and noticed I only get about 16000 psi under 2000 RPM. I only get 22-23 k at redline. I'm fine with 23k but I want that pressure before 3000 RPM. At idle and cruise rail pressure are normal, just not at WOT below 3000 RPM. Would messing with the rail pressure settings on the Smarty help? I only run the Smarty on level 5.

 

Are you running stock injectors and cp3?

 

Truck is all stock minus the clutch and Smarty.

 

Are you just running the stock smarty tune?

 

I have the latest Revo update. It's not the TNT.

 

Injectors were replaced just before I bought the truck about 15000 miles ago.

 

I'm gonna piggy back on my post. I was finally about to rig up my fuel pressure gauge. I am seeing 8-8.5 psi at idle and around 2 at WOT. Cruising is around 4-5 psi. Fuel filter was changed about 1000 miles ago. Do these numbers seem right or should I be worried? I would search for the answer, but the search function isn't working at the moment for me.

 

That is about right. If you have an 03-04.5 with the pump on the back of the filter expect around 8psi at idle and as long as it dosen't drop to 0psi at WOT you should be O.K. If you have an intank LP or a truck that is an 05-07 you will see between 8-10psi at idle and if should only drop down to about 4psi at WOT.

 

I have the lift pump on the back of the fuel canister. That was the answer I was looking for. Thanks.

 

I've been watching mine for about a week now and on stock I am running about 5K at idle, 7-8K on cruise, 10-12K on hills. Once I put the Edge on Tow my rail pressure went to 7-8K at idle, 14-16K on cruise, 20K on up pulling hils.

 

At idle I'm around 5-6k. Cruising is around 7-8k. Those numbers sound normal to me. I just thought my WOT FRP was low under 2500 RPM.

 

Without hard data to back it up, I've been observing much lower cruising rail pressure in cold weather than warm, I believe the ECM is responsible for that, so its something to keep in mind.