Threw P1247 Code

[ski_m]

I have a 2000 F250 just threw a P1247 Code which I believe to be related to my leak in turbo exhaust up pipes which my mechanic identified for me not that long ago. I am going to replace the up pipe gaskets and any pipes if they are gone. Would this fix my issue. Right now full throttle I dont break 10 psi and while cruising around 45 i am lucky to get 2 PSI. I have a 4000 mile road trip coming up in June any help or pointers would be great. Right now I struggle to get 10 mpg which I think is also related to my issue.

Second question, I came across a tuner left in my truck when I bought it, I currently run an SCT X3 with an aggressive street tune from Innovative diesel which is what I was recommended for a good daily driver. The other tuner I came across is a Superchips MAX micro tuner. It has 2 tow tunes and an agg street. Which is better, planning on selling which ever isnt? thanks

[ttyR2]

Even under full throttle, on the flat and level, I see around 8~10psi max. On a good hill with the engine singing around 2500rpm, I'll see up to 18psi. Mine is all stock other than a 6637 filter.

Just for reference.

[dentexpowerstroke]

Check the map line for any cracks or rips in it. Check for boost leaks. If your up pipes are leaking it could cause it, personally I've never see an up pipe leak that bad to throw a code, not saying it isn't possible. Where are you reading your boost from?

[TheFordman87]

Sct is the way to go especially since its been custom tuned for your truck. I say keep that one and sell the superchip

[ski_m]

I will check the MAP line. As far as where my boost is read I am not sure, guages were existing when I bought it. Thanks for the info on the tuner. This is my first diesel so I am figuring it out as I go.

[ski_m]

Can I get a little info on identifying the MAP line. I have heard it starts at intake. First time working with Garret Turbos and Powerstroke engines. What is a typical reading on boost for 7.3l tuned diesel. Idle, cruising, and accelerate.

[TheFordman87]

With a tuner I have heard people saying they hit 30 psi all the way to 40 psi at WOT

[dentexpowerstroke]

There is a little black box looking thing above the hvac unit on the passenger side that has a rubber house and a plug going to it. If the truck was reading boost off the map sensor I'd say its possible that the map line is ripped and bleeding off a lot of boost. Check all your intake boots for rips. My boost has been tagging 26psi with my wastegate stuck open and stage 2s. Fixed it today and i can hit 10psi on light acceleration.