Having issues w/ the truck? Any insight, help?

[Jmoore1225]

I'm running gearhead Hot street, Truck has ARP studs, full EGR delete, 4 inch turbo back. Just had complete new longblock & injectors installed roughly 2,500 miles ago. Truck has been doing great!!

Just took a weekend trip to Lake Cumberland 1st long trip towing my boat 32 Fountain, it & trailer weighs in 10,000-12,000lbs. Could set the truck on cruise @ 70-75mph & never touch the pedal. Peak EGT's I seen were 1150's, boost mid 40's. No problems what so ever on the trip.

Well get home unhook the boat, leave the drive way roll into it a lil & notice way more smoke than usual for this tune. Have been playing w/ it a lil since, its sluggish out of the hole & lots of smoke compared to normal & boost will jump from 20ish straight to 40ish? Now driving on the highway everything seems perfectly normal, nothing out of the ordinary other than higher boost #'s when getting on it, I seen 57psi where the previous high I had seen was 47-48psi.

No codes, no puking, I'm clueless on what could cause this.

 

[blk350on20s]

Almost sounds like the hp turbo or vgt arent acting right. Sluggish down low but fine on the expressway points to it. Have you swapped tunes?

 

[White_monster]

What's ebp with key on engine off?

 

[Dzchey21]

Check exhaust back pressure key on engine off should be 14.7 at sea level with a dashdaq Ect if your using a h&s it should be 0 if it's reading high then you have a bad sensor

 

[blk350on20s]

Didnt think of that boys. Good call.

 

[Jmoore1225]

What's ebp with key on engine off?

Not sure will check, Picking up a map sensor tomorrow morning reading 100-110 or so w/ key off & shooting my alert light on, on the livewire.... Hopefully this is the fix!!!

 

[Jmoore1225]

Check exhaust back pressure key on engine off should be 14.7 at sea level with a dashdaq Ect if your using a h&s it should be 0 if it's reading high then you have a bad sensor

What should it read on the livewire?

 

[Jmoore1225]

Ttt

 

[jdgleason]

EBP tube clogged?

 

[Dzchey21]

Atmospheric pressure I think but it might read kpa...

Can you give me the units?

 

[Jmoore1225]

It's KPA & reading 100-105 for the map.... EBP is reading 25

 

[Dzchey21]

both read in kpa? They should be the same, looks like the map sensor might be the problem
are you getting and codes for turbo performance?

 

[MJ522]

On the DashDaq do you read from Exhaust Back Pressure(Absolute)? I'm having similiar issues with my truck but throwing these codes.

P2563 -Turbocharger Boost Control Position Sensor A Circuit Range/Performance
P006B, MAP - Exhaust Pressure Correlation

 

[Jmoore1225]

Wasn't the MAP... Will order EBP tomorrow, pulled tube off & it wasn't clogged!

 

[Jmoore1225]

Should I be checking for codes w/ it running or just the key on? Just the key on I'm getting no codes.... But I do have the engine light on the dash on!!