Poor Performance after Engine Swap- JK

[rnsakanya]

I recently swapped my 2.5 CRD with a 2.8. The swap went with Injectors, Injector pump and pressure sensor from the 2.5. Unfortunatly i cant get enough power out of the 2.8. It wont go above 110 km/h! The turbo seems to be working fine and the fuel pressures are ok.
Can someone please help.

Richard

 

[Trailmaster]

Why did you swap in the 2.5 injectors? This will robb power from your engine, to make more power you need bigger injectors and pump. I don't know to much about your engine just know big diesels

 

[Jester32]

My guess is the injectors were swapped to keep the old PCM. What are you running for boost. No pressure leaks? Any smoke?

 

[rnsakanya]

My guess is the injectors were swapped to keep the old PCM. What are you running for boost. No pressure leaks? Any smoke?

You are right. I swapped the Injectors and pump to keep the old PCM. I noticed two sensors on the camshaft position which i assumed to be camshaft sensors. One is located in front and the other behind, just below the cylinder head. After the swap, I left the back sensor hanging since it did not have a hooking provision on the 2.5 harness. Could this be the reason for poor performance?
There are no pressure leaks, but i noticed a bit of smoke. I suppose its because i really have to push down on the gas pedal to get it moving faster.
Kindly explain further what you mean by "running for boost"

Best,
Richard

 

[rnsakanya]

My guess is the injectors were swapped to keep the old PCM. What are you running for boost. No pressure leaks? Any smoke?

I think i know what you mean by boost. Am using the turbo that came with the 2.8 engine. It gives a very strong boost.
Would a slight obstruction of the exhaust outlet affect performance? I say this because we had to do a small modification on the exhaust. The exhaust outlet is a bit narrow.

 

[82cj7son]

do you have a boost pressure gauge? if not, I'd make sure you don't need one... and older injectors would be a problem. anytime you add a power adder you need more fuel and that usually means bigger injectors

 

[Jester32]

Since the turbo is run by exhaust it could limit turbo speed if it's enough of a restriction. Do you have any dtcs. I would reset all the fuel adapts and try to get it to learn the new motor. If not it may require injector or pump modification