defueling at 210 deg.

[farmer]

Truck runs fine til. temp gage hits 210 deg., Then is like it goes back to stock tune. Just wondering if anyone has heard of this. Thanks

[DmaxHawk]

What type of tune are you running? DSP5, DSP2, single flash? What engine do you have? I assume you have an LB7?

[farmer]

I have a lb7 engine, This is a single flash. The tune is bullydog pup, that I added fuel to. To make it smoke alittle

[farmer]

I have engine codes,po234 turbo eng. overboost, po089 fuel pressure regulator 1 performance, po101 mass air flow senser performance. Just thought this would help out.

[DmaxHawk]

I havent heard of anything like that. I would try copy and pasting all the fuel and boost tables from the bullydog onto your stock tune and try that.

[mvnvltn]

The 234 over boost code will cause defuel. Go to C0301 and set these to not reported. That should solve the "Limited Power" issue. I had the same problem when I went to a different turbo. It may not be necessary for all 4, but that's what worked for me.

[farmer]

Thanks I tried that and it works fine.Thanks for all your help.

[mvnvltn]

are you running a K&N type filter?

[DmaxHawk]

are you running a K&N type filter?

Good question, or any other oil-type filter

[mvnvltn]

Are you using a lift pump? What is your max inj pulse?