You can do this if you want to waste fuel and cool down your exhaust, because that's all it'll do. Richening it up and pulling timing is going to drop your EGT's, which is exactly what he doesn't want to do.

 

Adding fuel and retarding timing will cause the fuel to burn while the exhaust valve is still open, causing it to burn in the tailpipe thus heating everything up. It's the same principle that rally cars use to spool big *** turbos with tiny engines with manual transmissions.

I've done this many times as have others. Running the engine lean will just burn up the rings and get the truck hot in staging.

 

His concern is the truck cooling down in the staging lanes, and the turbo is 6+ feet away from the engine.

I understand what you are saying, and that's fine to do on the line. I wouldn't do that while in staging though. I'm not saying running a 17.0 AFR, but a 15.3-15.5 vs a 14.7 isn't going to hurt it.

 

Actually this was his original question/concern.

 

And I was reading from this. We are looking at two different things.

 

Der?!? I'll shut up now.

 

Don't feel so bad. Someone was posting up in the Duramax forums about a cam swap gone wrong, I stated that it was WAY TOO much duration for the engine, not realizing it was a diesel. I felt like I had for brains.

 

Sorry, didn't mean to cause an issue but I appreciate all of the feedback!!

 

No problem. I'm having an off day today. Hope you got at least a laugh out of it all.

 

Hey Parish, ho wmuch of a decrease in underhood temps did you see with blankets? Thanks