The quest for better fuel mileage has begun
 

I had the 4" exhaust installed Thursday. I installed the AIS Friday and I'll soon be getting a economy tune from Mike at 5 Star so I hope to be seeing some better MPG. I'm also trying OptiLube and I like it so far it has some of the benefits as 2 cycle as far as quiting the motor and has a slightly better HFRR rating than the 2 cycle. It's a lot less expensive to use too. We will see how this turns out.

David

PS, I'll get the 6637 back to you Mike. Thanks very much for the use.

David

Hi David
Hope your staying dry this evening. LOL.... The AIS is a very good unit. Thats what I ended up installing on my previous 7.3L I liked it a lot.

talk to you soon
Mike

David How go's the quest for better MPG?

Getting better, but not where I would like to be. Next step, tuner. Got to let the wallet recover a little though. I also need to get your 6637 back to you. Again, thanks for the trial run with it.

I planned to check the MPG on a trip to Hickory this past weekend but I had to pull a trailer at the last minute so I didn't even check it.

When I checked it the tank before I was up about 1.2 MPG. So I'm headed in the right direction anyway.

David

I had driven past your house last night on the way home and seen the beast in the drive way is why i was inquiring....Thanks for the feedback, no hurry on the 6637 it was collecting dust any ways. Did you ever look into a EGT gauge yet? And how do you like the exhaust?..

I have looked at some EGT gauges but no decision. Suggestions? I noticed the exhaust has a threaded port that is now plugged just down stream of the turbo. I love the exhaust, I never realized how smothered the big girl really was!

David

Here is what i suggest for EGT. You want Pre-turbo for sure. I have used 2 of these gauges on 2 different 7.3L trucks.

ISSPRO Gauges at DieselManor
R3607TR-CT Pyrometer Kit*
ISSPRO R3607TR Pyrometer with 6' Hi-temp Lead Wire and R650A-HT Hi-temp (2000°F) Inconel tip adjustable length Thermocouple, Band Clamp style.
Price $143.95
This Pyrometer is recommended for Pre-turbo install.

Excuse my ignorance here. Does the thermocouple attach via the threaded port in the exhaust pipe?

No, that one ; you drill small hole on drivers side exhaust just out a few inches out of the manifold and the thermocouple is held in place with a band clamp , which is similar looking to a hose clamp..

OK, I see. Thanks Mike.