Thanks Robin & Jon for your input greatly appreciated, I will clean out the tube and take new reading soon and post them. I also looked at my
rotational velocity and cyl #3 & 8 were the worst at #3-2.5 to 2.7 and #8-2.7 to 3.1 witch I kinda excepted. The other 6 were in range at 0.0 to 0.5.

 

Wow, mine are doing good! I think the worst I've seen was maybe 2 on #3 and #8 and I've got 300K... makes me feel good about my truck!

 

Do you have the recall gray CPS. If so that is what is causng the #3 & #8 readings.

My Velocity test with Black INTL CPS. Second screen shot is with the recall CPS.

 

No I have IHs dark gray almost black CPS installed looks like I may have to get a black one

 

I never saw any performance increase running any other CPS but just didn't like misleading test results. Nice to see all zeros as a base line.
If that were to change I would put in my spare black and retest and then go from there. Do 3 and/or 8 fail CCT? I would get an intermittent
failure on 3 and 8 would always fail with any other CPS but the black one.

Edit: The thing about tests at idle is you don't know what is happening off idle.

 

Yes 3 and 8 do fail the CCT, Don't have a black one as a spare just the gray one I took out. need to get one from Clay or Bob.

 

I installed the black CPS before live tuning because the live tuning would be specific to the CPS that was installed. That is also why I have a spare black CPS. If the first black CPS goes bad then a like-for-like CPS swap will ensure the tunes stay the same. Just following expert advice.

I don't expect my 7.3 to run like a fine Swiss watch but anything I can do to make it run at it's best I do. Damn PMS.

 

Here you go, it's Saturday so may as well make it easy on you

Riffraff Diesel: International "Black" CPS - Original