Snow mpg max controller accuracy? - Competition Diesel.Com

6.6lEater · 06-06-2012, 09:43 PM

I was wondering if anyone has checked to accuracy of the boost and egt readings one the controller? Just installed mine this weekend and removed the msd laser gauge that I had. I was seeing 1500* on wot now I'm seeing 1200* with no water. Also at idle I'm seeing 320* where I was seeing 400ish. The thermocouple is bigger on the snow kit believe 3/16" compared to 1/8" before. Only thing was changed was air horn and snow kit. Now I'm starting to wonder which one was reading correctly?

kawi600 · 07-09-2012, 11:26 AM

I have a set of analog gauges on my truck, as well as the snow controller. They read as much as 100F different sometimes. No idea whats with that, or which is wrong. would have to take a measurement with a known accurate thermometer to say for sure.
When it comes time to shutdown, I go with the gauge that reads the highest.

slipclutchms · 09-20-2012, 08:06 AM

The snow probe is good. Sometimes cheap gauges only are showing you the difference in temp between ambient and the temp it is registering, not absolute temp. Sometimes that can cause a discrepency.

zukgod1 · 12-01-2012, 01:20 PM

For what its worth, I'm running a H&S Mini as well as a analog boost gauge.

The Boost #'s are within 1-2psi most all the time and the EGT between the Snow and the H&S can be 50deg +/- difference.

I dont figure I'm going to run it long enough at any given temp for the 50deg to hurt anything so I've never worried about it.

06-06-2012, 09:43 PM	#1
6.6lEater Name: 6.6lEater Title: Diesel Enthusiast Status: Not Here Join Date: Oct 2010 Location: Goodyear, AZ Member`s Gallery Posts: 207	Snow mpg max controller accuracy? I was wondering if anyone has checked to accuracy of the boost and egt readings one the controller? Just installed mine this weekend and removed the msd laser gauge that I had. I was seeing 1500* on wot now I'm seeing 1200* with no water. Also at idle I'm seeing 320* where I was seeing 400ish. The thermocouple is bigger on the snow kit believe 3/16" compared to 1/8" before. Only thing was changed was air horn and snow kit. Now I'm starting to wonder which one was reading correctly? __________________ 2003 1 ton NV5600 3x4 polished flywheel

07-09-2012, 11:26 AM	#2
kawi600 Name: kawi600 Title: got Coal for Christmas Status: Not Here Join Date: Jun 2008 Location: communist urban hell Member`s Gallery Posts: 861	I have a set of analog gauges on my truck, as well as the snow controller. They read as much as 100F different sometimes. No idea whats with that, or which is wrong. would have to take a measurement with a known accurate thermometer to say for sure. When it comes time to shutdown, I go with the gauge that reads the highest. __________________ Psalm 144 Psalm 37:10,11 Isaiah 65:20

12-01-2012, 01:20 PM	#4
zukgod1 Name: zukgod1 Title: Old fart Status: Not Here Join Date: Jul 2006 Location: Utah Member`s Gallery Posts: 1,397	For what its worth, I'm running a H&S Mini as well as a analog boost gauge. The Boost #'s are within 1-2psi most all the time and the EGT between the Snow and the H&S can be 50deg +/- difference. I dont figure I'm going to run it long enough at any given temp for the 50deg to hurt anything so I've never worried about it. __________________ COMPETITIONDIESEL. 08 F-350 King Ranch, 6.4, H&S. EGR and DPF delete, 5" exhaust and THAT'S IT! Well, aside from wheels/ tires and a leveling kit. Tired of broken crap.

09-20-2012, 08:06 AM	#3
slipclutchms Name: slipclutchms Title: Rookie Status: Not Here Join Date: Sep 2009 Member`s Gallery Posts: 28	The snow probe is good. Sometimes cheap gauges only are showing you the difference in temp between ambient and the temp it is registering, not absolute temp. Sometimes that can cause a discrepency.