Thermostat and tune

matts04tbls

Original poster
Member
Oct 28, 2012
53
Getting ready to order my tune and seen they can chip for 180 tstat versus 195 oem.... Thoughts?
 

matts04tbls

Original poster
Member
Oct 28, 2012
53
Good enough for me lol I definitely trust your advice and opinions
 

Fire06

Member
Dec 18, 2011
7,223
Some where there is a thread that talks of the GM's not running hot enough due to a lazy t-stat and that ruining the cat because it does not get hot enough to burn it clean.
 

CaptainXL

Member
Dec 4, 2011
2,445
matts04tbls said:
Getting ready to order my tune and seen they can chip for 180 tstat versus 195 oem.... Thoughts?

A 185 tstat might be ok. As long as the temp is over 190 as seen by the CTS. I think its when temps get to 180 or lower that problems start to develop.

Agreed with Limequat . It probably will run leaner and cleaner the hotter it gets.

Here are the scan tool parameters and their typical values at idle.

View attachment 25776
 

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