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**Shane@DBPerformance** · 10-08-2005

I wouldn't go too low with a stock ECU. The ECU won't fully come out of warmup mode, if it doesn't get hot enough. The car will probably run fine, but you might have some swings in the A/F ratio at WOT that will make tuning a bit harder, if you are sometimes at 175 degrees and other times at 195 degrees. I run a colder one in my car with the AEM EMS, but I have full control over the warm up enrichment tables and the fans. I probably have it set to come out of warm up mode at around 158 degrees and I have the fans come on at something like 180 degrees and shut back off if it gets under something like 175 degrees.

10-08-2005	#2
Shane@DBPerformance formerly ecoli Join Date: Oct 2003 Location: On the dyno Posts: 4,892	Re: Thermostats I wouldn't go too low with a stock ECU. The ECU won't fully come out of warmup mode, if it doesn't get hot enough. The car will probably run fine, but you might have some swings in the A/F ratio at WOT that will make tuning a bit harder, if you are sometimes at 175 degrees and other times at 195 degrees. I run a colder one in my car with the AEM EMS, but I have full control over the warm up enrichment tables and the fans. I probably have it set to come out of warm up mode at around 158 degrees and I have the fans come on at something like 180 degrees and shut back off if it gets under something like 175 degrees. __________________ www.dbptuning.com