So I recently got the PV license for my 04 FXDWG and today while riding with the PV gauges on, I noticed that the head temps getting WAY hotter than my 2013 FB with the 103. So on the '13, I've very occasionally seen it get up to 300F on the hottest summer day when in traffic. But on the '04 today, I saw 350F during normal riding speeds when it was only about 90F outside. I've never seen anywhere close to that temp on the 103. Is there something different about the head temp sensor on the 88's? I noticed its in the same location as the 103 - rear left side of the front cylinder. I'm thinking about getting a new sensor to see if it's just gone bad. Had no issues riding btw, and not a single ping. So I find it hard to believe that temp was accurate.

 

what is your cruising and idle target AFR set up at?
m

 

It's slightly richer than stock. So 13.9 for idle and the leanest it goes in cruise is 14.5. I should add that the map I got from dynojet also added fuel in the VE tables.

 

Have you checked it out for any possible vacuk leaks?
m

 

Yes, it has no leaks. It runs perfectly.

So I figured it out. In the PV, there is an option for "Engine Temp" and "Head Temp". I was looking at "head temp", which I discovered is approximately 50 degrees higher than engine temp. So since as far as I'm aware there is only one engine temp sensor(and one air intake temp sensor in the intake) , where is the PV getting this "head temp" from?

 

Well I figured it out in case anyone cares. According to Dynojet, "Engine Temp" is straight from the cylinder head sensor. "Head Temp" is a calculation done by the ECM based on engine temp and IAT. Not really sure what value the head temp reading is to anyone or what the formula for the calculation is, but it will always read higher than engine temp.