Is this normal? I mean, it is cold out, and the car has always ran cold, but I'm talking about on the expressway after about 10 minutes of driving the car is running really cold, barely at/over the safe line. Am I just imagining that its running colder after the tune? I honestly can't say I paid attention before.

 

Is the cooling fan running all the tiime ?? It should cycle on and off.

 

It's an AM tune. Dump it and get a Brenspeed tune. At least you'll pick up a few more RWHP...

I'm not sure how a tune can affect engine temps from running in the normal range. Contact Brenspeed's tech guyz and ask.

 

your CEL light should have come on and gotten code P128. see this thread. have you gotten a CEL? Your problem may be unrelated to your tune.

 

Your tune might have the fan coming on way to soon.
Can you change the temp settings for the fan?

On my SCT xcal Bama tune, the low and high fan temp settings can be changed.

 

I'm going to check today to see if the cooling fan is cycling or staying on. It mainly seems to run so cold on the expressway/at speed, once I get into city driving it warms up a little.