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Old 12-19-2012, 11:48 AM   #86
koke'sfocus
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Location: el paso, TX
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This is the thing my car has never over heated or it over heated in the dyno the problem was he was doing some adjustments in the base tune doing some crusing pulls and the temp went to almost 220* he said that wasn't normal that the temp should be arround 190 that maybe was wrong with my car probably te head gasket, and one of the problems I notice is that my heater didn't blow the air that hot and now that I change the thermostat obviously the problem went away I never hange the antifreeze before so I surely think that was the problem and about if he has ever tune focuses he has he tuned focussport423



Quote:
Originally Posted by Jgrove998 View Post
I'm confused...how bad did your car overheat on the dyno? Did they keep doing WOT runs back to back or turn the fans off? Has your car overheated before to make you change the thermostat? What makes you think the head gasket is bad?

When I took my car to McNews: First Ray did some easy pulls through the RPM band to check the base tune (which was pretty good). Then made some tweaks, loaded new tune (that took 5-10 mins with the XCAL2). Then 1 WOT run. Made some tweaks then loaded new tune (another 5-10 mins to load). Then 1 WOT run. Made some final tweaks and loaded the final tune (another 5-10 mins to load). Then the final dyno pull for numbers. Basically there was always cool down periods between runs while Ray tweaked the tune and then loaded it. Granted loading a tune with the XCAL3 is quicker but there is still cool down time.

What da heck was being done on your dyno runs? The Duratec cooling system is very efficient I never once had any issues with overheating even at ambient temps close to 100* F and sitting in traffic.



Quote:
Originally Posted by PSUrivie View Post
^yeah Griz, I'm curious also. I'm wondering if the car had a cooling system issue prior to the dyno runs.

As far as the head gasket you could do a compression test.

The Focus is a different beast when it comes to tuning. You may want to consider going to a tuner with experience in tuning the Focus.
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