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Old October 20th, 2012, 14:02   #71
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Join Date: Feb 2002
Location: CT
Fuel Economy: 46

Originally Posted by thundershorts View Post
The tune would have overwritten the older vw software/bosch plugs when you loaded it, Had the newer software/ngk plugs been installed, it would have done likewise. The newer software/ngk plugs were never installed on your car. Now that you have 7v plugs vs the 5v plugs which came out, the question may be what voltage/heating duration/afterglow is incorporated in your tune. Some tunes apparently for the 5v bosch, increased the heating times. Your present tune may be in fact proper for a 7v plug as indicated by the damage to the 5v bosch gps. A good indication may be the cold starting smoothness. At least you won't damage the 7v plugs running them at lowe voltage, they just won't get as hot as fast. Glad you got the ngk's done, as it may help in ruling out causes of your rough idle warming up.
The newer VW software was loaded in the car as I put the original code in the car several weeks ago, and the dealer verified this week it is correct. So if Malone did not change the glow plug settings, then I should be fine with it.

As far as the rough idle, I really don't notice it like before (so far.) I don't see how it should make a difference as last month the rough idle was apparent even after driving 1 1/2 miles down the road to get coffee. At this point if the glow plugs fix it I'll be happy as this thread is getting to long.
lynnejohn is offline   Reply With Quote
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