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looks like this thread died suddenly..anyways,i just put a set of these on my 07 FXDB and it lowered the temp of the heads,headers,exhaust and oil about 20-30 degree...lowered fuel mileage about 4-5 mpg but i can live with that...:>
looks like this thread died suddenly..anyways,i just put a set of these on my 07 FXDB and it lowered the temp of the heads,headers,exhaust and oil about 20-30 degree...lowered fuel mileage about 4-5 mpg but i can live with that...:>
That seems like a big loss inmileage for such a small drop in temperature. I read somewhere that the rear head temperature was running in the 400 range so 30 degrees is only 7.5% drop.
Can you feel any difference?
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