just bought myself a 2004 GMC 2500HD duramax and was wondering what the best cold air intake would be for it? Also what size radiator does this thing have? great site lots of helpful information!!!

 

Modify your stock intake and you can save urself a few bucks.

the radiator size...

 

the stock intakes work awesome when you modify them I actually like my stock one better than the aftermarket intake I had

 

toy4xchris,

I have a 2008 Ford 6.4 Liter and had the same question about cold air intake. Of course every brand is (and they can prove it) the best. What do you mean modify stock one? How? Did I mention i get 13.5 mpg on hwy at 70mph, 11.5 to 12mpg before the hypertech.

 

you can modify the stock one buy gutting the stock intake tube and buy an s&b filter or afe and clamp it on to the stock tube or you could buy some pvc pipe and make your own intake tube but most people just buy and after market one so they still have the stock one but it is up to you.

As far as the radiator size do you mean how many gallons it hold or do you mean the intercooler

 

what size is the intercooler? I live in arizona where it get well over 110 in the daytime and want to keep it as cool as possible. Also I have heard that the dex cool coolant that GM says to run it not good???

 

TOYS4XCHRIS

WHAT KINDA MPG DO YOU GET HWY. I AM AT AN UNBEARABLE 13.3 HWY AT 74. MY TRUCK LOOKS ALMOST IDENTICAL TO YOUR FORD