Hummer Forums by Elcova - hayden ultracool

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Ernie Italy

04-05-2006 05:35 PM

My GM tech have installed immediatly a 1404 Hayden ultracool for offroad instead of standard cooler... now with 37 and with the idea of Phil we have remove 1404 and put into the front and a 1405 as stock cooler place...
In highway at 140 km/h the temp of trans is no more than 135 F.... 175F before mods...

Ernie Italy

04-06-2006 05:06 AM

I think that is for this reason that my GM tech have change immediatly the cooler...
What do you think about the modify of catalyzer ?

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