BlownChevy,

Has anyone successfully run two of the upgrade coolers in series? Any benefit? I experimented with a second cooler in series before I swapped the big one in and it didn't work out on the H2. The area the second cooler can fit (behind the skidplate) turned out to heat the water back up before it went into the intercooler in the manifold. I'd think my experiment would have yielded different results on the regular trucks.

 

It has been done, any time you can increase surface area of a cooling system it will be better to a certain point.

 

Is this HE an "upgrade" or a product improvement... meaning if you order the kit now, this is the HE you get with it?
thanks,
Damon

 

It is what comes with the kit now. I read this post the day after I ordered my radix, and after reading it called magnacharger to see about the upgrade. They told me that they made it standard about 1 1/2 years ago. Before that it was an upgrade.