Pretty impressive Kevin.

It'll be interesting to see how the 4" obx compares. I would like to see you do a direct compare if possible.
I would not bother with a K type thermocouple. The stock thermistor is probably just as or more accurate than a K type thermocouple at inlet air charge temps.
Steve

 

I was talking about a thermocouple to measure the blower discharge temp along with the stock IAT sensor for the output just to comapre the two. If the 4" works a bunch better and the blower outlet temps are lower for whatever reason it really wont a fair comparo. I can just weld a bung on one of the steeil charge pipes going to the IC and I can also use that to put a pressure gauge on as well to see the boost drop.

I have no idea what the the 3" or 4" inch OBX is rated for flow-wise John. Its rated for everything from 800-1000cfm to a super drift special so who knows. Hard to really find any legit info on them. Worst I am out is 150 or so trying it so what the heck..

 

I get it now, good idea!