I have read through your thread Strip. I am going through a process of elimination right now. My first step is to confrim the whiple kit didn't changed the main puley. Then, I'll check for a crimped line this weekend. After that, I will concentrate on the pump. Thats where your thread will be read, and re-read I'm sure.

Is your WP lower now too as compared to previously since the SC install?

I know my blower pully is 8in, I an thinking the small on is the same as stock

Yes, but before it would almost peg the gage. Now it runs where it should. The water temp is much cooler.

the kit comes witha restrictor,Whipple wants it to run cold,

The water crossover prop made a diff in press and does yours have the whipple fuel cooler?

This is corect, whipple wants this engine to run cool. This is what has given me trouble the past couple of weeks. My engine builder had the engine running 140 on the dyno and tuned it that way. Now that he sees this engine runs less than 100 we are having to retune and to get her to run perfect. I'm very glad I put an oxi sensor nub in the exhaust !

As for the cool fuel from Whipple, I don't know. I don't think so.