I was putting this off primarily because it was getting beat up pretty good by other members. Ok, single plane wheels were. I still don't know what is really going to be the differences, but here is what I have observed from the 14 bladed dual plane wheel.
Before I get too far, keep a few things in mind, 1. I have a Banks Techni-Cooler system that will reduce boost because of larger volume. 2. I live at 4000ft ASL. Other than that, I have the usual "me too" mods, Blue Spring, 4" turbo back, SRL, EGR cooler delete, OEM bolts.
Obviously it spins up faster and the WFO EGT is down about 200*. What I didn't notice, because of a wicked cross wind on the way to Reno today, was the DROP in boost to maintain highway speeds. No kidding, the wind had died down, I'm cruising home (55 miles or so freeway), and notice that I am BELOW 5 psi at 73 mph! I would usually see 7 psi at that speed with the other wheel. I thought that my new Auto Meter gauge was broken, so I fired up the Scan Gauge and it confirmed the number.
We all know what lower boost at the same speed means, better mpg!
I'll keep on this and let y'all know if this theory pans out, but it almost has to. I mean, if my mpg gets cut because a cross wind drives the boost up to maintain X mph, then a lower boost number at x mph should mean better mpg.
Like I said in the other thread, Anything after WFO EGT drops would be a bonus to me. Quicker spool, a little less smoke at spool up and less boost at highway speeds sounds like a winner to me.
One final note, when I got Adrian on the phone to confirm order details, he went into get detail to make sure that I understood EXACTLY what I was doing to put this wheel in. Sure it sounds like a no brainer, but if you've never done one, you may not know it's reverse thread, among other things. So a big
to MTW's customer support.