[Supras] 57 trim CT26 alteration

[Walker, Brian (Rich. Dist)]

The new Mini uses this technology, probably as an effort to address many
folks concerns it would have slower response as compared to the previous
supercharged engine.

As far as porting the WG area, once the WG opens it becomes a portion of
the exhaust so you're effectively increasing the area for the total
exhaust stream. Won't effect spool just like mentioned as it's not a
factor until the signal tells it to open. Similar to the divorced DP,
more area for the total exhaust flow.
Brian W-88T

Date: Tue, 11 Dec 2007 01:59:35 -0500
From: "berniek at technicaldevelop.com" <berniek at technicaldevelop.com>
Subject: Re: [Supras] 57 trim CT26 alteration
To: Jeff Mohler <speedtoys.racing at gmail.com>
Cc: "Supras at supras.com" <Supras at supras.com>
Message-ID: <475E3557.7080400 at technicaldevelop.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

After disussing it with (I forget who) at Performance Techniques, he 
agreed that the boost would come on faster without clipping the turbine 
wheel.  But then, what to do with volume of exhaust gas after spoolup?  
Bypass more at the wastegate, which is what we did.  The ideal solution 
would be variable geometry inlet guide vanes.  Although they made a 
brief appearance on cars some time ago, they seem to have become 
relegated to truck use, no doubt due to cost considerations.