[Supras] 57 trim driveability

[berniek at technicaldevelop.com]

Brian:


    No doubt you are correct in the most absolute sense regarding 
learning the means by which to control power delivered to the driving 
wheels.  What makes matters difficult is the fact that spoolup to 18 PSI 
occurs almost "digitally" as written previously, probably due to the 
fact that I did not have the turbine wheel clipped (wastegate passage 
was opened up instead).  That consideration coupled with extreme 
non-linearity in power output vs. throttle position makes spirited 
driving in corners a real challenge.  Despite being older than most 
here, I do have fast reflexes, which show up in differing aspects of 
activities such as automotive and motorcycle accident avoidance, and 
music performance sightreading.  Although now in storage gaining value, 
I did controllable wheelies with my '70 Honda CB750, pre-K series, 
bought new (My present ride is an 1100cc Goldwing Interstate). 


    I guess what I'm trying to state is that in a sense, spoolup within 
a very small RPM range (2800~3200) coupled with throttle non-linearity 
seems almost like an artificial impediment.  Yes, I know it is the 
character of the car now ('91 with mods as described), and maintaining 
controllability on the edge of a dry pavement drift was much easier 
(albeit slower) with my former '90, which was essentially stock. 


    Ultimately an answer will come out of this, either in terms of 
increased learning effort on my part or by some means of driveability 
assist, if you will.  As stated, Ford attacked this problem over 40 
years ago by throttle linkage based non-linearity introduction when the 
Paxton blown 312 CID Y-block V8 was introduced to compete with the Chevy 
and Pontiac Rochester constant flow fuel injection system.


    Bernie