[Supras] 57 trim driveability

[berniek at technicaldevelop.com]

Jeff:


    Thanks for the response.  Well, the consensus now that you have also 
"voted" is that its up to me to put more time into learning how to deal 
with the change in character of the car.  I gotta get some time at a 
track, but the nearest one where there is any chance of getting time is 
in Englishtown, NJ, about 50 miles south.  The back roads by Picatinny 
Arsenal near my home are just too unforgiving if I lose it:  no 
shoulders, but trees and (in some cases) guard rails instead (cops are 
there, but rarely).  Unfortunately, NJ is the state with highest 
population density, and I'm stuck here due to work and my electronic 
design client base.  You are almost correct about 1 bit throttle 
resolution, at least to date.  I still have only 600 miles on the 
refreshed JDM engine due to residual salt on the roads, lack of time, 
and rain.  As the weather gets better I'll take the car to an on-site 
client location a day or two per week, also on back roads and only about 
10 miles away.  I guess a good way to start to learn is to first counter 
the intuitive nature to back off completely at first when starting to 
break traction in a straight line.  Cornering can then come later.  Let 
me know if you disagree. 


Take care.


    Bernie


Jeff Mohler wrote:
> Bernie:
>
> Once you learn that on a turbo car you can still accelerate while
> LIFTING the throttle to maintain control and being ahead of the car
> instead of behind it, you'll do better.
>
> I think youre driving with a 1 bit resolution on the throttle, instead
> of a measured response to what the car -will- do.
>
> Trust me..the BIG super many hundreds more HP turbos than what you
> have are hard to drive, not a pea shooter with an upgrade.  ;)
>
> Most issues with driving a challenging car, are the drivers
> fault...dont waste any time or money bringing the car to your
> level..you rise up to its level.
>
>   
>>     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
>>
>>
>>
>>
>>
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>>     
>
>
>