[Supras] boost pulling timing

[berniek at technicaldevelop.com]

PS:  Read too fast, now too late to stay up.  Thought you were speaking 
about boost, not temperature pulling timing,


berniek at technicaldevelop.com wrote:
> I've wrestled with this issue too, running a Lex and 550cc injectors, 
> 57 trim CT26, 3" turbo back exhaust, 15-17 PSI boost, IC upgrade to 
> come, some hardpipes, all with the stock ECU, trimming fuel pressure 
> and the Lex bypass.  In a word, the pressure transducer at least in 
> '90 and '91 applications only operates the dash gauge, nothing more 
> (it will operate up to almost 15 PSI at about 14.9V output if you 
> rescale the gauge circuitry to match it).  That leaves the knock 
> sensors to retard timing if and when needed under higher boost.  I 
> believe Jeff Corbat is running a setup like this with a stock turbo 
> and has had no problems.  I've had no codes set ever (in all of 500 
> miles, lol, but some of it before the snow under really punishing 
> conditions.
>
>
>    Bernie
>
>
> PS:  I believe I might have an earlier ECU which might explain slight 
> mixture dependence upon temperature and faster idle with the lights 
> on.  Once when I did not catch second gear upshifting in time, it spun 
> to 6500 RPM, which '91's with fully counterweighted crankshafts are 
> not supposed to do.  My '90 stuttered at 6200.
>
>
>