Toyota management mod limitations??

[WILMAN]

----------
> From: Chris Wilson <chris at formula3.demon.co.uk>
> To: DIY_EFI List <diy_efi at efi332.eng.ohio-state.edu>
> Subject: Toyota management mod limitations??
> Date: Thursday, April 29, 1999 5:53 AM
> 
> I have a 94 Japanese spec (imported to UK) Supra twin turbo,but my
question
> also applies to MR2 turbos.Bear in mind,in the case of the Jap spec
> Supras,and the later MR2's,that air flow signals are speed density,and
> not,like all US Supras,air flap metered.
> 
> OK,what I want to do is get away from analogue add on cludges,that go by
> bizzare names from Greddy and the like.I want to re map the ignition and
the
> fuel sides to accomodate raised boost,and I want to remove the safety
> mechanism of a fuel cut.
> 
> Am I right in thinking Toyota don't use a removable eprom on the ECU,but
it
> is mapped in another way? Does this mean that,realistcally,I need to bin
the
> Toyo system,and go for something like Motec,and start afresh? Does anyone
do
> any system that adds on to the Toyo ECU,to allow re mapping?
> 
> Thanks.I am beginning to regret buying this thing,it appears I haven't
done
> my homework,and it is limited in how much control I have over
> mapping,compared to say,Subaru or Nissan,which use a changeable and
> updateable eprom
> 
> Thanks.
> 
> 


Try gems at gems.co.uk. They do an " Implant" for Toyota ECU's which then
allow them to be programmable.