SV: Speed Pro/ESC question

espen hilde mwichstr at online.no
Wed Dec 13 22:49:36 GMT 2000


Hi!
I dont know anything of the strategies behind the knock measurement in your 
ecu but in Electromotive unit you had to adjust the sensitiveness to fit 
the engine and maybe shut it off over a certain rpm when the engine starts
to make to much noise.Listening to the engine when its pinging and adjust
so it just takes the knock?? a cople of hours on the dyno detonating and 
testing ..........maybe wreck a engine or two? This is why we want ION!!!!!
All the features of some of theese ecus takes long time to do properly,
and many users dont bother to use some of them ,sometimes it dont work
as good as in the ads.
Espen


Jeff Moskovitz [SMTP:jeff_moskovitz at filemaker.com] skrev 13. desember 2000 
23:29:
> Maybe not technically a DIY question, but close enough ;-)
>
> Based upon the advice from some on this list and others, I picked up a
> Speed Pro bank-to-bank/wideband O2 ECU for use on my turbocharged Toyota
> 4 banger. Got the unit last week, am picking up the engine this weekend,
> and will be installing both over the next few weeks. I am very psyched!
>
> Anyway, the Speed Pro uses a GM ESC module and knock sensor for knock
> retard duties. The ECU has a one-wire input from the ESC -- not sure
> which wire, as I'm not sure yet just how the ESC gets hooked up, but I
> assume the ESC has something like a positive, ground, signal in, and
> signal out, and it's this signal out that gets wired to the ECU.
>
> I guess my questions are:
>
> 1) does anyone know what sort of input the Speed pro ECU is looking for
> from the ESC unit?
>
> 2) just how "tuned" are the ESC unit/knock sensor combos? What Harry at
> Precision Turbo is recommending is a mid-80's turbo Buick (V6) ESC
> module, and this will be installed on a mid-80's Toyota turbo 4. These
> engines have different acoustical characteristics, but maybe this isn't
> too critical since the system is using mid-80's technology?
>
> As always, I am appreciative of whatever input  anyone is willing to
> share.
>
> Jeff Moskovitz
> 
------------------------------------------------------------------------  
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the 
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
> 
----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org




More information about the Diy_efi mailing list