boost controller project/Introduction

[Adrian Broughton]

> I Have had a look around, and have seen a lot of stuff about boost
> controllers but have not been able to find a kit (diy) out there..:<
>
> Does anyone have or know of a project kit or circuit diagram of a boost
> controller???

Hi Paul & Everyone
Firstly, let me introduce myself.  I've been subscribed to this list for a 
couple of months but have mainly just lurked.  I'm no EFI guru, I'm not 
even a mechanical guru... but I do write software for a living and am 
interested in developing stuff like data-loggers and so on for my 1990 
Toyota Celica GT-Four (called Alltrac in the US - 2.0l Turbo 4WD).

Now, getting onto the boost controller instructions...
Here are a few links to sites with boost controller instructions on them, 
my own site included.
I have recently redesigned my own controller using a variable relief valve 
rather than a needle valve, with very good results.  Instructions for this 
revised design will be on my site soon-ish..
Anyway, here are some addresses:

http://web.one.net.au/~gtfour/    - This is my own site - go to the 
"Modifications" section, then scroll down to "Boost Controller" and click 
on "Instructions".  This site currently has instructions for a bleeder-type 
controller, and is kind of specific to the GT-Four, but also applies to any 
Turbo car that has a factory VSV-controller air-bleed.

http://users.wantree.com.au:8080/~isracing/    - This is the site of a 
friend of mine, Ivan.  He also has instructions for a slightly different 
bleeder-type solution.

http://pages.cthome.net/gus/mike.html   - This is a site that has diagrams 
for a number of different controllers, all based on using relief-valves 
instead of needle valves (they restrict air from going to the wastegate 
instead of bleeding it away).  He kind of makes things a little more 
complicated than they actually are, but this type of valve is much better 
than the needle-valve/bleeder setup.

Oh, another place to try is http://www.hallmanboostcontroller.com/ for info 
on how a relief-valve setup works.  This guy is trying to sell these 
controllers for US$100, but don't be sucked in because you can get the same 
valve (minus the hoses) from McMaster-Carr for US$5.86.  I ordered mine 
over the net and they arrived at my door in Australia in less than a week!

That should be enough to get you started... good luck!
-Adrian
___________________________________
Adrian Broughton
1990 GT-Four Celica ST185 (15psi), 1974 VW Kombi, 1967 Holden HR
Fremantle, Western Australia
gtfour at one.net.au     http://one.net.au/~gtfour/
___________________________________



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