Add-on systems which affect output pulse width?

[Andrew Brownsword]

> I'm not going to get into this, really. You may very well run
> into problems, especially with ignition timing, when you try to
> trick an NA ECU into running much boost. (If you aren't
> reprogramming it, that is.)

Others who have gone to forced induction on this engine haven't had problems
with this, at least at the boost levels I'm looking at (6-7 psi).

> Now I had some questions for you, since you seem to know
> Ford/Mazda stuff well. I did some searching for answers
> but got confused and set it aside. I'd like to get an
> MX-3 v6, and do some engine swapping. I've heard that a
> 2.5l v6 from the MX-6 (or 626?) will basically drop in.
> Wasn't there a 2.5l *turbo* Ford Probe GT engine at one
> point? If so would it drop in w/o much work? Basically I
> think the MX-3 is cute and would get one if I knew I could
> grab a decent turbo engine (well, a whole front cut) from
> something and drop it in pretty easily. (Ignoring ECU hassles
> of course, got to have some fun!) I know there are aftermarket
> turbo kits, etc, but I was hoping for a factory turbo motor.
> Am I just real wrong or was there such a beast? I'm pretty
> sure there was a not-common MX-6 turbo... comments? Thoughts?

There is a fellow in eastern Canada who dropped a 2.5L into the MX-3
successfully.  There were some issues, but I'm pretty sure he sorted them
out okay.  You've got 2 choices for the 2.5L... the KL03 from a North
American PGT or MX-6 (164 hp), or the KLZE (200 hp) from a Japanese car.
The differences are in the intake manifold and compression ratio.

There was no turbocharged version of this engine, but many people have done
this (like me, for example).  The MX-3's engine bay is smaller, however, and
that might pose serious problems to mounting a turbo.  Supercharging might
be better.

If you want to talk to a bunch of guys who know their stuff, checkout the
mailing list...

http://www.amber.org/mailman/listinfo/probe-perf

The KL is a lovely, smoothly revving V6.  You might consider that a KLZE
tweaked out but not forced induction would be plenty in the MX-3 which is
fairly light.

Cheers,
  Andrew