Re: Type 44 Single Pass Intercoolers in US? Mac-07 ECU

[Sachelle Babbar <sbabbar@iris.nyit.edu>]

Todd, I safely ran well over 2.0 bar on my old kh with my wastegate mod
and no electronics alterations. There was no sensed knock nor was there
anything audible. It took me a loose sensor in my current mc engined car
to know for sure that the sound of knock in type 44's isn't deadened by
the time it reach the pass compartment.

The kh: indicated 2.0 bar, external gauge: 2.2 approx. No knock and just
kept making power past redline. I'm still trying to duplicate the feel.
Felt something like the old body style Q45 with the more powerful motor. I
ran it in this confugation for a couple of years and when I removed the
head after wrecking the car, I was astonished to find that there was only
a light skin of a ridge at the top of the cylinders, bore was very
continuous throughout, and the cylinders appeared to have the factory
cross/honing marks! Over 150k was on this motor and about 60k with high
boost. Every start from a redlight was a full throttle one.

It's funny; the same mods made to my mc don't produce what feels nearly as
powerful results (note the wording feel). Additionally, the computer
appears to defeat whatever mods are made. The wgfv doesn't allow more than
1.5 bar (makes sense), but sags off idle response, delaying the onset of
HIGH boost. I hope to find some fuel/boost/spark maps to be able to
compare them to the factory manual maps I have for the mac 07. I may make
the switch to the mac 07 for arguements sake and see what happens. May be
the kick I'm looking for in terms of more timing where I need it.

****************************************************************************
*Steve                                             Sachelle Babbar
*'87  5000CS Turbo 5spd 1.3-2.0 bar             <SBABBAR@IRIS.NYIT.EDU>
*Cockpit adjustable wastegate, AudiSport badge
*
*Disclaimer:"Any information contained herein is based purely on my own
*personal experience and may not necessarily reflect yours. Use caution as
*your results may vary from mine."
********************************************************************************
                                                                               



On Fri, 3 Dec 1999, Todd Phenneger wrote:

> Scott,
> 	Thanks for the great reply.  It sounds like its just easier for me
> to use the Mac-11 since I eventually plan on replacing the Kh with an Mc
> after I uhhhh...find out how much boost the Kh can handle. :-)  And
> experiment with some mods of my own on it.  So I guess I'll jsut go this
> route. And have you make me up an ECU with a 2.5 bar FPr cutoff.  (if your
> willing of course.  The MC I want to buld for it will have around 8.3:1
> compression anyhow so maybe when I did put that in I owuldnt need to
> change the ECu timing maps???  Any comments on this??
> 	Lastly, any comments on putting an MC cam into the Kh motor.  The
> MC cam appears to have more lift.  (or longer duration cant remember)  or
> both.  But I seem to remember seeing specs and it was more aggressive.  So
> I'm thinking of putting my MC cam into it as the MC going inot the ur-q
> will likely get a custom ground cam.  Comments on this???  Anyone??
> 	Thanks
> 
> 	Todd Phenneger
> 	1983 ur-q / black / getting a MC
> 	1984 4000 Turbo quattro (Faster than your average 4kq)
> 	1987 4000 quattro / Saphire Metallic Blue/ Girlfriend's
> 	1996 A6q / Volcano / Dads Car
>    *****1985 5kt / PARTING OUT!
>   *	http://www.uidaho.edu/~phen9461/motorsports.htm
> -------
> <snip>
> The Mac-07 has the timing/boost etc. data and instructions stored inside
> the microprocessor (uP) in the internal on board ROM, so it is "possible"
> to modify these, assuming you can suck the ROM data out and modify the
> timing maps, boost maps etc. I have never looked into modifying these any
> further due to very little demand. The later MAC11 ECU's had a stand alone
> EPROM which contained this data and instructions.
> <snip>
> 
>