Re: 4KTQ conversion questions

[Martin Pajak <urquattro@wave.home.com>]

Huw,

> Dan Jones told me privately, and I may be misquoting him completely,
> that the CIS-E fuel dist can only keep up til about 5 lbs of boost - so
> maybe the "old style" CIS fuel dist in the late 80's 5kt system is
> capable of delivering more fuel?

I found similar situation out when swapping the MC engine into the Ur-q.
The stock Ur-q fuel distributor could not provide enough fuel at anything above
7-8psi (the O2 sensor just goes into red).
It did not "feel" like it was running lean but thanks to that gauge I was able to
spot it right away.
Installing the MC fuel distributor and lines/injectors cured the problem.
Obviously the computer was set up to run with the corresponding fuel system.

That does not mean that CIS-E will not work (as a whole system) with a turbo, but
get yourself a O2 gauge before any serious damage occurs.

Regards
--
Martin Pajak

http://www.geocities.com/MotorCity/5939

1983 Audi Ur-quattro (229,000 km)
1986 Audi 4000 S Quattro (415,000 km) with 5 bolt pattern