84 UR-T tuning potential

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <Pine.SOL.3.96.980310105952.22781F-100000@hendon.noc.demon.net> Michael Burton writes:

> I had some in depth discussions with Pete at White Cottage Quattro about
> doing things to my MB, and he also mentioned that depending how far you
> wanted to go, the WR was a better starting point, due to, as Phil says the
> fuel injection. With either the WR or MB, you are going to struggle to get
> anything over 300bhp anyway without replacing the fuel system, neither
> system can supply fuel for 300+. We also went into the discussion about
> unleaded petrol. I was told that if I were to tune my MB engine, once I
> started to use unleaded, serious flat spots in the power curve would
> appear :-(

Erm - 4500rpm at 1.66 bar in the 'regular fuel' map, perhaps?  More of a pit 
than a flat spot. The odd vagarities of the ignition maps for the MB (MAC12D) 
have occasioned lively (if offline) debate.  There are some values in the maps 
that simply look like typos.
 
> The top and bottom of the converstation was that if I wanted 300+ bhp
> without flat spots, then the best route to take was to install a 20V
> engine from an S2. These engines can be picked up for between 1.5 to 2k
> and make a good starting block for future serious tuning.

Yup.  Bodywork implications for the cats, though.  You _were_ going to fit the 
cats, weren't you?

-- 
 Phil Payne
 UK Audi [ur-]quattro Owners Club