questions: audi 80 4 cylinder

[c a l i b a n <caliban@sharon.net>]

	this comes from a good friend and vanagon synchro hacker.
	i'm sure the knowledge is here, so if someone could mail 
	him (or me, but he is Cc:'d) we'd be stoked.

	tia

Right so here are the couple questions I had:

- Does the CIS-Motronic system has a TDC sensor (top
	dead center)? If so, where on the engine/bellhousing
	is it located?

- What octane gas is "recommended" by Audi for the 4 cylinder?

- And then lists of possible performance increases in:
	- the motronic chip - suppliers?
	- how well does the throttle body flow?
	- filter housing - I've heard that the worst bottleneck
	  in at least VW CIS systems is in the air filter
	  housing inlet as it has the smallest inlet, is
	  this the case in the Audi air filter housing as well?

Danke Rocky

dave