Miata Mailing List: January 1996, Message #14
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   From: wolov 
Subject: 18 degree advance in 1.8L?
   Date: Tue, 2 Jan 1996 00:50:17 -0500

I took a peek this past weekend at the Miataville section on compuserve 
and saw a rather long thread involving Norm Garrett on the 18 degree 
(BTDC) advance that he started in the last (Fall) issue of the Miata mag.

It seems that most of the 1.6L users who have advanced to 18 degrees (all 
on 92 or 93 octane fuel) have not had problems with pinging and have have 
been quite ecstatic with the change.

However, the database for 1.8L users was very sparce and there was one 
mention of pinging (this might have been a missetting to 20 degrees or 
more).

Question: Has anyone with a 1.8L engine advanced their timing to 18 
degrees and if so what has your experience with pinging been? On which 
octane rated fuel?

Robb Wolov & Raven ('95 Black and Tan)
still at 10 degrees on 87 octane