Miata Mailing List: January 1998, Message #5567
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From: 	Welch <ljwelch@access.digex.net>

Subject: Re: timing advance & horse power on Dyno

Date: 	Thu, 29 Jan 1998 23:12:02 +0000





On Thu, 29 Jan 1998, John Freas wrote:

(snip)

> 

> Thanks for the information.  I've always figured the timing bump was worth

> about 3 or 4 hp, and that seems to be the case.  It is interesting that

> your car requires premium at 14 degrees.  Mine runs fine on 87 octane at 14

> degrees except under hard acceleration on summer days.  89 octane is enough

> to keep it under control.  True that different Miatae respond differently

> to timing changes, but yours seems a bit extreme.

> 

> In any case, the hp gain is worth it IMHO, even with premium gas.

> 

> 	-John



I agree with John.  I bumped LadyBug to 14 and still run with 87

octane.  No pinging.  



Hard acceleration on a hot summer day...have I done that?  Hmmm... 

Waiting for April 1 when the HT comes OFF until Thanksgiving '98.



Lester Welch

97R "LadyBug" PhRedd, Ag HT

Team: 14 BTDC, K&N drop-in, CRI horns, Barta wiring change, etc., etc.