Miata Mailing List: October 1997, Message #165
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From: 	Paul Turin <pturin@ssl.berkeley.edu>

Subject: Re: '96+ owners w/*chargers

Date: 	Wed, 1 Oct 1997 15:17:37 +0000



The only identified problem so far is running lean under boost. I'm playing

with a potentiometer in series with the intake air sensor right now (a fix

from the Sebring setup), and it seems to be a partial solution at least;

the mixture gets to full rich under boost, but every other time or so the

turbo gets up to pressure, but the mixture stays lean off scale for 2-3

seconds. When the mixture richens up, I get a power surge.

 Next in line is messing with the EGR boost sensor signal. Hopefully I'll

have this sorted out in a week or so, and will post a how-to. Let me know

how your car runs when you get it back, particularly what's the mixture

like under boost.



Regards,

Paul Turin

 

At 12:06 AM 10/1/97 +0000, you wrote:

>>> Unless they have a A/F meter, they may not realize they have a problem. My

>>> 96 drives ok, boost feels fine, but its slower than it should be and

>>> running very lean.

>>>

>>> Paul Turin

>>

>>Thanks for the feedback Paul.  Guess that makes a grand total of

>>*one* 1996 supercharged/turbocharged Miata out there?  ;)

>>

>>

>>\/\/    ---->    Will Brown    ---->    Charlottesville VA

>>http://www.geocities.com/MotorCity/Downs/7061

>>snip<

>

>

>I'm having a Bell System III turbo installed into my '97R even as we speak!

>

>What are the potential problems as they relate to OBDII? (besides possibly

>running lean - why?).

>

>I'm also having installed 270 cc/min.fuel injectors, Bell's 2.25" downpipe,

>J&S, and Link A/F meter.

>

>Opinions, insight, answers etc. from Paul, Will and/or the List is most

>appreciated.

>

>Regards,

>

>Steve MacDonald

>Team alot of stuff and hopefully not a turbo sized headache

>

>

>

>

>