Miata Mailing List: July 1995, Message #393
sponsored by



     


   From: Eric_Rowland@BayNetworks.COM (Eric Rowland)
Subject: Re: Sebring Super charger (M45) Problems
   Date: Fri, 7 Jul 1995 21:15:37 -0400

>I have a sebring super charger M45 for my 90' Miata with only 4500 miles. 
>This unit is Manufacturered by Downing-Altanta and I'm experiencing some 
>problems. This unit was purchased new and I did not expect these 
>annoyances.
     
 >#1.  Noise - from idle to 2000rpm (sounds like a bad water pump bearing). 
 >Manufacturer say's it's normal. Any comments?
     
I'd concur with Gary Samad - I can only hear it with the hood up while
idling, so it's not intrusive.  I wrote it off to tight mfg tolerances
(=better performance!)  Since I rarely stand around with my hood up and the
car idling, I don't think about it.
    
>#2. Flat spot - When blipping the throttle, response is slugglish, causing 
>difficulty when downshifting.  Any comments?

No flat spot or suggish response here (or maybe I'm just not picky).  Might
check your throttle cable run - if the cable is adjusted too loose you may
find that slowing the response of foot hitting throttle.  Also check the
timing.  I'm running mine at 6 BTDC w/ 92 octane.  The MSD unit will let you
run at stock timing.

I drove a Miata with HKS intake and exhaust the other day, and was amazed to
get back in mine and feel the power difference - makes up for any noise, and
the throttle response is a whole lot quicker.

Eric Rowland
'91B gumball blue 
Santa Clara, CA