.  Did you choose this version of the turbo for a
> reason?  I
> was under the impression that the 89-91 was a better choice,
> which is why I
> bought one.
$$$$$$$. I chose the 86-88 as it was half the price, and Adam at RX-7
Specialties felt it would be adequate.

 I do know that the wastegate on yours is very small
> compared to
> the later version.
I've been wondering about this, as it really does seem small.

  When the RX-7 guys start opening up their exhaust
> systems, they run into boost creep, which means they can't keep the boost
> down even with the wastegate wide open.  The fix is to port the
> wastegate as
> large as you can without making it larger than the flapper valve
> that closes
> over it.  The RX7club.com site has a few threads on this, along with
> pictures if you search for them.

Thanks, I will search for info on this.
S. Todd Bartrim
Turbo 13B rotary powered
RV-9endurance (FWF)
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm