Paul,
Here is some information from Tracy on the coil problem.
Ian

Coil/igniters are fairly critical on two things.

(1) Ambient temps around coils should be kept under 130 degrees when run
at constant high rpm operation.  I enclose my coils and have a blast
tube blowing cool air into the enclosure to ensure this.

(2)  Dwell time on coil needs to be correct.  If possible, measure the
running dwell time on the coil (Pin A on RX8 coils, see instructions for
location).  It should be close to 3 milliseconds.  I can't remember the
details of your EC2 order but the Renesis version can be ordered with
one of two options,  LS1 coils (5 millisecond dwell time) and RX-8 coils
(3 MS).  If you have the wrong version the coils could run hot (LS1
running on RX-8 coils) or have weak spark (RX-8 running on LS1 coils).


Ah so. Very good. All makes sense. Jibes with what I measured
on the RX8 car coils. I.E. 2.5 milliseconds. I'll start mounting
coils inside the ram air ducting for the radiators in my 3D's :)
Simple fix.

Have you checked your dwell time yet Ian?

Paul Lamar ...No rotor no motor.

Yes 2.5ms.
I will send the cowl pictures soon.
Ian

I have come to the conclusion, after looking at the stock
RX8 computer PC board, the required power switching transistors
or FETs MUST be in the coils. Search as I might I cannot find
anything on the PC board that looks like a high current FET's or
power transistors used for driving four coils.

IMHO fuel injectors will soon have the power switch integrated into
the injector body as well.

Paul Lamar ...No rotor no motor.

Paul

What about the  two transistors attached to the heat sink in the upper left
of the board?

DougFir

I am not sure what they do. They might be the injector switch.
NEC B1453
2SB1453 PNP epitaxial silicon power transistor    
For fast switching.
Functions     PNP epitaxial silicon power transistor
Applications     For fast switching
Features     High DC amplification factor
hFE>=100(VCE=-5V, IC=-0.5A)
Full-mold package, easy mounting
Performances     VCBO=-60V, VCEO=-60V, VEBO=-7.0V
Ic(DC)=-3A, PT=25W(Tc=25deg.C)
PT=2.0W(Ta=25deg.C)
hFE=100 to 400(VCE=-5V, Ic=-0.5A)
VCE(sat)<=-1.0V(Ic=-3A, IB=-0.3A),
VBE(sat)<=-2.0V(Ic=-3A, IB=-0.3A)


Paul Lamar

Those transistor could be a high speed switching power
supply that reduces the 12 volt car battery to 5 volts
for the computer.

BTW do any of you electronic types recognize
this semiconductor logo? An italic capital D with a line
under it.