Installed "Dave" Cap now wont run over 1000RPM

DeneOehme · Post by **DeneOehme** » Tue Aug 15, 2006 8:27 pm

MSnS, 2.2 board,

As the subject says. I installed the Dave Cap to get rid if low end tach spikes but then it wouldn't under any circumstances run over about 1000 - 1100 RPM. Dave cap now uninstalled but still have tach spike sto deal with.

Dene

Post by **jsmcortina** » Wed Aug 16, 2006 5:14 am

Any more details about your setup?

James

DeneOehme · Post by **DeneOehme** » Wed Aug 16, 2006 3:56 pm

Latest Code MSnS, 2.2 board, MSD6a, distributor with VE and 4 pin ignition module supplying tach info.

Anything else you need to know?

Thanks in advance.

Dene

Boris740 · Post by **Boris740** » Wed Aug 16, 2006 5:42 pm

Could be that you have larger than 0.22uF in that or perhaps even if you have the "correct" value it may be too large for your setup. Try half that ( two 0.22 uF in series) or even less.

Post by **jsmcortina** » Thu Aug 17, 2006 2:12 am

As you are trying to run spark control do not fit the Dave cap at all - it will alter the timing. You need to eliminate the noise by careful grounding, wire routing and screening.

James

DeneOehme · Post by **DeneOehme** » Thu Aug 17, 2006 3:51 pm

Ok, that makes sense. I take it that the other suggested filter circuits etc wont play ball with spark control either?

Dene