Is it possible to run dual IACs off of a single MegaSquirt?

limeycars · Post by **limeycars** » Tue Aug 29, 2006 10:20 pm

I am setting up a Jaguar with dual SU-style throttle bodies. Both are machined for IAC valves.

I can either run dual IAC valves or plumb a single remote one into the old starting carb tube-manifold underneath the intake.

I would much rather lose the tubes. They are a major pain.javascript:emoticon(':evil:')

Is it possible to run a pair of IAC valves, splitting the signal wires so that they are run in parallel?

I figure it will either work perfectly or not at all.

Help me out here.

Thanks

3.0 board, MSII, jumpered for IACs.

jsmcortina · Post by **jsmcortina** » Wed Aug 30, 2006 4:30 am

You can certainly try it, but beware of overloading the IAC driver chip.

Another alternative for the more electronically minded would be to duplicate the IAC driver chip circuit so you have equal current driving capability.

James

78Spit1500Fed · Post by **78Spit1500Fed** » Wed Aug 30, 2006 6:29 am

I think the Remote IAC housing is probably the more simple way to go... at least you're positive that each SU is getting the same airflow. If one IAC stuck and the other didn't that could cause some driveability problems.

-Brian