Tuning Dual Runner Length Intake

gernoff · Post by **gernoff** » Wed Mar 29, 2006 6:56 pm

I have a Cyclone Intake (dual runners) for my Talon (4g63 motor). I know how to control the butterflies to select which set of runners are used based on preset RPM and boost values (this is the way the JDM ECU controls the system as far as I know).......

The questions are:

I assume the two different runner lengths have different VE values. Can this be accounted for using just one 12X12 table or will I need to switch between two different tables based on which intake geometry is being used.

Is there a better parameter I can use to base the butterfly valve activation on?

Any input and advice is very welcome!

Bernard Fife · Post by **Bernard Fife** » Wed Mar 29, 2006 7:00 pm

gernoff,

If the runners are activated based on a specific rpm and specific boost, then you only need one VE table, as the runners will always be activated in a specific corner of the VE table (i.e., hi rpm, high boost).

If you wanted to base it on just rpm, or just boost, that would be fine too. But if you based it on something else (hard to say what else would make sense, though), you would need seperate VE tables.

Lance.

gernoff · Post by **gernoff** » Wed Mar 29, 2006 7:41 pm

Excellent, thanks for the input.

anarchyx34 · Post by **anarchyx34** » Thu Mar 30, 2006 1:38 pm

gernoff, what are you using to control the opening and closing of the runners? My mazda has a similar setup, but I havent hooked it up yet.