Hi,
Thought I would pitch in on this age old question. I'm getting ready to do the Caddman on my 1500 Classic. I read a few weeks ago about a guy putting small pneumatic mufflers on the inlet side of the ICS solenoids. I did this and it seems quieter although I don't have the open intake yet. I really don't want to get rid of them because I ride in a lot of 40 degree weather in the early Spring and early Fall. I'm installing a TFI this weekend and intake sometime after that. Have a good rest of the Summer.
Randy
Quote:
Originally Posted by RichLockyer
The problem with the ICS is they are not proportional linear... they are effectively digital... they're a light switch... on or off. That's also why they are so noisy. When it's very cold, they'll be open all the time and quiet, but in the transitory temps (70 or so like Caddman mentioned) they're constantly opening and closing to maintain idle speed.
The tubes that they plug into on the backing plate are throttle plate bypass ports. When the ICS opens, it's the same as cracking the throttle.
More effective/reliable than a bi-metal strip thermostat on a high-idle pin? Perhaps. Smoother and quieter? Heck no.
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