[s-cars] FMIC revisited

Brian Powell powellb at gmail.com
Fri Mar 3 14:01:24 EST 2006

There is no doubt that it increases the volume between the turbo
outlet and the throttle body. I used my Samco turbo down hose to 2.5"
pipe to the IC. Then 2.5" pipe to the Samco throttle body hose.

As for changing of boost threshold, now that I am at sea level, I
can't give you any real comparative data...

I "felt" like it increased a couple of hundred RPM after the initial
install, but I didn't do any measurements.

On 3/3/06, Taka Mizutani <t44tqtro at gmail.com> wrote:
> Brian, Dave, Hap, whoever:
> Have you seen any boost threshold changes with the FMIC? I'm wondering how
> the increase in intake tract affect boost threshold and overall turbo lag.
> That's one reason I've not gone to a FMIC in my car.
> Also, what is your intake tract plumbing like? I saw Hap's post where the
> throttle body points toward the front and the intercooler piping looks
> relatively short. On the other extreme, if you preserve the throttle body
> position and the intake pipe on a 3B/WR type 20vt, you end up with a ton of
> intake piping.
> I have the same issue as the 3B with the insane amount of plumbing involved
> with a boxer 4.
> Taka


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