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Old 12-22-2007, 03:11 PM   #85 (permalink)
JohnStranahan
Junior Member
 
Join Date: Dec 2004
Posts: 98
Default Re: Suzuki GSXR 750 quad Throttle Body Install on 2.3 L Duratec

We hooked up the SCT unit with the included livewire program to the Focus to look at a couple of things.

MAP-we looked at the absolute manifold vacuum to determine if I am porting it correctly. At idle it read 9.8 then decreased gradually to 7.6 at 4900 RPM. This tell me a port well behind the throttle plates will be a good place to feed vacuum to this unit. That is where my rearmost ports are located.

IMRC-Intake Manifold runner control- This is the output of the solenoid. It switched from 0 to 1 right at 3000 RPM.
IMRCAD-Intake Manifold runner control AD count. This is the ouput of the position sensor that is contained in the vacuum motor that runs the runner control. I monitored this to see how fast was the response to an opening signal. It appears from further study that this sensor reads open or closed only. I can't get speed of opening data from it. There is bound to be some delay in the Vacuum motor. I don't want to feel a step in the power delivery right at 3000 RPM. I also may be able to tune this for my application by using stock Suzuki vaccuum ports just in front of the throttle plates.

We could not find an output for the IMTV intake manifold tuning valve (tumble plates). I believe they open at 1200 RPM.

I have a very adjustable bellcrank from Mr. Gasket that I plan to use to hook these vacuum motors to my secondary throttle plate shaft.

IAT-Intake air temperature included with the MAP sensor. 74F actual signal 617 This is probably mV.
98 F 486. This will tell me if the Suzuki IAT is compatible electrically if I test it with similar temps.

EGR-I had another discussion with my Ford Tech. The egr is only active at cruise. Not at full throttle nor idle. Full throttle power will not be affected.

Last edited by JohnStranahan; 12-22-2007 at 04:40 PM.
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