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Old 05-10-2011, 08:12 PM   #30 (permalink)
jran76
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Join Date: Nov 2009
Location: Plano, TX
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Drives: 09 G37S Sedan 6MT
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Quote:
Originally Posted by wstar View Post
On this point: I remember hearing about this in the past, but I don't think stock ECU actually operates in this manner. I've never run my car with the intakes off to visually verify, but when monitoring throttle position sensors (which means the actual throttle plates on our car, not the accel pedal) via Torque or Cipher, it seems they do progressively open just like the throttle plates of any other car. I imagine Osiris or similar should be able to tune them wide open under accel, but I'm not sure.
My car is tuned, and I can tell you it makes little to no difference how far the throttle bodies are opened in regards to throttle response. It is one reason throttle response is not really "tunable" until some cracks the VVEL. You can't really run the car without the intakes connected because the MAF sensors won't get a signal at that point.
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2009 G37S Sedan-6MT: Advan / Volk / Tein / SPC / Invidia / Cobb / K&N
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