Noisy map??
#1
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Noisy map??
Is my map sensor too noisy? I was looking at some logs from other ecus and they seem to be smoother. I have the motorola map hooked directly to the adaptronic, should I put a small cap in to filter some of the noise?
Last edited by TurboRoach; 07-12-2009 at 11:27 PM.
#2
Where do you have the line hooked up?
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#4
Maybe try putting it in with the factory FPR. That's what fixed it for me. I know it's a different ecu but it might be worth a shot.
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#9
ITs just the normal oscillation of the pressure in the manifold due to variation in turbocharger RPM, and cylinder pulses. With where the MAP sensor is currently T-d off in the instructions it is probably more susceptible to these oscillations due to high velocity air hitting the back wall and creating a pressure gradient as well as the number 4-cylinder drawing from the end of the plenum when air is only available to replenish it from 1 side.
The frequency of the pressure waves will increase and decrease with RPM and turbocharger performance. It is going to pretty well be impossible to dampen it electronically or mechanically without attenuating part of the signal you don't intend on hitting. So long as the fluctuations don't cause significant changes in cells I wouldn't worry about it. You could try drawing out of the T/B inlet as air velocity is nearly constant here due to that air supplying all 4 cylinders.
The frequency of the pressure waves will increase and decrease with RPM and turbocharger performance. It is going to pretty well be impossible to dampen it electronically or mechanically without attenuating part of the signal you don't intend on hitting. So long as the fluctuations don't cause significant changes in cells I wouldn't worry about it. You could try drawing out of the T/B inlet as air velocity is nearly constant here due to that air supplying all 4 cylinders.
#10
Some parts of the intake manifold see a lot of turbulence. At least that's what I've read. What he said^^
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