Quote:
Originally Posted by Silber Adler
Brian, My question is why the big S curve in response. 0, 1, 2, then shooting to---->6 with nearly constant pressure on the foot feed. It will go from 5-6 to 9 in another second if go to say half throttle. Is that what your car does? I wouldn't think the the max pressure that the waste gate kicks in would have much to do with the lag.
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This is quite typical of a turbo's response. You get very little response at lower rpm's and then, in a very short period of time, the rpm's climb into the area where the turbo can spool and the boost climbs accordingly.
You're correct about the wastegate.