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Thierry25 Thierry25 is offline
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Join Date: Feb 2009
Location: FRANCE (Besanšon)
Posts: 310
Here is the 1st measurement I made with my system

The AIC devices wasn't started. So we would say this is something like the stock measurement. However you have to consider my SC cams , Catalyst bypass straight tube.

There is nothing new into this measurement. As describded by many in this community, we can perfectly see the bahavior of the CIS. It is a bit too fat in the mid ( AFR 10.8 ) and it becomes too lean on top end. (12.8 )

As to the boost pressure, the progressive drop is certainly due to the wastegate. Actually the valve guide is worn and some exhaust gaz go through . Then, this additionnal pressure false the wastegate boost pressure signal. On this curve the maximum boost is 0.95 b and it drops to 0.8 at high rev.

The lambda regulation works very well and the AFR is closed to 14.2 at low RPM
965 C2T / 1991 3.3 TURBO
Old 06-27-2009, 05:48 AM
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