|
NEVER did I say the sensor had an impact on performance. It has an impact on driveability in my opinion. I want my mixture richer than stock settings. The O2 sensor tries to correct the mixture at idle, constant acceleration and part throttle which can be felt while driving. This isn't a deal breaker - just an annoyance in my opinion.
mca,
Constant acceleration ? Think about that for a minute........
My point is that it is better to read an accurate reference than to continue shopping for answers that agree with your misconceptions and erroneous facts. I think you have asked the same question 20 times on this list and continue to ignore the answers, but that is just my opinion.
The compression change was made in 1980 and coincides with the timing change. The CIS lambda system was changed more than once and all the changes were driven by emissions testing and the subsequent driveability issues. My advice is stick to the Bosch and factory manuals, the Bentley has many errors, especially about CIS lambda.
All beginners start learning about engines doing tune ups, adjusting idle settings and playing with an unloaded engine. Unfortunately, years of this behavior creates many misconceptions and false conclusions that are hard to overcome. The fact is that idle settings are largely irrelevent and have little to do with what actually happens under load. Most OEM's make full load WOT mixture settings richer than ideal for many reasons and the "richer makes more power" statement is largely false in practice. Most of the information in internet posts and in magazines is misleading and useless. If you actually want to learn about this subject, start with the Bosch manuals, the evolution of engine management systems teaches a lot about the problems and issues involves. More involved IC texts are available if you want to progress beyond the basics.
__________________
Paul
|