Quote:
Originally Posted by brody
This is one thing that has plagued our dyno, the Innovate unit that is built into the dyno displays a proper reading, but after it filters into the computer and onto the screen for print out there is signal loss, and it reads .5 to 1 full point leaner than the real world reading. Mustang has never been able to help resolve the problem. It is trivial though, the LM unit is 100% spot on, and we use the graph to see how smooth the AFR is, because after all that is key as well.
Also, all cars we tune or just dyno, start off around 14 - 15 AFR and dip down to their open loop WOT fuel ratios. There is no pinging at that point and when the AFR is critical, it has already dropped down to the proper or "safe" level.
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Thanks for clarifying, so most of the WOT run the AFR was in the 12-13 range? How about partial-throttle - is it comparable to OEM?
I've spent some time setting up a dynamometer, so I can appreciate how tough it is to get some of the weird bugs that come up sorted out (the one that I worked on was an engine dyno, and for a while the throttle controller would oscillate like a metronome when it was supposed to be steady-state WOT...I ended up doing a fair bit of tuning just holding a throttle cable as a result!).
Also, I noticed on your website that you make turbo kits for BMW's. Any chance that a 944 n/a turbo kit might be in the works?
