Quote:
Originally Posted by Tippy
There's virtually no way around this.
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Tippy, you should not take a car to the dyno if it has issues. This setup has huge red flags. Being lean at 20.0AFR at idle is a huge red flag. If you tune a car that has issues you will simply be tuning around the problems and make things worse.
Even if this is a 3.4L it should idle correctly at 14.2AFR with the O2 sensor disconnected and it does not do that. I fear that whatever is causing this issue is also the root cause of the lean WOT runs. I would not push this engine very hard, no more WOT runs till the root cause of the lean idle is fixed.
Also keep in mind that some Dyno owners don't care what shape your car is in, that's your responsibility. They also have you sign a waiver saying they are not responsible for any damages. Some who own and rent dynos are simply looking to do pulls and collect money. Finding a real good tuner is not easy, not just a tuner that can tune WOT but a tuner capable of tuning Part Throttle correctly and this can only be done on a load dyno also known as a steady state dyno. Dynojets can't do this. Some Mustang and Dynopacks can but these are very expensive dynos. Chances are that if a tuner has a steady state load dyno then they know why they bought it.
This of course is just my opinion.