Quote:
Originally Posted by mmsracing
I have never seen a motor blow at idle, regardless of afr. In fact, I used to show students how to create detonation at idle on a motec so they know what it sounds like and feels like on a dyno, then have them richen the mixture and adjust timing, and I have never blown a motor like that in 10 years. I am a certified EFI tuner.
So afr of 14.59 or even 19 at idle will not blow up you motor. under load, it will not last long and that sounds more likely.
and to be honest, most tuners I have met usually do a poor job of tuning a car anyways. A real full tune on a car can take days to complete the correct way. all throttle position, all rpms, all loads. Most tuners don't do that because customers will get sticker shock.
when it comes to tuning, you get what you pay for.
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I was not referring specifically to it at idle more so just the numbers period, yes I'm fully aware that pretty much whatever air fuel it'll run with at idle is "safe". I was really speaking in reference to his ~19:1 under load.
I have tuned several cars in the past with excellent luck, and you're fully right, the tune I was most proud of took me probably 40 hours of street driving to get 100% right. I don't know of any other J swapped integras that got 45 mpg and ran 12's with an unopened motor straight from a junkyard.
I fully agree with tuning you get what you pay for, I personally would never trust a "off the shelf" tune for anything other than an otherwise stock car, or just to get one started on some big injectors, from there it's time to get into the maps and compensation tables. I think spending 4 figures on tuning is realistic, hence why I personally won't rush out there to throw on a turbo kit with an off the shelf tune. I don't even trust myself to tune my own cars.