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Hello
My car is a 2.5l duratec miata tuned with stock ecu (on romdrop).
Originaly it had a 2.0l with more compression ratio. After the swap, I bump up the timing a bit, picture below is my current timing.
Im on e85, I have egr and a
turbo, (not sure if it really matter).
I checked a remote tune a "miata specialist" did for me last year, it had 5 to
10 degrees less.
I looked a log from a stock 2.5L duratec I found randomly online, it has 5 degrees
more on some spots.
Weekend/track day car. Do you think it's worth spending time and money to tune timing on dyno? (2h drive+300dollar for rental)
Adding or removing 5° to my current cruise timing can really improve fuel efficiency?
For WOT I plan to use virtual dyno. I bought tuner nerd knock monitor just to make sure I don't get any knock.
Cheers
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Capture-current-timing.JPG
Could you share the 2.5 timing map?
At near 50 degrees I suspect you have gone too far and may want to go back to the values your tuner set. It's unlikely you're improving cruise efficiency on an order that would recoup the money you are considering spending on dyno time. It's more likely valuable if you want to work on higher load areas.
