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Critique my tune

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Old Oct 14, 2025 | 11:17 AM
  #1  
casper's Avatar
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Red face Critique my tune

Hi all,

I have a MX5 1.6 NB 2003.
It will be supercharged with a Eaton M45 running Kavs reduction, and I have tuned the boost end from 100-170KPA with the supercharger.
However at the moment I am having to run without.
I am also running stock injectors.

My acceleration is extremely sluggish in any gear, I have also noticed running with speeduino, vs stock ECU, theres a big difference in engine sound, might be configuration I'm not too sure.
My AFR's seem fine and reflect my table through out driving however it is awfully slow.
I'm using MAP not TPS.

I have attached my tune.
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File Type: msq
mx5.msq (60.9 KB, 24 views)
Old Oct 16, 2025 | 11:48 PM
  #2  
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your timing in boost is insanely retarded, im sure it feels like a rock. Figure out a set of det cans, and tune your ignition timing, or take it to a dyno.
Old Oct 17, 2025 | 04:32 AM
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Originally Posted by Bloopdog
your timing in boost is insanely retarded, im sure it feels like a rock. Figure out a set of det cans, and tune your ignition timing, or take it to a dyno.
What do you think of below boost areas?
As it just feels extremely sluggish accelerating, without the supercharger on.
Old Oct 17, 2025 | 05:21 PM
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I wouldn't be surprised if you're knocking a good bit. Running 30 degrees everywhere is probably more timing than the engine wants. Assuming you're base timing is correct, I'd horizontally interpolate the columns from 1800-7K. I set the cruising areas to 35, but you should get something like this.


You can/should smooth out the hard transitions, but I'd bet it will drive better with the map above compared to what you have. The boosted cells are still a trainwreck and you should probably start reading/researching if you can't tell that at a glance
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