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Breaking up during boost around 5k rpms

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Old Feb 12, 2025 | 02:20 AM
  #1  
BrokenRedMiata's Avatar
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Default Breaking up during boost around 5k rpms

Hey gents trying to get some advice. My miata is breaking up pretty heavy after about 5k rpms in boost. Only in boost tho not when i just rev it up normally.

Plugs are gapped at .030. Maybe need new sparkplug wires? Currently got duralast golds so probably should get some ngk?

Maybe accel enrich is bad? I notice that if i get off the gas a bit the car feels a bit faster in rpms.

Any help is appreciated! You guys are the best.

also i really hope im attaching the right tune...
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turbo5.mlg (1.42 MB, 25 views)
File Type: msq
Turbo.20.msq (89.0 KB, 25 views)
Old Feb 12, 2025 | 11:15 AM
  #2  
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Have you tuned your fuel table at all? The log is showing 10 AFR everywhere, even when cruising. Your gauge likely only reads down to 10 AFR, so you're even richer than that.
EGO is pulling 10%, which is probably all it can do.

IMO you're going to get better results if you spend some time watching a few tuning series on YouTube.
Old Feb 12, 2025 | 11:21 AM
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Originally Posted by SimBa
Have you tuned your fuel table at all? The log is showing 10 AFR everywhere, even when cruising. Your gauge likely only reads down to 10 AFR, so you're even richer than that.
EGO is pulling 10%, which is probably all it can do.

IMO you're going to get better results if you spend some time watching a few tuning series on YouTube.

haven't done much tuning simply because I have a bad exhaust leak from turbo to downpipe (sitting at the exhaust shop waiting for them to fix it up). That being said I know i definitely gotta tune and so my thinking has been either spark is being weird or I’m drowning it in fuel

also I know a bit about tuning but I’m not expert I’m sorry. Can you explain to me what Ego means and what does it pulling 10% mean/do?

thanks man I appreciate you showing interest to help.
Old Feb 12, 2025 | 11:42 AM
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It's an algorithm/setting that tries to correct your fueling to hit your target AFR. Google and the search bar are your friend.
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