Miata Turbo Forum - Boost cars, acquire cats. - Lean spike at throttle low throttle input

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- - Lean spike at throttle low throttle input (https://www.miataturbo.net/ecus-tuning-54/lean-spike-throttle-low-throttle-input-109581/)

saoa4248

Jul 6, 2024 07:09 AM

Lean spike at low throttle input

2 Attachment(s)

Hi everyone, this is my first time posting on the forum.
I have a lean spiked at low throttle input on my 1999 supercharged mp62 6 psi. Ecu is Megasquirt 2 vers 3.3.1
The car was tuned and everything seems to be working fine but the lean spike(hesitation) is driving me crazy.
I have messed with Ae enrichment but is doesn't seem to be helping the lean spike. If I am driving at 4k rpm and releasing the throttle and reapplying it, their is a hesitation that last 1 second or less and then it goes smoothly.
I have included a log and a copy of the tune.
Thanks you for your response and sorry for my english!

Rrrracer

Jul 6, 2024 06:08 PM

Your Accel Enrichment thresholds are too high, so AE is not playing a role in the moments you are having trouble. Lower your TPSdot threshold % from 100 to 15 and retest, it should be much improved. The rest of the AE settings need some work as well, but this would be where to start.

https://cimg9.ibsrv.net/gimg/www.mia...aa60673a26.png

saoa4248

Jul 7, 2024 01:25 PM

Thank you, i've tried it and it worked ! I will play with AE more to make it near perfect !

sixshooter

Jul 7, 2024 02:29 PM

Excellent.

Rrrracer

Jul 8, 2024 02:08 AM

Quote:

Originally Posted by saoa4248 (Post 1652672)

Thank you, i've tried it and it worked ! I will play with AE more to make it near perfect !

Always happy to help :bigtu:

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