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-   -   CEL flashes for knock, stock Miata (https://www.miataturbo.net/megasquirt-18/cel-flashes-knock-stock-miata-87850/)

borka 02-21-2016 03:14 PM

CEL flashes for knock, stock Miata
 
Mounted MS2E under the steering column, what a PITA to mount this box.
I just zipped tied it to other big plugs/wires, sits very secure.

https://www.miataturbo.net/attachmen...ine=1456084443


Did the timing, and calibrated TPS.

Enriched the base VE map, as the base map was WAY lean, idle was 20 AFR on base map, so i just added 20 points across the board, which is too rich, but Autotune will bring it back to target.

I got the closed loop idle dialed in pretty well, except AC, it dips way too low, so next i will figure out how to make the rpm go up more when AC is on.

one major problem:

My CEL keeps blinking when i put load on the engine, even at low rpms, and more often in higher revs. this has me worried as i think it detects knock and CEL flashes.
AFR's are rich, 12-13 when under load, so its not knocking due to lean condition

Car is still stock, no turbo, only header and muffler, thats it.

false reading? should i raise the threshold of knock? (how?)

here is my timing table, its just Rev's base table:
https://drive.google.com/file/d/0B38...ew?usp=sharing

here is the rough tune from Autotune, its still very rough as i am afraid to do redline runs as CEL keeps flashing like crazy at high rpm's.
https://drive.google.com/file/d/0B38...ew?usp=sharing

Second problem, I cant seem to figure out how to log properly, when i run logging in tuner studio, it does log, but when i open the file in megatune viewer, very few fields are actually being logged, so i cant even run VE Analyzer.
here is the log file that it takes:
https://drive.google.com/file/d/0B38...ew?usp=sharing


Cant wait to tune this properly, so i can start bolting on turbo bits.

Christopher Wisdom 01-16-2021 11:21 PM


Originally Posted by borka (Post 1309728)
Mounted MS2E under the steering column, what a PITA to mount this box.
I just zipped tied it to other big plugs/wires, sits very secure.

https://www.miataturbo.net/attachmen...ine=1456084443


Did the timing, and calibrated TPS.

Enriched the base VE map, as the base map was WAY lean, idle was 20 AFR on base map, so i just added 20 points across the board, which is too rich, but Autotune will bring it back to target.

I got the closed loop idle dialed in pretty well, except AC, it dips way too low, so next i will figure out how to make the rpm go up more when AC is on.

one major problem:

My CEL keeps blinking when i put load on the engine, even at low rpms, and more often in higher revs. this has me worried as i think it detects knock and CEL flashes.
AFR's are rich, 12-13 when under load, so its not knocking due to lean condition

Car is still stock, no turbo, only header and muffler, thats it.

false reading? should i raise the threshold of knock? (how?)

here is my timing table, its just Rev's base table:
https://drive.google.com/file/d/0B38...ew?usp=sharing

here is the rough tune from Autotune, its still very rough as i am afraid to do redline runs as CEL keeps flashing like crazy at high rpm's.
https://drive.google.com/file/d/0B38...ew?usp=sharing

Second problem, I cant seem to figure out how to log properly, when i run logging in tuner studio, it does log, but when i open the file in megatune viewer, very few fields are actually being logged, so i cant even run VE Analyzer.
here is the log file that it takes:
https://drive.google.com/file/d/0B38...ew?usp=sharing


Cant wait to tune this properly, so i can start bolting on turbo bits.


Did you figure out the cel I am having a similar issue.


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