ECU retards ignition without knock

Nistune topics specific to the 6802 cpu

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IceManPL
Posts: 40
Joined: Wed Apr 22, 2009 7:10 pm

ECU retards ignition without knock

Postby IceManPL » Fri May 08, 2015 6:24 am

Hi
Strange thing ...
At WOT , ECU retards ignition until 4k RPM, and then at EXACTLY 4k RPM it adds 4-5 deg.
After that timing is almost value from the map, but i think still 1 deg retarded on 3-4 gear.
I removed knock sensing from the map.

Map and log attached.
Attachments
4gear_retard_2015-05-07_1908_08.csv
(43.46 KiB) Downloaded 35 times
map.bin
(16 KiB) Downloaded 36 times

Matt
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Re: ECU retards ignition without knock

Postby Matt » Fri May 08, 2015 5:59 pm

If you disconnect your knock sensor do you get the same issue?

Its like the ECU is pulling knock still (which it can do even with knock flags disabled. Normally those cells with knock sense enabled are used for pulling liming in knock limp mode, and the area used to determine if to switch to knock maps)

IceManPL
Posts: 40
Joined: Wed Apr 22, 2009 7:10 pm

Re: ECU retards ignition without knock

Postby IceManPL » Wed May 13, 2015 4:52 am

Heh, didn't have a chance, engine blown :roll:
Propably one of valves broke down.


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