Timing ? 730ECM and CM software...
Thread Starter
Supreme Member
Joined: Aug 1999
Posts: 2,441
Likes: 1
From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Timing ? 730ECM and CM software...
After my 730swap I have done some scanning with CM software.
When I look at the scanresults the timing is 25 deg. in high rpm/load but when I look in TC It should be 28 deg in that area.
Whats the correct one?
/N.
When I look at the scanresults the timing is 25 deg. in high rpm/load but when I look in TC It should be 28 deg in that area.
Whats the correct one?
/N.
Supreme Member
Joined: Jul 1999
Posts: 2,844
Likes: 4
From: Maryland
Car: 2005 Subaru STI
Engine: 153ci of Turbo Power!
Transmission: 6-Speed
If you dialed in 28 at a specific load/RPM then it should be 28 at that specific load/RPM unless other factors are coming into play. First - you need to make sure that you are looking at the exact load/RPM. Double check - tripple check.
The 2 other major things that come come into play for part throttle operation are Octane Retard and knock retard (assuming Highway Mode is not implemented). If the ECM senses a lot of knock all the time then it will implement a long term reduction in spark using the octane retard routines. Consider zeroing out all the octane retard as a check. Also double check that you aren't getting any knock .... and, as previously stated, make sure you are looking at the correct areas when comparing data to TC.
Tim
The 2 other major things that come come into play for part throttle operation are Octane Retard and knock retard (assuming Highway Mode is not implemented). If the ECM senses a lot of knock all the time then it will implement a long term reduction in spark using the octane retard routines. Consider zeroing out all the octane retard as a check. Also double check that you aren't getting any knock .... and, as previously stated, make sure you are looking at the correct areas when comparing data to TC.
Tim
Thread
Thread Starter
Forum
Replies
Last Post