The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

Flashable ECU with 6-bolt swap CAS latency?

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Melbowski

15+ Year Contributor
95
12
Mar 23, 2008
Reese, Michigan
I've been flashing my ECU for some time now, and I've been contemplating doing the swap to my Stealth. While browsing their forums I came across this thread:

1G here running a flash ECU. Need to take some timing out, as its more advanced with a flash ecu and 1G cam sensor setup.

The timing is off 3-4 degrees, but that is only at the upper RPMs. Due to the design of the sensors, the timing difference is RPM based.

To change the timing values, you need to take the value the ECU calls for, and subtract RPM*.0005 from that timing value.

So for example if the ECU calls for 20 degrees of timing at 7000 RPM, the value you would need to enter is 16.5.

But at 1000 RPM you only need to take out .5 degrees of timing (20 - (1000*.0005). I always rounded down to be safe.

So now in that cell I'd have 16, but because of the latency differences, I'm actually getting right at 20 degrees.

It dawns on me that we have a similar setup when doing the 6-bolt swap, but I've never seen anyone bring it up with flashable ECU's. I personally use the earlier optical sensor rather than the later hall-effect type, and I recall reading that it throws off timing slightly. So am I right to assume we have the same latency issue? Does anyone know if our correction formula is the same?

I know it's only a few degrees, but I like the idea of knowing the actual number that comes out based on what I put in. I wonder if switching to the later hall-effect sensor corrects this issue. Any thoughts would be appreciated, thanks in advance.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Latest Classifieds

  • For sale 2g 2G Mishimoto Radiator & Fan Shroud
    2G Mishimoto Radiator & Fan Shroud $200 + shipping and paypal feesYou must be registered to...
    • jersygsx
    • Updated:
    • Expires
  • For sale 2g 2G Power Window Switches ( tested and hardware included )
    2G Power Window Switches $55 + shipping and paypal fees* Tested 6/2/26 * Hardware included *...
    • jersygsx
    • Updated:
    • Expires
  • For sale VIRGIN 4G63 6-BOLT TURBO HEAD
    Came off a virgin stock AWD Auto 1G DMS (91), also have matching block and crank which are also...
    • The_Partout_Spot
    • Updated:
    • Expires
  • For sale 1G DSM 4G63 6-BOLT TIMING COVER
    Used, see condition in photos. Buyer covers shipping / fees.
    • The_Partout_Spot
    • Updated:
    • Expires
  • For sale Garage clean out
    Changing setups on the car and getting rid of some stuff as well that's been laying around. Will...
    • 92GSXtacy
    • Updated:
    • Expires
Back
Top