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Thread: Tuning Help?
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Old 07-05-2007, 11:07 AM   #7 (permalink)
billc
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Join Date: Apr 2002
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Quote:
Originally Posted by shigspeed View Post
Also, I plan to run my VE up to 9K. I currently have the VE bin, but I haven't even gotten the motor installed yet so I'm just doing the recon right now. How much work would it take to get the map extended to 10K just in case?

I noticed you have yet to play with the timing map. Do you plan to do any tweaking on that? Have you decoded that yet?

_SHig

Whatever settings in the fuel and timing maps are in the bottom row (highest RPM) will be read and used by the engine when you exceed that RPM level. So, if your map goes to 7600 RPM, those fuel correction factors and timing advance instructions will be used at all engine speeds above 7600. As a result, if these values provide a good tune, there is no need to expand the map. If you want to expand the map, there is really no need to go beyond your fuel cut. To accomplish this should be pretty straightforward. In ROM Editor, you just double click on the RPM cell in the map and you can change the specification (RPM) for the row. But you only have 16 rows in the map to work with, so you will need to make the rows available at the high end by reducing the number or rows that you expend elsewhere in the map. After setting up your row structure, then you would have to adjust the fuel correction factors and timing advance instruction to make sense on the "landscape" of you new map (that is reconcile the data in the cells with the new RPM specs for the row).

Calum already tweaked the timing map on the BIN file that I am using. Until I get to a dyno, I do not plan to make any changes to the timing.

Bill
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