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07-15-2010, 01:27 PM #11
Funny, I was recently going to ask if 13.5- 14 was too high at midrange RPM's.
For those that power up their AFR gauge separate from the engine, what does your reading "say" when the ski is "off". Is their a magic number that it's supposed to be? I believe (I can't remember for sure) mine says something like 21.7 (?).
07-15-2010, 02:00 PM #12
Wow. I know the stock tune is rich but didn't know it was that rich. I've had my LC-1 for forever now and just haven't finished hooking it up. Can't wait to see what the A/F is across the board with my stock boost wheel and reflashed ECU.
07-15-2010, 02:15 PM #13
With more boost and the same compression etc., the more fuel you will need to cool the piston top. With a stock wheel I wouldn't hesitate to run in the 13s and thats where some stock SDs run.
Also when running the Dynotune gauge/LC1 setup for airfuel that you are recalibrating everytime out.
07-15-2010, 08:38 PM #14
I'm very close to Desperado's from memory but I don't have the ability to log. I would say I agree with Gary that idle is a bit higher at 13.5 or so. 11.8-12.0 at WOT.
Gary--I think mine reads 21.something also when the engine is off. I'll confirm this next time out.
Interesting point Duke about recalibrating--I've never done this with mine.
What I've always wondered is about the extreme lean numbers I see (very momentarily) when I give it a little bit of gas normally shortly after startup. I see 15+ for a very short time. I've just always thought it was some sort of phenomena.
My .02 is that a ski that is 10.x is too rich and needs to be leaned out.
07-15-2010, 09:29 PM #15
07-15-2010, 09:50 PM #16
Craig..... lean reading after startup is because your combustion chambers are not at operating temperature and your ECU calibration does not compensate enough for this situation. Nothing to worry about if this is a momentarily situation which happens below 6,000rpm.
07-15-2010, 09:51 PM #17
- Join Date
- Jul 2005
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07-15-2010, 10:51 PM #18
recalibrate must be done in fresh air,
you might flow fresh air throght exthust pipe and recalibrate it.
07-15-2010, 11:04 PM #19
I'd like to know how to calibrate it too....
07-16-2010, 07:41 AM #20
LC-1 Calibration Procedures
Here's the link to the installation instructions from Dynotune and they state the calibration procedures:
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