Quote:
Originally Posted by mike100
I took a little timing out of my Haibeck calibration right around 3800-4500 rpm in the middle Kpa map ranges. I used the tuner pro smoothing function to ramp the values. I left the 2000 and under range completely stock VE and spark etc for emissions testing and catalyst lifespan. I also cut back on AE in that range as well.
It still makes power at full throttle past 5000 rpm, just the 91 octane and 90 deg weather at dead sea level didn't work with the generic tune (not knocking Haibeck at all- pun intended), but nobody can possibly tune for all elevations and fuel blends across the country. The off-the-shelf tune did work well in Phoenix (1100 ft elevation) in 90 deg spring time temps- go figure- I think the LT5 is Kpa/ map sensitive, especially since 92 octane was the norm 20 years ago.
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Mike,
R U saying you cut back AE on the <2K range or in the 3800-4500rpm range?
The LT-5 uses a Speed Density system, so I guess it is MAP sensitive. The calibration you had may have been fatter in the higher kPa range since the motor would be operating there more often in Phoenix. Drier air too. Moving to SoCal, the VE could have been a bit lean in the lower VE range.