I am in the process of tuning in my VE tables for my 7730ecm speed density system and have made very good progress and improvements so far. My question is that when I make constant load accelleration runs, the INT value I get in first gear is different than the INT value I get in 2nd gear??? My MAP values are identical in both gears, exact same rpm, and in 1st gear my INT=128 and in 2nd gear, BLM=137???? This seems very funny to me, the only difference I can see is a different rate of acceleration. Anyone seen this??? Should I tune in my VE for 1st gear or second???

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Dave Zelinka

 

Changing the gearing changes the torque multipication, and thus the engine load.
Set the VE tables for the gear you normally drive in, ie in an auto 4th (or high).

While 128 is nice, it's not going to be there all the time.

 

Grumpy: If my MAP kPa values are identical in each gear, doesnt that mean the "engine load" is also the same at both conditions???

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Dave Zelinka