Load differences per gear
Thread Starter
Joined: Aug 2003
Posts: 14,094
Likes: 1,093
From: Mid-Hudson, NY
Load differences per gear
I've seen some assumptions on EvoM that load varies gear to gear. From a ton of datalogging I've known that this is not always a correct assumption.
Today I had some extra time on my hands and was working on my personal Evos tuning, so I decided to go through the gears and get some logs to show.
My one disclaimer is that I do most of my tuning and work with RPM based ecu-controlled boost Evos. MBC controlled Evos might be different.
Log of 1st through 3rd gear:
Another log of 2nd through 4th gear:
As you can see, the load only varies a very small amount, but not enough to land the tune into different load cells per gear and rpm. In this example, it stays in the same fuel and timing cells gear to gear.
Boost was logged with a JDM map sensor and the log reflects this. The JDM map sensor has no smoothing in logging so you might see some "blips" in the boost in the log.
Today I had some extra time on my hands and was working on my personal Evos tuning, so I decided to go through the gears and get some logs to show.
My one disclaimer is that I do most of my tuning and work with RPM based ecu-controlled boost Evos. MBC controlled Evos might be different.
Log of 1st through 3rd gear:
Another log of 2nd through 4th gear:
As you can see, the load only varies a very small amount, but not enough to land the tune into different load cells per gear and rpm. In this example, it stays in the same fuel and timing cells gear to gear.
Boost was logged with a JDM map sensor and the log reflects this. The JDM map sensor has no smoothing in logging so you might see some "blips" in the boost in the log.
Thread Starter
Joined: Aug 2003
Posts: 14,094
Likes: 1,093
From: Mid-Hudson, NY
Lean spool is disabled. 11.5 straight in each gear after tip-in enrichment that I am still working on.
Last edited by razorlab; Jul 30, 2008 at 07:59 PM.