Tuning VE with boost | AEM
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Nicholas1996
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Last seen: 6 months 2 weeks ago
Joined: 07/22/2018 - 20:11
Tuning VE with boost

If I set the VE table load axis to KPA all i have is vaccum and the most I get is 0. If I set it to MAP/Baro it goes up to 100Kpa which is fine at the moment until I go with more boost. I have been tuning with Throttle% so far and I got the car dialed in on low boost (7 psi). When I switch the map load axis selection from Throttle% to Map/Baro my map is completely messed up. For example. 100% throttle at 5000rpm is 7psi. Now that 7 psi (48kpa) its not dialed in correctly. My VE number has now moved to 100 kpa and 5000rpm and it didnt change.

 

Thanks!

AEM_SB
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Last seen: 2 months 2 weeks ago
Joined: 06/07/2014 - 14:29
I don't think I understand

I don't think I understand exactly what you're trying to ask, but here are some comments that might be helpful. If you are working with the E46 M3 engine and it still has the original ITB DBW throttles, I would recommend to stick with the original VETable load axis from our E46 base map. Switching to MAP for the VETable will probably cause more drivability problems than it will fix. The ECU will automatically compensate for manifold pressure, for instance if you are using Throttle for the VETable load axis, the ECU will automatically use twice as much fuel for 100%TPS and 200kPa compared to 100% TPS and 100 kPa.  If you want the engine to run a richer lambda value at higher boost, adjust the targets in the LambdaTarget map and the ECU will automatically use more fuel in an attempt to hit the richer lambda target.

 

Hope that helps,

SB

Nicholas1996
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Last seen: 6 months 2 weeks ago
Joined: 07/22/2018 - 20:11
Awesome! Thanks! 

Awesome! Thanks! 

Nicholas1996
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Last seen: 6 months 2 weeks ago
Joined: 07/22/2018 - 20:11
Awesome! Thanks! 

Awesome! Thanks! 

Nicholas1996
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Last seen: 6 months 2 weeks ago
Joined: 07/22/2018 - 20:11
Also is the spark map better

Also is the spark map better of being set to throttle % ?