Typical Engine Efficiency Maps

[Herrubermensch]

Anyone interested in sharing the shape of their fully tuned engine efficiency maps in M1 Tune? Not so much the specific numbers, which can be all over the map, as it were, but the shape. I've obviously seen the shape of Motec's GTR map from the webinar, but would love to compare and contrast the shape of efficiency maps from various types and configurations of engines: turbo, supercharged, naturally aspirated, 4-8 cylinder, high overlap cams, different model engines, etc. I have not yet tuned my S62's M1 efficiency map, but have guessed as to its shape based on its stock torque curve and the fact that it is supercharged. I will be happy to share once fully tuned.

--Peter

[Stephen Dean]

Some Base Files that have been tuned to suit the vehicles.

Sea Doo RPX

Sea Doo.JPG (71.41 KiB) Viewed 11763 times

R56 Turbo DI

MINI.JPG (54.77 KiB) Viewed 11763 times

My15 EJ207

STi.JPG (67.18 KiB) Viewed 11763 times

Ford Fiesta DI

Fiesta.JPG (58.46 KiB) Viewed 11763 times

Toyota 86

86.JPG (59.75 KiB) Viewed 11763 times

[Herrubermensch]

Great stuff, Stephen. Thank you! Exactly what I was looking for. Absolutely fascinating. I hope some others will post their maps!

--Peter

[DentGuy]

Very intersting!!!!!! not at all what I was expecting to see based on what VE maps from other ecus look like. Is there a reason the M1 VE maps tend to have more peaks and valleys? Ive been taught that an air flow model should tend to be more smooth in its transisions.

I realize this is a loaded question...

Bob

[Stephen Dean]

The M1 VE curves, if they are done correctly, will match an overlay of the engines torque curve.

The MINI and Fiesta both breathe through 34mm restrictors, and are 1.6l DI engines, so they will have an early peak torque, and then tail off in the upper reaches of the rev range.

The STi and Toyota 86 are showing the changes that occur to the VE with the use of VVT on all four cams, and the natural resonances that occurs with the shape and size of their inlet and exhaust manifolds.