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Jordo! · 06-08-2012, 10:57 PM

Actually -- I hadn't noticed that. The richer AFR is almost definitely killing the power on the AT.

For a fully locking trans, there should be a negligible difference between the MT and AT locked in gear on a dyno.

I'm not sure why it's running richer, but that is definitely contributing.

Expect closer dynos with the same tune.

carbonBLUE · 06-08-2012, 10:59 PM

Quote:

Originally Posted by Jordo!

Actually -- I hadn't noticed that. The richer AFR is almost definitely killing the power on the AT.

For a fully locking trans, there should be a negligible difference between the MT and AT locked in gear on a dyno.

I'm not sure why it's running richer, but that is definitely contributing.

Yeah but one @feedbag is broken in and if I could lean the mixture out we should still have avout the same power, time will tell...

there are still alot of unknowns still... :/

Symbiont · 06-09-2012, 02:50 AM

Quote:

Originally Posted by Kevin@COBB

glad i could help you guys out last night!

Is Cobb planning on doing any tuning for the BRZ?

feedbag · 06-09-2012, 12:13 PM

Quote:

Originally Posted by Symbiont

Is Cobb planning on doing any tuning for the BRZ?

They have one at their research and development center in Austin, other than that I don't know what they have planned for it.

Jordo! · 06-09-2012, 05:57 PM

By same "tune", although I also mean aftermarket tuning, I really just meant "running the same tune" including the factory values -- I suspect the ECU was reading off of a different set of load cells in the fueling (and maybe timing) map as compared to the MT for whatever reason.

But -- more to the point, I mean that I predict a MT and AT running the same AFR and timing should be closer in the numbers they put down.

Was the AFR that rich for all pulls?

carbonBLUE · 06-09-2012, 09:49 PM

Quote:

Originally Posted by Jordo!

By same "tune", although I also mean aftermarket tuning, I really just meant "running the same tune" including the factory values -- I suspect the ECU was reading off of a different set of load cells in the fueling (and maybe timing) map as compared to the MT for whatever reason.

But -- more to the point, I mean that I predict a MT and AT running the same AFR and timing should be closer in the numbers they put down.

Was the AFR that rich for all pulls?

yes, the AFR almost is a whole difference of 1, thats a lot!

Jordo! · 06-10-2012, 09:36 PM

Quote:

Originally Posted by carbonBLUE

yes, the AFR almost is a whole difference of 1, thats a lot!

Hmm. Another dyno shootout had same results.

WTF, toyota?

EDIT: I wonder if this isn't a specific difference in the maps, per se, but rather that the AT makes more noise that triggers the knock sensor to mess with the tune.

carbonBLUE · 06-10-2012, 11:10 PM

Quote:

Originally Posted by Jordo!

Hmm. Another dyno shootout had same results.

WTF, toyota?

EDIT: I wonder if this isn't a specific difference in the maps, per se, but rather that the AT makes more noise that triggers the knock sensor to mess with the tune.

which one?

link?

Kevin@COBB · 06-12-2012, 11:48 AM

Quote:

Originally Posted by Symbiont

Is Cobb planning on doing any tuning for the BRZ?

Quote:

Originally Posted by feedbag

They have one at their research and development center in Austin, other than that I don't know what they have planned for it.

Yeah, feedbag said exactly all I know

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06-08-2012, 10:57 PM	#23
Jordo! Enjoy it, destroy it. Join Date: Oct 2009 Drives: Datsun Racing Hen Location: Blank Generation Posts: 824 Thanks: 6 Thanked 48 Times in 39 Posts Mentioned: 0 Post(s) Tagged: 2 Thread(s)	Actually -- I hadn't noticed that. The richer AFR is almost definitely killing the power on the AT. For a fully locking trans, there should be a negligible difference between the MT and AT locked in gear on a dyno. I'm not sure why it's running richer, but that is definitely contributing. Expect closer dynos with the same tune.

06-09-2012, 05:57 PM	#27
Jordo! Enjoy it, destroy it. Join Date: Oct 2009 Drives: Datsun Racing Hen Location: Blank Generation Posts: 824 Thanks: 6 Thanked 48 Times in 39 Posts Mentioned: 0 Post(s) Tagged: 2 Thread(s)	By same "tune", although I also mean aftermarket tuning, I really just meant "running the same tune" including the factory values -- I suspect the ECU was reading off of a different set of load cells in the fueling (and maybe timing) map as compared to the MT for whatever reason. But -- more to the point, I mean that I predict a MT and AT running the same AFR and timing should be closer in the numbers they put down. Was the AFR that rich for all pulls?

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