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post #1 of 69 (permalink) Old 08-12-2019, 07:32 PM Thread Starter
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Question New AMS tune

Today was the day I replaced my previous Ecutek tune with one from AMS. The difference is amazing! I canít wait to get it on the Dyno, but when looking at my logs, I see Torque Actual at peak at 893nm at about 4800 rpms.
Converting 893nm to ft lbs is 659. The car feels amazing but 653 ft lbs sounds unrealistic.

Thoughts?

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post #2 of 69 (permalink) Old 08-12-2019, 09:34 PM
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I'd be shocked if you're actually getting 659 foot-pounds of torque. Somethings not right.

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post #3 of 69 (permalink) Old 08-12-2019, 09:49 PM Thread Starter
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Originally Posted by Avedis53 View Post
I'd be shocked if you're actually getting 659 foot-pounds of torque. Somethings not right.
Agree. Is the Torque Actual accurate in the data log? It’s 350nm greater than my previous tune. I can post the relevant section of the datalog if it would be helpful.

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post #4 of 69 (permalink) Old 08-12-2019, 09:50 PM
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Originally Posted by Q60NH View Post
Agree. Is the Torque Actual accurate in the data log? Itís 350nm greater than my previous tune. I can post the relevant section of the catalog if it would be helpful.
Since I haven't migrated to an EcuTek tune yet, I'll let someone who is familiar with EcuTek logging answer that question.

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post #5 of 69 (permalink) Old 08-12-2019, 10:39 PM
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I got 645 tq at 3,225 rpm in my last EcuTec log peak. Just as a comparison. What ever that means.
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post #6 of 69 (permalink) Old 08-12-2019, 10:47 PM Thread Starter
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Originally Posted by JohnInNH View Post
I got 645 tq at 3,225 rpm in my last EcuTec log peak. Just as a comparison. What ever that means.
As reported by the Datalog which is in nm?
645nm = 475.7 ft lbs. That sounds about right.

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post #7 of 69 (permalink) Old 08-13-2019, 12:23 AM
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Quote:
Originally Posted by Q60NH View Post
Today was the day I replaced my previous Ecutek tune with one from AMS. The difference is amazing! I can’t wait to get it on the Dyno, but when looking at my logs, I see Torque Actual at peak at 893nm at about 4800 rpms.
Converting 893nm to ft lbs is 659. The car feels amazing but 653 ft lbs sounds unrealistic.

Thoughts?
I'm not sure how the ECUTEK software is logging that information, It's very possible the log is looking at how much torque the engine is producing at the transmission via some type of sensor.
Or (and most likely) providing an estimate based on wheel-speed, acceleration (G's) and speedometer etc.

Regadless the only way we can validate is at the wheel and considering 15-20% for drive-line loss and you'd be in the 520-550ft-TQ at the wheel on the Dyno.
Which makes sense as that is what many of us would consider the limit for a stock transmission, I'd have some serious concerns if AMS had you running
over 600Ft-TQ at the wheel on a stock transmission...

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post #8 of 69 (permalink) Old 08-13-2019, 01:28 AM
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Quote:
Originally Posted by Q60NH View Post
As reported by the Datalog which is in nm?
645nm = 475.7 ft lbs. That sounds about right.
Yes, nm. My tq dropped off after the peak, held 600's till 4425 RPM then started to slowly drop after that. At 5000+ RPM your # is very high, a very hot tune. A "dyno" map.

At 400ish hp/450ish tq my transmission was showing signs of overheating b4 my Level 10 upgrades.

If that's what you are getting on a dyno. AMS has pretty hot tunes from what I've seen. I don't think I'll see those # on the 21st when I redyno my car. I want a street/track tune. Pavement is much different than a dyno, and I want a safe/reliable tune. Seb has made himself available while my car is on the dyno the 21st to look at my data logs to compair to the log I just sent him. Not sure if he will make any changes to my maps b4 I go the 21st.
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post #9 of 69 (permalink) Old 08-13-2019, 05:18 AM
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Q60NH:
Great numbers. What is the bank1/bank2 psi you are logging.
I also have an AMS EcuTek tune. On 93 octane I am seeing ~ 22psi. (Data log shows max 37psi - 14.8 = 22.2 psi)
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post #10 of 69 (permalink) Old 08-13-2019, 07:31 AM
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Can the transmission handle the extra torque? I thought I read that the Jatco JR711E transmission is rated only to below 600Nm?

The QX80 has 560Nm and the hybrid 546Nm.

Last edited by mva; 08-13-2019 at 08:24 AM.
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