2020 Supra vs 2021 Supra Dyno Results

OpenFlash Performance

Member
Gold Sponsor
First Name
Shiv
Joined
Jul 5, 2020
Posts
23
Reaction score
61
Location
SF Bay
Car(s)
Supra, 458, FF, GT3, CX9
Greetings,
Here is a graph comparing a 2020 Supra to our 1 day old 2021 Supra. Both 100% stock. Both on the same dyno running California 91oct premium fuel. the difference in power output above 5000rpm is profound where the 2021 car enjoys a 40-50 wheel HP advantage. Full disclosure: This is the only 2021 we have run on our dyno. So I don't like to make assumptions based upon a sample pool of one. It's more than likely that it is representative of all other 2021 cars but until I get more samples, I can only assume this. The 2020 car is in line with the other 2020 cars we have tested on this same dyno. That said, Toyota's hp increase claims of 47hp between the 2020 and 2021 seems right on the money. Although the power rating for both the 2020 and 2021 seem to be conservative (ie, car makes power power than claimed). It's really impressive that they decided to make such a big power bump after the first production year.

uFKN24.jpg


Ebu6uH.jpg




Advertisement


 

Dannyvandelft

Well-Known Member
First Name
Danny
Joined
Jan 15, 2019
Posts
1,116
Reaction score
1,261
Location
44133
Car(s)
Ordered A91 edition Supra
Nice. Falls right in line with the C&D video. Their made 388 to the wheels so I'm guessing that was on 93 oct.
 
OP
OpenFlash Performance

OpenFlash Performance

Member
Gold Sponsor
First Name
Shiv
Joined
Jul 5, 2020
Posts
23
Reaction score
61
Location
SF Bay
Car(s)
Supra, 458, FF, GT3, CX9
  • Thread starter
  • Thread Starter
  • #3
Nice. Falls right in line with the C&D video.
Yes it was comforting to see a similar delta in both tests. C&D uses a dyno that tends to read a bit high. But the % difference between the 2020 and 2021 is right in line with what we saw. Historically, there have been press cars that have been ahem.. tweaked by the manufacturer to make more power than production cars. Thankfully this doesn't seem to be the case with the Supra.
 

kona61

Well-Known Member
First Name
Josh
Joined
Mar 25, 2018
Posts
983
Reaction score
1,328
Location
San Bernardino-ish, CA
Car(s)
5G 4Runner, MK7 Golf, AZW LE Supra
Vehicle Showcase
1
Yes it was comforting to see a similar delta in both tests. C&D uses a dyno that tends to read a bit high. But the % difference between the 2020 and 2021 is right in line with what we saw. Historically, there have been press cars that have been ahem.. tweaked by the manufacturer to make more power than production cars. Thankfully this doesn't seem to be the case with the Supra.
That's great! But the real question is: are you releasing an Open Flash Tablet?
 

F1 Silver Arrows

Well-Known Member
Joined
Oct 16, 2018
Posts
375
Reaction score
710
Location
Circuits around the world
Car(s)
Mercedes F1 W07 Hybrid
Yes it was comforting to see a similar delta in both tests. C&D uses a dyno that tends to read a bit high. But the % difference between the 2020 and 2021 is right in line with what we saw. Historically, there have been press cars that have been ahem.. tweaked by the manufacturer to make more power than production cars. Thankfully this doesn't seem to be the case with the Supra.
Wait, but isn't yours a dynojet which reads the highest of all dynos that are normally in use in NA? Wouldn't that mean the Supra is actually making way less horsepower to the wheels than what C&D found out?

Also with those numbers then is it safe to say that the 2021 Supra is making ~450-460 horsepower at the crank using approximately 15% drivetrain loss because that's what I was thinking after C&D's test. Also they've admitted that there was some more room to go implying that it could have gone higher than 388whp.
 
OP
OpenFlash Performance

OpenFlash Performance

Member
Gold Sponsor
First Name
Shiv
Joined
Jul 5, 2020
Posts
23
Reaction score
61
Location
SF Bay
Car(s)
Supra, 458, FF, GT3, CX9
  • Thread starter
  • Thread Starter
  • #8
Wait, but isn't yours a dynojet which reads the highest of all dynos that are normally in use in NA? Wouldn't that mean the Supra is actually making way less horsepower to the wheels than what C&D found out?

Also with those numbers then is it safe to say that the 2021 Supra is making ~450-460 horsepower at the crank using approximately 15% drivetrain loss because that's what I was thinking after C&D's test. Also they've admitted that there was some more room to go implying that it could have gone higher than 388whp.
Car and Driver also used a Dynojet for tested the 2020 and 2021 Supra. But as with all dynos, there is always going to be some variance in calibration. In this case, the Dynojet that C&D used looks to read a bit higher than the Dynojet we used. I think assuming a 15% driveline loss is questionable. No real way to accurately calculate BHP from WHP so I don't bother estimating BHP from chassis dyno results.
 

Dannyvandelft

Well-Known Member
First Name
Danny
Joined
Jan 15, 2019
Posts
1,116
Reaction score
1,261
Location
44133
Car(s)
Ordered A91 edition Supra
Wait, but isn't yours a dynojet which reads the highest of all dynos that are normally in use in NA? Wouldn't that mean the Supra is actually making way less horsepower to the wheels than what C&D found out?

Also with those numbers then is it safe to say that the 2021 Supra is making ~450-460 horsepower at the crank using approximately 15% drivetrain loss because that's what I was thinking after C&D's test. Also they've admitted that there was some more room to go implying that it could have gone higher than 388whp.
The number the car makes doesn't matter. What matters is the difference between the 2 when measured back to back. There's way too many variables from different locations, altitude, humidity, and so on. The only constant is the power difference between the '20 and the '21.
 
Last edited:

tadda

Well-Known Member
First Name
Tom
Joined
Dec 14, 2019
Posts
808
Reaction score
899
Location
Arizona
Car(s)
2020 GR Supra Premium
Vehicle Showcase
1
Now we need tuned side to side numbers
This is what most would really like to see...Looking at the two curves it appears that the 2021 has less boost taper...

@OpenFlash Performance were you able to log or have the ability to capture the 2021 boost profile during the dyno run?
 

Ale81

Well-Known Member
Joined
Mar 12, 2017
Posts
85
Reaction score
65
Location
Central KY
Car(s)
2021 Supra 3.0 Premium, 2018 Lexus RX350
Wait, but isn't yours a dynojet which reads the highest of all dynos that are normally in use in NA? Wouldn't that mean the Supra is actually making way less horsepower to the wheels than what C&D found out?

Also with those numbers then is it safe to say that the 2021 Supra is making ~450-460 horsepower at the crank using approximately 15% drivetrain loss because that's what I was thinking after C&D's test. Also they've admitted that there was some more room to go implying that it could have gone higher than 388whp.
I can't remember where I read it and will keep looking but I read that modern drivetrains have approximately 7-8% loss instead of 15%. I'm no expert, just relying what I read:)
 

65sohc

Well-Known Member
First Name
Ken
Joined
Mar 8, 2020
Posts
324
Reaction score
148
Location
Fresno, CA
Car(s)
2020 Supra, 65 GTO restomod, 66 Mustang restomod
I can't remember where I read it and will keep looking but I read that modern drivetrains have approximately 7-8% loss instead of 15%. I'm no expert, just relying what I read:)
I read the same thing. The ZF trans is supposed to be particularly efficient.
 

Advertisement











 


Advertisement


Top