2023 BRZ Baseline Dyno pulls at COBB Tuning - Road to SLB Ep. 2 | My car made 16whp by doing nothing

A few weeks ago I got to put my 2023 BRZ on the dyno at COBB Tuning to help with some baseline R&D! The car was 100% stock at the time and our number one goal was to confirm a very interesting behavior that COBB noticed on the 2022 BRZ that they own. In short...the cars actually make more power simply by getting them warm...like as much as 10% to the wheels in some cases. That's with zero modifications or tuning changes, totally stock. My car went from 207whp to 223whp with no changes at all.

Ultimately, we are still determining what to do with this info and at the moment, it's just interesting data and that's it. But it is absolutely worth considering as people tune and modify these engines. The more we can understand how they work as a baseline, the better we can understand how to effectively modify them.

Check out our previous work here:

[nicholasdugdale]

What caught me off guard is when he said "we should see slightly more here too" when showing the "corrected figures". I'm no expert but every time I have shown corrected SAE figures the power figures were notably lower vs uncorrected.

[lprmesia]

Did you map any of the engine and coolant temps during each pull? Would be interesting to understand what counts as "warmed up" vs "hot" to see what's optimal. Thoughts?

[raymohwinkel]

So they are rated at 228 crank but dyno 223? Maybe its 228 when cold minimum and 250 when hot 😀

[Ksport]

which injector (port or direct) can be improved for more umphf? what power levels are the stock injectors capable of? instead of making more power, is it easier to make the car faster by modding other areas of the car (wheels/tires, suspension, driveshaft, etc) vs mucking with the engine tuning? You know, add lightness. 🏁

[mattpapa]

Hopefully mine gets slightly better. My cobb tuning kit will arrive on Saturday. And I'm going to install headers pretty soon as well 🙏

[imanenigma]

Here in Australia, we run the recommended 98 octane (no ethanol) fuel,
which is our premium.
I wonder if it would make any more horsepower or not?
Also, I understand the increase in power due to warm thinner fluids etc
but why would that change the torque dip for example?
I would think warm v cold power/torque graph lines would mirror
each other regarding an increase or decrease in power or
am I missing something?

[nats]

What baffles me is that if the car is only rated at 228 crank, and all dynos I see registers 203-223 wheel, that puts the car about 250, more or less. Understated, in short. Now, all the top speed figures and videos I see say 140-143 mph. No way! Realistically, at say 250 hp, 0.276 drag coefficient, 5th gear ratio at 1:1, 0.767 at 6th, the car can go near 160 mph. I have a feeling the car is "electronically" limited to about 6, 000 rpm at 6th, not drag limited.

[autosenses]

This is interesting find about this engine. It likes heat. Normal street driving operating oil temps on this car is 195, after a few pulls it jumps to 220-30 degrees F.

What were temps on the 220hp pull?

[ramerm]

I think default IAM is 0.7 while you pulling the iam increase and power as well, ignition goes up

[Drifthaze]

did you rip out the charcoal filter out at least

[ScottyBeMore]

when you say 100% stock did you pull the carbon filter out might have more power on the table after warm up
with that being said one more time no carbon please

[artblackwood]

Don't you want to be in the 1:1 gear?

[-loki-]

So you add an oil cooler with a 180 thermostat and you end up with less power - lol.

[CPE-ju]

I would say the Dyno is NOT giving reliable numbers - NOONE except you got these numbers without touching intake, engine & exhaust

[CPE-ju]

Something is NOT right - you made ~225 WHP withOUT any changes - and ALL other guys make that with changes !!!