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BRZ Second-Gen (2022+) -- General Topics General topics for the second-gen BRZ


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Old 09-17-2021, 11:28 AM   #113
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Originally Posted by Kona61 View Post
That looks sooo much better.

This chart has the opposite scaling problem of the first one, so the y-axis is very short. 0 torque is more than halfway up the chart, most of the Y-axis shows negative torque numbers.

Weird way to do it but does make for a better looking chart.
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Old 09-17-2021, 11:38 AM   #114
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That dip is weird. Starts around 3500, hits its nadir at about 4300, gone by about 4500. It’s higher in the rev range than I’d hoped for; you're probably going to get dropped into it after every shift (and certainly every shift before redline).

They even circle it at about 6:45. It stood out to them too.

Body of knowledge continues: car makes low 190s whp give or take, axle back exhausts add a rounding error’s worth of HP.

I’m hoping a light application of FI can erase the dip and get me to ~270whp since that’s about what the 2014 Cayman S had that was the best matched engine/chassis I’ve ever personally driven. If this can make the same power at basically the same weight in the nicest chassis south of that Porsche, I think I’ll be happy.
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Old 09-17-2021, 11:42 AM   #115
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That dip is weird. Starts around 3500, hits its nadir at about 4300, gone by about 4500. Itís higher in the rev range than Iíd hoped for; you're probably going to get dropped into it after every shift (and certainly every shift before redline).

They even circle it at about 6:45. It stood out to them too.

Body of knowledge continues: car makes low 190s whp give or take, axle back exhausts add a rounding errorís worth of HP.

Iím hoping a light application of FI can erase the dip and get me to ~270whp since thatís about what the 2014 Cayman S had that was the best matched engine/chassis Iíve ever personally driven. If this can make the same power at basically the same weight in the nicest chassis south of that Porsche, I think Iíll be happy.
HKS announced that their supercharger reaches 340hp (not to wheels I would assume). 270whp should be not hard with a good kit from edelbrok/harrop/jackson
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Old 09-17-2021, 11:48 AM   #116
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HKS announced that their supercharger reaches 340hp (not to wheels I would assume). 270whp should be not hard with a good kit from edelbrok/harrop/jackson
Well the Edlebrock on the previous gen hit 250whp and offered a 3/36k powertrain warranty.

So yeah, I wouldn't imagine 20 more wouldn't be a big deal.
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Old 09-17-2021, 11:50 AM   #117
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I am waiting to see a dyno chart with headers and a tune on an otherwise stock car. That is all I am planning to do to the powertrain for a long time.

When/If Edelbrock gets a reliable kit together again for this gen I would find it hard to resist. But that takes a long time, years maybe.
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Old 09-17-2021, 11:54 AM   #118
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I am waiting to see a dyno chart with headers and a tune on an otherwise stock car. That is all I am planning to do to the powertrain for a long time.

When/If Edelbrock gets a reliable kit together again for this gen I would find it hard to resist. But that takes a long time, years maybe.
I am with similar mindset. If a kit hits 230/240 whp with E85, then I will be probably jumping and buying the header/flex kit.
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Old 09-17-2021, 01:57 PM   #119
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Originally Posted by Pete View Post
That looks sooo much better.

This chart has the opposite scaling problem of the first one, so the y-axis is very short. 0 torque is more than halfway up the chart, most of the Y-axis shows negative torque numbers.

Weird way to do it but does make for a better looking chart.
Yea, I don't know why it's so difficult to present data properly on a chart lol.
I think at this point after having read reviews and whatnot, the torque curve is not a concern.

I think to put it this way: journalists who were specifically looking for a torque dip to criticize did not or minimally complained about it.

So I honestly am okay with it being there as long as how I think it feels correlates with what I've been hearing.
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Old 09-17-2021, 02:03 PM   #120
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There you go, now everyone can calm down about the way the torque curve looks and how it compares. There's still about a 20 ft-lb drop there from around 19.5 to 22 Kgm but it just looks much nicer on a dyno like this and on a graph that is not so stretched. This gen is making more power and torque everywhere, you won't be feeling that dip.
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Old 09-17-2021, 02:03 PM   #121
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Here's a screenshot where you can actually see the rpms.

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Old 09-17-2021, 02:08 PM   #122
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Originally Posted by Kona61 View Post
…journalists who were specifically looking for a torque dip to criticize did not or minimally complained about it.
Correction: “…journalists who were specifically told by the Toyota and Subaru marketing departments in a pre-drive presentation that the torque dip was addressed did not or minimally complained about it.”

My concern is that most of those peeps have demonstrated that their butt dynos aren’t nearly as well calibrated as their regurgitate-lines-fed-directly-to-them-from-the-marketing-department-that-flew-them-out-there dynos. Seeing the same verbatim quips show up again and again across dozens of reviews has me convinced those dynos are WELL tuned. Given the mounting evidence, I do think we can retire the “torque dip is nearly gone” line as bunk.

That said, man I hope you’re right. Or at least that FI will fill the hole like it seemed to on the FA20.
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Old 09-17-2021, 03:07 PM   #123
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Originally Posted by Pete View Post
I am waiting to see a dyno chart with headers and a tune on an otherwise stock car. That is all I am planning to do to the powertrain for a long time.

When/If Edelbrock gets a reliable kit together again for this gen I would find it hard to resist. But that takes a long time, years maybe.
Even just proper headers helped eliminate the dip on 1st gen, without a tune. I might go that route to help maintain warranty until I eventually supercharge it. The red is just headers, no tune, green is tune.
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Old 09-17-2021, 03:18 PM   #124
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Quote:
Originally Posted by SockMonkey View Post
Even just proper headers helped eliminate the dip on 1st gen, without a tune. I might go that route to help maintain warranty until I eventually supercharge it. The red is just headers, no tune, green is tune.
Curious where you got this dyno... that's an awful lot of gain up top without a tune, I don't know that I buy it.

EDIT: Second graph down is a little more realistic in terms of expectations for just a header without a tune.
https://www.ft86club.com/forums/showthread.php?p=938787
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Old 09-17-2021, 03:35 PM   #125
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Originally Posted by stilesg57 View Post
That dip is weird. Starts around 3500, hits its nadir at about 4300, gone by about 4500. Itís higher in the rev range than Iíd hoped for; you're probably going to get dropped into it after every shift (and certainly every shift before redline).

They even circle it at about 6:45. It stood out to them too.

Body of knowledge continues: car makes low 190s whp give or take, axle back exhausts add a rounding errorís worth of HP.

Iím hoping a light application of FI can erase the dip and get me to ~270whp since thatís about what the 2014 Cayman S had that was the best matched engine/chassis Iíve ever personally driven. If this can make the same power at basically the same weight in the nicest chassis south of that Porsche, I think Iíll be happy.
I do not see a dip there, but a plateau. (Second part for other user) Feeling may be very different from a dip, so we cannot assume that a jornalist would be able to feel that in a short eun, without running specific testing.
Letís see how it feels when we can test drive (november?) and try to compare side by side vs gen1 (a colleague here kept his gen1 unmodified, which will be a good baseline)
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Old 09-17-2021, 05:34 PM   #126
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Curious where you got this dyno... that's an awful lot of gain up top without a tune, I don't know that I buy it.

EDIT: Second graph down is a little more realistic in terms of expectations for just a header without a tune.
https://www.ft86club.com/forums/showthread.php?p=938787
Got it from this guys post, #38. "Bottom line is stock, middle is header/intake no tune, top is with tune."

https://www.ft86club.com/forums/show...t=79303&page=3
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