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Old 07-27-2020, 10:49 PM   #43
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Originally Posted by ScoobsMcGee View Post
Thoughts on the exterior bits intended to fix it?

https://www.supramkv.com/threads/any...ting-fix.5102/
They work for reasonable speeds. On track, the car will still buffet at speed.

For the record, 911's also buffet.
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Old 07-29-2020, 12:07 PM   #44
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Is there a way to disable the kickdown switch on the Supra when driving in manual mode?

I really hated that about the older BMWs (E90s). This was fixed in the F30 and G20 and the Z4 has the same logic as the G20. So I was really surprised to hear from tuners that the Supra would kick down in manual mode while trying to do their dynos.
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Old 09-15-2020, 03:02 PM   #45
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My BRZs logs show 60-80 at 1.5 but the engine is at 9lbs at 60 (5600rpms) and it doesn't hit the full 23lbs till 70mph(6600rpms).
80mph is only 7500rpms, 1500 shy of the 9000rpm redline.

logs show 60-100mph at 4.081s This is with one casual shift at 7800.
for reference, 60mph in 5th in the supra is about 3100rpm. 80 is ~4000.
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Old 09-15-2020, 04:01 PM   #46
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Bmw sacrificed spool for power.
I think there going for the electric motor feel.
I'm not sure I follow. Are you saying it spools too early and chokes up top?

If that's the case, I agree; they wanted to make a car with the widest powerband possible. The 2020 Supra's engine, real world, has full boost at 1400rpm without lugging the engine. My M3, lugging, would barely have full boost at 2400 rpm.

The supra's torque tapers very early....
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Old 09-15-2020, 05:19 PM   #47
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Yes, the head is also designed for early spool. I built a 22r 2.4 toyota that hit full boost at 1200rpms 20 years ago.
You should check out the 2021 variant with the 6 port head and dropped compression!
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Old 09-15-2020, 06:46 PM   #48
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That should help greatly. I see a head swap in your future.
Maybe a wrecked z4 donor.
I'd be more interested in a S58 head swap for the extra fueling overhead....
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Old 09-15-2020, 08:19 PM   #49
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Any tips for building a reliable Greddy Turbo BRZ? What do you need?

Thanks!
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Old 09-15-2020, 09:44 PM   #50
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Any tips for building a reliable Greddy Turbo BRZ? What do you need?

Thanks!
see my for sale thread. Copy that.
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Old 09-15-2020, 09:44 PM   #51
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Didn't know that was possible.
I have been out of the BMW scene since mine vanished during a divorce. Lol
Possible... is a bit of a stretch, as it would need a LOT of work.
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Old 09-15-2020, 11:59 PM   #52
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see my for sale thread. Copy that.
That's 15k spent, when only 5k is on the turbo. is the additional 10 really worth it even if you only want 250-300 whp?

Last edited by WRBRZ17; 09-16-2020 at 12:09 AM.
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Old 09-16-2020, 01:14 AM   #53
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That's 15k spent, when only 5k is on the turbo. is the additional 10 really worth it even if you only want 250-300 whp?
Do you want 250-300whp, or do you want reliable 250-300whp?

Most people go the route of the former, and then wonder why they have problem or talk about "the curse" when things go wrong.
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Old 09-16-2020, 12:35 PM   #54
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I was NA with full bolt-ons before I boosted.

I'd go supercharger *WITH* the NA mods.

Any specific Supercharger in particular? Thanks Mike
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Old 09-16-2020, 04:51 PM   #55
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Any specific Supercharger in particular? Thanks Mike
Any of the proven options. Edelbrock, Harrop, Jackson Racing, in alphabetical order.

PM me to order; I'll get you set up right.
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Old 09-20-2020, 04:51 PM   #56
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Any of the proven options. Edelbrock, Harrop, Jackson Racing, in alphabetical order.

Any reason why you recommend the above S/C in alphabetical order? Definitely different setups just curious why?
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