[RageWorx]

Originally Posted by oldman

Better find an uncorrected dyno before you make that statement.

Educated estimates on my part no need but I agree with what your saying.

-Jon

[oldman]

Originally Posted by RageWorx

Thanks I've been following this car

-Jon

As an aside are all B58 two pot heads?

[oldman]

Originally Posted by RageWorx

Educated estimates on my part no need but I agree with what your saying.

-Jon

Yea I already stand corrected the car is heavier than I thought and it looks like you will need 380 ish FI HP to do 112 MPH, about 390 NA HP.

What I need is the old "car test" program that you could put all the data in and spit out a fairly accurate 1/4 mile time and speed, and speed in gear.

[oldman]

Originally Posted by RageWorx

I think your are thinking of the new S58 M engine (New M3/M4 , X3M)with the 480 / 500 Hp numbers. Different animal but there are rumors the MKV Supra could see the S58 M Engine would be badass and $$$$ probably. Final Edition A95 Mabey LOL ?


Some of the 2020 MKV guys have gotten past the 500 rwhp mark already (520 ish dynojet) on Stock turbo (usually with Tune, Downpipe/Exhaust, Meth or some E85) on stock fuel system.

I would expect with the B58D variant MKV Supra 550-575 rwhp or more will be possible on stock turbo which is perfect because that where the stock 5000psi DI fuel system starts to run out of volume/flow. As far as I know though the B58C and B58D will have the same fuel system so those capabilities haven't changed.

The weakness with the MKV right now is actually tuning the ZF 8HP 8 spd Auto trans (ZF 8HP50).

While it is a great trans it is not the same ZF 8HP90 thats in the Hellcats and etc .. so how much can the 8HP50 take vs the 8HP90 will be the big question since the MKV Supra has already been producing power numbers and some trans slipping has occured with no options to tune the TCU.

Once they can do that we will see car could get faster.

-Jon

So if this is a 2 pot head and the trans is slipping with chip tune (which IMO don't control the torque correctly) the guy that said you gotta rip out the entire drivetrain is essentially correct at some power level sub 600 wheel. Still kind of high but yeah, at some point it will get #$$$$$$$$.

[RageWorx]

Originally Posted by oldman

As an aside are all B58 two pot heads?

No Just the B58C ... Both the B58B and B58D (or B58M friggin BMW lol) use a 6 port head ... I think the B58C was an attempt at OPF Filter compliance also as far as I know there are no RDE-compliant Z4 B58D cars yet (US Z4 only).

The B58D or M will replace the B58C in all markets that aren't subject to WLTP (OPF filters) Damn EU lol.

-Jon

[oldman]

carbon, the most innate substance on the planet Earth, we can't have that.

[RageWorx]

Originally Posted by oldman

So if this is a 2 pot head and the trans is slipping with chip tune (which IMO don't control the torque correctly) the guy that said you gotta rip out the entire drivetrain is essentially correct at some power level sub 600 wheel. Still kind of high but yeah, at some point it will get #$$$$$$$$.

Not necessarily true all depends on power goals. If you want 1000+ rwhp/1000+ rwtq then yeah lets talk MKV Supras getting TH400 swaps already !

Right now there seems to be more of a hard torque limit the MKV Supra guys are hitting with the ZF 8HP50 with the stock trans tune and that is around 600 ft/lbs of torque they are slipping and even going into fault mode because of it. But actually not too bad if you think about it its a light weight transmission.

But as far as power is concerned guys have been in the 600-700+ rwhp range already with the Big Turbo upgrades/Hybrid Turbo setups so a ~3350 lbs short wheel base car with over 600 rwhp sounds pretty fun to me LOL

But no its not the Hellcats ZF 8HP90 that can handle .... almost whatever you want but then the Supra would weigh 4000 lbs too haha.

We will soon find out when they can tune the 8HP50 like the 8HP90s (xHP Software)... will it hold a bit more torque or will you start to see them Blow UP !!!

However a MKV Supra with only a tune should not be having trans issues if so that is a engine tune related issue and they need a better tuner.

-Jon

[LESS1]

Originally Posted by oldman

Yea I already stand corrected the car is heavier than I thought and it looks like you will need 380 ish FI HP to do 112 MPH, about 390 NA HP.

What I need is the old "car test" program that you could put all the data in and spit out a fairly accurate 1/4 mile time and speed, and speed in gear.

I have a copy of "car test"... also have a copy of virtual dyno, send me the data and I'll plug it in for you, or I'll send you the URL for both programs. I have found the accuracy of both of these is within 3% - 5% of actual. This statement is backed up by my personal experience and across multiple vehicles. Really comes down to the info you feed these... GIGO!!!

[oldman]

https://www.caranddriver.com/reviews...y-the-numbers/

Supra data including road test

[shaffe]

Originally Posted by BlaqWhole

So after all that has been said and done I think we can conclude that the GT500, when compared to the ZL1, has been a flop. GM won this Gen battle in a decisive manner. For each trim Camaro, there needed to be a higher trim Mustang to compete. And it culminated in the CF GT500 vs the ZLE. The GT500 needed to not only win but win convincingly to have been a success. And it couldn't pull it off. GM pulled off quite the feat all them years ago and I don't think anyone can deny that. And it's only gonna get worse as higher trim C8s start showing up. GM is on top and I don't see them losing the crown for a long time!!

Yep, I think it is safe so say GM had pretty much a clean sweep in the performance battle of this gen.

I still want to see a base 500 against a base ZL1 though

[BlaqWhole]

Originally Posted by shaffe

Yep, I think it is safe so say GM had pretty much a clean sweep in the performance battle of this gen.

I still want to see a base 500 against a base ZL1 though

That would be the most practical considering that those cars will be what most people will see or come across in the wild.

[BlaqWhole]

C8s using LC. And they were hotlapping. Man I love how those things just grab n go!!

[oldman]

sounds great and they just hook, visually it appears this is a dry aka not-prep "launch" pad, so it is more like what you get on the street.

[BlaqWhole]

Here is another video detailing several aspects of the C8s. Sorry guys but I'm on my C8 vibe today!!