Have a look at the Prototype Supra's engine

[93Siro]

If the low cr have passed is only for co2 and fuel reduction. More cr = more efficiency = less tunability^^
10:1 it’s not 11:1 cr max near 13 after detonation.
If you have 9:1 you can’t increased turbo bost +0,2 bar ~+20% of power without any detonations.

I have a Z4 35i. The engine is N54. 10.2 CR with 8 psi (stock level). For the last 8,000 kms i had upgraded hybrid turbos installed currently at 22 psi with 600whp and my logs are super nice with no knocks and basically zero correction factor. I kept the boost low to keep the clutches happy otherwise i have another 8 psi left in them before i reach the engine limit. Fueling is 91 plus meth.

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[mrarm]

I have a Z4 35i. The engine is N54. 10.2 CR with 8 psi (stock level). For the last 8,000 kms i had upgraded hybrid turbos installed currently at 22 psi with 600whp and my logs are super nice with no knocks and basically zero correction factor. I kept the boost low to keep the clutches happy otherwise i have another 8 psi left in them before i reach the engine limit. Fueling is 91 plus meth.

At 22 psi with meth... I indicated these values without meth

 

[93Siro]

At 22 psi with meth... I indicated these values without meth

Haha fair enough but you have to know its because of fueling problems. N54 on pump can’t make more than mid 400 whp because the injectors are at their peak. You either have to upgrade the DI system which like i did and only a handful of people, or do what others do and install supplemental port injection. If you install port injection you can get 600whp or so with just pump gas, like currently where i am.

This is the future for guys who plan to get the Supra:

Tune => Tune and bolt ons => Upgraded turbo => Port Injection or lots of meth => Full fueling system for E85 => Blown transmissions

 

[mrarm]

Haha fair enough but you have to know its because of fueling problems. N54 on pump can’t make more than mid 400 whp because the injectors are at their peak. You either have to upgrade the DI system which like i did and only a handful of people, or do what others do and install supplemental port injection. If you install port injection you can get 600whp or so with just pump gas, like currently where i am.

This is the future for guys who plan to get the Supra:

Tune => Tune and bolt ons => Upgraded turbo => Port Injection or lots of meth => Full fueling system for E85 => Blown transmissions

me ecu Tune with E85=> high-flow air filter=> Downpipes for begin

 

[MA617M]

Me:

4" turbo-back Ti exhaust, intake, tune.

Then E85, tune....

That's the plan anyway.

 

[mrarm]

Me:

4" turbo-back Ti exhaust, intake, tune.

Then E85, tune....

That's the plan anyway.

4’’ it’s very huge
In this video very nice doing for the stock Supra

 

[mrarm]

4’’ it’s very huge
In this video very nice doing for the stock Supra

Oups In this video very nice song for the stock Supra

 

[MA617M]

it sounds very good. A JZA80 turbo sounds very boring stock standard.

the power difference between a 4" and 3" turbo back is remarkable at higher RPM, even on a standard internal engine. problem is keeping it quiet:

 

[tha7osavage]

it sounds very good. A JZA80 turbo sounds very boring stock standard.

the power difference between a 4" and 3" turbo back is remarkable at higher RPM, even on a standard internal engine. problem is keeping it quiet:

I’ve always wondered if there’s an aftermarket for cars that come equipped with an active exhaust? I think it’s been confirmed that the Supra will have it (pictures of flaps in the exhaust for Supra/Z4). Now whether these can be manually controlled is yet to be seen, but I wonder if there are aftermarket exhausts that are designed to utilize that functionality since a lot of newer cars have it nowadays.

Seems redundant in a way, I know lol. If I’m changing the exhaust, it’s for performance and sound. But it would be nice to have a little control over that. CHP in California is brutal.

 

[dshandy]

There are definitely aftermarket exhaust options that will use the factory exhaust valve. The stock exhaust valve actuators can be reused and depending on the driving mode the car is in/under high-load conditions the flaps will fully open up just like the stock exhaust. Now we just have to wait for the aftermarket to get their hands on MKV...

 

[Viselord]

Sorry if I sound ignorant, but do we know if the engine will come with the Toyota direct and port injection? Time will tell I guess?

 

[CantEven_Supra]

Sorry if I sound ignorant, but do we know if the engine will come with the Toyota direct and port injection? Time will tell I guess?

If it does you can say hello to easy e85 conversion much like the new Audi 5 Cylinders

 

[tha7osavage]

There are definitely aftermarket exhaust options that will use the factory exhaust valve. The stock exhaust valve actuators can be reused and depending on the driving mode the car is in/under high-load conditions the flaps will fully open up just like the stock exhaust. Now we just have to wait for the aftermarket to get their hands on MKV...

Thanks. Good to know!

 

[Jdmuscle]

Here is a proper sounding 2JZ.. happens to be mine.. lol



Titan 280s making the symphony..

 

[SupraGuy88]

Here is a proper sounding 2JZ.. happens to be mine.. lol



Titan 280s making the symphony..

What Turbo manifold / exhaust setup are you running? it kind of sounds like a SP F1 racing manifold....ugh Dat sound!!!!

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