New Turbo Kit Sneak Peek(Ptuning)

[andrew20195]

Originally Posted by ptuning

I think you may be thinking about EVO X ROM tuning. That car uses both methods for load blend calculations straight from the factory. Other cars use the MAP sensor for things like boost control and boost cut (factory turbo Subarus), for EVAP purging, and for limp mode conditions when the MAF sensor dies.

Hmm, I'll have to experiment with that. At Subaru Technical Training the instructor had us doing experiments showing that the ECM ignores MAF and uses MAP to calculate fuel delivery during quick transitions, but that was on an Outback with the FB25. The BRZ may very well be different.

If you are against speed density tuning just because ECUTek is the only company currently offering it...

As I am not ready to jump on the mod train just yet, I have not completely ruled out any tuning solution. I know a well set up speed density tune can be quite good.

And it looks like my other question about MAF scaling was answered in the other thread.

[ptuning]

Originally Posted by andrew20195

Hmm, I'll have to experiment with that. At Subaru Technical Training the instructor had us doing experiments showing that the ECM ignores MAF and uses MAP to calculate fuel delivery during quick transitions, but that was on an Outback with the FB25. The BRZ may very well be different.

As I am not ready to jump on the mod train just yet, I have not completely ruled out any tuning solution. I know a well set up speed density tune can be quite good.

And it looks like my other question about MAF scaling was answered in the other thread.

But yeah, there is nothing wrong with retaining full MAF operation for NA and mildly boosted cars. We use speed density blending mainly to address issues with MAF overrun.

- Toan

[King Tut]

Originally Posted by andrew20195

I'm not sure I understand this. What do you mean "speed density capability?" From what I understand the factory ECM uses MAF for steady state operation, and switches to speed density for load transitions as is common with many modern vehicles. Are you saying the OFT does not have the ability to modify the VE tables, or are you saying you run 100% Speed Density tunes? If the latter is the case, why have a MAF housing at all?

Originally Posted by andrew20195

Hmm, I'll have to experiment with that. At Subaru Technical Training the instructor had us doing experiments showing that the ECM ignores MAF and uses MAP to calculate fuel delivery during quick transitions, but that was on an Outback with the FB25. The BRZ may very well be different.

The OEM ECU definitely utilizes the MAP sensor. It wouldn't be there if it wasn't being utilized. The OFT has the ability to modify any of the OEM tables. What it doesn't have is the ability to create custom tables that based off of sensor inputs such as the MAP sensor make changes to the OEM tables allowing the car to run off a pure speed density map when certain conditions are met unlike what the OEM ECU does. I don't think anyone is running a 100% speed density tune at this point. Most are now going to a hybrid that transitions to speed density when the MAF voltage gets near maxing out.

[mikepaul21]

Any more pictures of the optional oil cooler, I saw a picture of where the lines went but couldn't really see the oil cooler too much.

[ptuning]

Originally Posted by mikepaul21

Any more pictures of the optional oil cooler, I saw a picture of where the lines went but couldn't really see the oil cooler too much.

We will post more pics of our oil/water oil cooler system once we have the production pieces completed.

[csworldfan]

Does this kit fit on an aftermarket header?

[mkivsoopra]

Originally Posted by csworldfan

Does this kit fit on an aftermarket header?

Yes. I'm using the JDL UEL header with mine.

[AllDayJonRay]

As long as the aftermarket header keeps the connection to the overpipe in the factory location, yes.

[csworldfan]

What about front sway bars? Does this work with aftermarket sway bars?

[kanundrum]

Originally Posted by csworldfan

What about front sway bars? Does this work with aftermarket sway bars?

No you would need to use their front sway bar which comes with every kit

[csworldfan]

Thanks for the information guys, it's much appreciated. Time to start saving some dough :P.

One more question; Would a bigger intercooler benefit this kit? Seems a little small for gtx3076r.

[AllDayJonRay]

They selected that size intercooler because [I believe] its the largest size that the stock bumper/crash beam cannot accommodate, without cutting things.

And you likely won't have any issues with heat-soak with this intercooler and this turbo running ~10psi. The GTX3076R is gonna be blowing relatively cool at this output level. It will probably take long sessions of track abuse in high heat to heat-soak this intercooler on this setup.

[csworldfan]

Originally Posted by AllDayJonRay

They selected that size intercooler because [I believe] its the largest size that the stock bumper/crash beam cannot accommodate, without cutting things.

And you likely won't have any issues with heat-soak with this intercooler and this turbo running ~10psi. The GTX3076R is gonna be blowing relatively cool at this output level. It will probably take long sessions of track abuse in high heat to heat-soak this intercooler on this setup.

I'm moving to the sacramento valley, so heatsoak is something I'm definitely worried about. I also will be tracking the car, so that just compounds the issue. Current plan is ~16 psi on e85. I wonder if they would sell me the kit without the intercooler.

[AllDayJonRay]

Yea, you're ticking off all the factors that would increase your chances of heatsoak.

But understand that the bumper inlet doesn't really allow for airflow for a larger core, without modification, and in order to fit a larger core you're going to have to modify your crash beam and/or bumper.