AVO turbo kit for BRZ - initial build thread

[Sportsguy83]

Originally Posted by OmarGC

It obviously uses their exhaust manifold to bolt the turbo to... just a thought. From the turbo back is what you guys are looking to hear about

Sent from my PC36100 using Tapatalk 2

Yeah guilty as charged. When I said header back I meant the completed header/turbo assembly. but you are correct, the proper way to call it is turbo back.

[AVOturboworld]

Originally Posted by Sportsguy83

Yeah, after watching the video again, I might be wrong. It might also be that the car is gutted for track so the little sound deadening the OEM car has is gone.

No, it still has the interior, power windows, etc. It's a header back exhaust with high-flow metal cat (secondary), 2.5" after that. However, being an RA model, there seems to be less sound deadening from the factory than a standard model. I know mine is nowhere near that loud.

The 1.06 time was decent, but it was literally from doing a single lap. We were running both cars, the STI widebody and the BRZ, and simply didn't have the time and resources to do both fully, so concentrated on the STI. More time on the circuit + doing a full strip of the interior and we'd have dropped the times down.

[Sportsguy83]

Originally Posted by AVOturboworld

No, it still has the interior, power windows, etc. It's a header back exhaust with high-flow metal cat (secondary), 2.5" after that. However, being an RA model, there seems to be less sound deadening from the factory than a standard model. I know mine is nowhere near that loud.

The 1.06 time was decent, but it was literally from doing a single lap. We were running both cars, the STI widebody and the BRZ, and simply didn't have the time and resources to do both fully, so concentrated on the STI. More time on the circuit + doing a full strip of the interior and we'd have dropped the times down.

Ahhhh... should have stick to my initial guess

[AVOturboworld]

Minor update: Reflashed the car with the latest ROM from Ecutek, and it did indeed fix the CEL/Idle issue. Totally unrelated to that, we've worked on improving the low end response and overall smoothness of the curve, and it's come out even better than before. Not talking about power gains, but partial throttle response and other daily driving matters. Honestly, feels fantastic.

If I get the time, we'll get the car back on the dyno next week and get some more graphs. I'm also going to start working on the "beyond stage 1" for the AVO America FR-S, and will be updating you guys as that goes as well.

[MSTiFK8R]

woohoo!

I'm desperately in for the updates&finalization of Stage_2 and expected kit shipping dates

I know you have a looong queue upto the horizon

[Tansey86]

I'm excited to see the high flow airbox you guys are making. Maybe it will be incorporated into the stage 2 kit.

[Sportsguy83]

Originally Posted by Tansey86

I'm excited to see the high flow airbox you guys are making. Maybe it will be incorporated into the stage 2 kit.

Any pics or details about this?

[Tansey86]

Originally Posted by Sportsguy83

Any pics or details about this?

Not yet, thats what im waiting for! All I know is that they are making a high flow intake kit that bolt up and replaces the OEM airbox. Should help with turbo sound, cooling and power.

[AVOturboworld]

I have a pic somewhere of the bare prototype, but not of a finished piece yet. I'll see if I can dig that picture up.

[mnsayer]

Updates please

When are we going to see some proper on the road videos?

[AVOturboworld]

Sorry we haven't been giving much updates, it's been a busy week for us, but that's because we are getting ready for the Tokyo Auto Salon from tomorrow (Friday, Japan time). We've got our car and the white DAMD Turbo A/T to prep, along with everything else going on.



But since I'm posting... I'd like to address the heat issue at the track. We have, yes, tested the car extensively at the track, and have done up to 8 laps without overheating issues. But I'll be honest, that's not a 4 hour enduro, or even a 24 hour enduro. We are still testing for longer term effects on the heating.

Yet I think a lot of information is missing on overheating, since people still seem to think it's a turbo that is causing the overheating issues. In most cases, and especially in the case of the setup we have, heated oil from the turbo adds very little to the overall heat in the oil of the engine. One of the primary causes of heat comes from putting an FMIC in front of the radiator. It's simple logic, it cuts down on the amount of air flowing through the radiator, especially at speed.

That's one of the reasons determining the size and type of FMIC is so important, and where you making trade-offs in terms of core size vs. pressure drop vs. flow to the radiator itself. On the other hand, there's no way that you'd want to not run an FMIC - it's necessary to cool down the hot air created by the FI process. That is something else I'm seeing some confusion on, at least it seems so. Compressing air heats it up, it doesn't matter how it's compressed.

Or to quote wiki, since they typed it up better:

"Turbochargers and superchargers are engineered to force more air mass into an engine's intake manifold and combustion chamber. Intercooling is a method used to compensate for heating caused by supercharging, a natural byproduct of the semi-adiabatic compression process. Increased air pressure can result in an excessively hot intake charge, significantly reducing the performance gains of supercharging due to decreased density. Increased intake charge temperature can also increase the cylinder combustion temperature, causing detonation, excessive wear, or heat damage to an engine block. Passing a compressed and heated intake charge through an intercooler reduces its temperature (due to heat rejection) and pressure (due to flow restriction of fins). If the device is properly engineered, the relative decrease in temperature is greater than the relative loss in pressure, resulting a net increase in density. This increases system performance by recovering some losses of the inefficient compression process by rejecting heat to the atmosphere."

Finally - I've done a lot, and I mean a *lot*, of circuit racing when I was younger (and still in Japan), and even held a A racing license for those odd times I was asked to participate in actual races. I spent a lot of seat time in a lot of standard cars at the track, and one thing you learn soon is that many street cars start overheating after a few laps. This is the nature of the beast, a manufacturer isn't concentrating on building a race car, they are building street cars. Track-ready is a relatively rare term for something off the dealer lot.

[ashmostro]

Thanks for this post, Paul. Agreed on all points.

Are there plans for incorporating a post turbo oil cooler? What about a high capacity radiator with secondary heat exchanger that could be used for either oil cooling or AT cooling, when applicable?

[AVOturboworld]

Technically, we do have a form of a post-turbo oil cooler. At least, in regards to the oil that flows through the turbo itself. The oil is pulled (not pushed) through the turbo into an oil reservoir tank, and then runs through quit a bit of tubing before it gets back into the engine. It's completely possible that the oil is the same heat it was at before it went into the turbo by that time.

We've also discussed secondary oil cooling, and may implement that in the near future. One of many projects to tackle.

[Tansey86]

Are we limited to only AVO made turbos for this kit? If not can share what lineup we could use if we had to replace one?