AVO turbo kit for BRZ - initial build thread

[fenton]

Originally Posted by JoeBoxer

I know a lot of OEM turbo applications are able to reach peak torque under 2k rpm is this something that would be possible on an aftermarket kit?

example: Audi A4
Horsepower: 211 @ 4300
Torque: 258 @ 1500 2.0L/121
I know its a different engine style but if we could get peak torque lower I think it would work well.

Full spool on most of the low PSI kits on here are hitting at about 2500rpm.

Only difference between these turbo's and the VW ones is we aren't running out of steam in the top end.

Do you know how bad it feels to be in a gti/a4/speed3 that falls flat on its face at 4000 rpm?!

When you hit peak power at 4000rpm it is all downhill from there, some cars are worse than others.

For a commuter car like a a4 sure this is more acceptable but for a perfomance/sports car this is certainly not a desired trait.

Sure if you used a tiny turbo you could get peak power at 2000 rpm but you would tail off power on the top end quite a bit once the turbo becomes a restriction.

[Ironsquid]

Originally Posted by subatoy

hey AVO how much do you guys charge for installation?

Come down to Orlando, it'll cost you exactly 1 12pack of blue moon :happy0180:

[fenton]

See attached dyno's for a look at what a small turbo means for the top end.

[JoeBoxer]

Thanks guys i've had some turbo cars but they were oem, VW GLI and Sonata Turbo. I guess i would be looking for something like AVO posted on the 2.5 Impreza.

[subatoy]

Originally Posted by Opposed

But, the MK6 utalizes a turbo, which you said you hate because they don't kick in until 5k...Not trying to continue to go off topic, but just saying.

GTI's turbo full boost kicks in at 1,800 rpm and it holds.
I love it.

[subatoy]

Originally Posted by Ironsquid

Come down to Orlando, it'll cost you exactly 1 12pack of blue moon :happy0180:

For that deal I would get you 2x12 packs!

[fenton]

Originally Posted by subatoy

GTI's turbo full boost kicks in at 1,800 rpm and it holds.
I love it.

Although the GTI is much better than a Speed 3 it certainly doesn't hold it indefinetly.

Peak power is at about 5000 rpm when torque and power start falling off to the 6500rpm redline.

[Sportsguy83]

The small turbo discussion is going on good, GTI's vs Speed3, etc... I wonder if we could get back on topic now
@AVOturboworld, any update on turbo selection?

[Apex Chase]

Originally Posted by sportsguy83

I wonder if we could get back on topic now
@AVOturboworld, any update on turbo selection?

[DriftEightSix]

Originally Posted by AVOturboworld

Technically, it's possible, but it means a really small turbocharger that will peak out quickly (note the 211hp is made at 4300rpm in example above).

Our turbocharger kits for the 2.5i Impreza's looked basically like this:



The dyno doesn't show the onset of boost, but road tuning shows the magic starting to happen at 1500rpm. Peak is reached relatively early at 2800rpm, and it plateau'd till 6400rpm, where the 2.5i's start getting in reach of their redline.

Now - this is not the 2.0-liter BRZ motor! It's just an example. The 12:1 compression, different combustion chamber design, and higher rev limit/available power band means different results and different setups. With the turbocharger up front and right off the exhaust manifold, though, it will probably respond quicker and may get to peak torque sooner.

If you can make the 86 do the same results as that graph i will hand my money over right now!

[ngabdala]

@AVOturboworld , keep up the good work guys. Very impressed. Is the throttle response dulled on your turbo?

[KAR]

Me personally would rather have lag and great top end than vise versa
Boost is only a downshift away

[fred_boosted]

I missed most parts of the thread.

I read it quickly.

Can anyone tell me:

What turbo AVO are going to use?

Any upgrade choice in the future for the turbo?

Most importantly, do they keep the stock cat?

Thank you.

[subatoy]

Originally Posted by fred_boosted

I missed most parts of the thread.

I read it quickly.

Can anyone tell me:

What turbo AVO are going to use?

Any upgrade choice in the future for the turbo?

Most importantly, do they keep the stock cat?

Thank you.

I think the turbo is top secret still.