[Inside the BBOD]

On 18/01/2014 at 4:16 AM, Rosssub said:

"VOD gone in 24hrs" 😎

Perfection, "ABSOLUTE PERFECTION". 0.8mm Restrictor Pill into Hose #1 at the BBOD (IACV Vac Control Hose)

- Primary Boost Loss throughout the entire VOD is less than 2psi. 😎

- Primary Boost Loss to Full TT Boost is less than one second. 😎

- Completely smooth and powerful transition into Full TT, just more "then more" power.

- Stable Boost throughout entire RPM range. 😎

- No Boost Spikes. 😎

- No CEL\'s at all, through entire testing. 😎

I "HIGHLY RECOMMEND" everyone that owns a TT Subaru with a BBOD. Fit a 0.8mm Restrictor Pill into Hose #1.

If you have fitted an \'EBC\' or \'MBC\', then your Primary Waste Gate \'OEM\' Hose contains a 0.8mm Restrictor Pill.

- Push the "OEM Pill" out, with a piece of wire.

- Pull hose # 1 from the top/front port of the BBOD.

- insert the Pill into hose 1, use wire to push it up the hose at least 50mm (2 inches).

- Refit hose 1 onto BBOD.

- GO and enjoy your TT Subaru, the way that Subaru should have built it.

If you do not have a 0.8mm Restrictor Pill, the OEM Subaru Part Number is:

0.8mm Pill - 22326AA260

1.0mm Pill - 22326AA010

Subaru Pill Part Number Source:

http://www.perth-wrx.com/vb/mechanicals/48287-restrictor-pill-what-why-you-need.html

Amazing. ;D

 

Sorry I can't let this thread just die but this simply gotta be the quickest and most rewarding mod you can do the twin turbo setup. 

 

Thank you Rosssub! 

 

I did this on my 2001 Rev D 

Auto/Tiptronic and it's made the biggest difference. I've already been running a manual boost controller and luckily I hadn't thrown out the old T piece with the hose which has that restrictor pill in it. Took  me less than 5 minutes to do the hose 1 mod. (Not counting me reading this thread over twice and a bit).