BH GT-B Legacy Twin Turbo to Single Turbo conversion

This conversion is now fully documented:
Main BH TT to ST Conversion doc
http://cid-cfa30f34a9604d4a.skydrive.live.com/redir.aspx?resid=CFA30F34A9604D...

First startup after converting my 2001 BH5 Legacy GT-B to a single turbo (VF22) with all STI v5/6 parts incl ECU, exhaust and inlet manifold etc. Running boost of 15 PSI (for now).
EDIT: now running a Possum Link Insert ECU

All STI v5/6 parts swap over with a few wiring mods for ignition, boost solonoid, fuel pump relay and fuel pump controller.
V5/6 STI ECUs do plug stright in (not on revison D BH's) BUT.... watch for Compression ratios(CR), the BH Twin Turb engines are 9:1 CR and the v5/6 STI ECU is either 8:1 or 8.5:1, either way the ECU to engine CR mismatch will cause major detonation as the timing will be too far advanced.
This is where you need a tunable ECU like a possumlink OR sort the CR out on the engine you are using.

All details and much more are at www.clubsub.org.nz

Category:

Autos & Vehicles

Tags:

• Subaru
• legacy
• GT-B
• EJ20
• VF22
• STI
• Twin
• Turbo
• single
• turbo
• conversion
• first
• startup
• BH
• WRX
• BH5

[jezzmoto]

Would you do this for my BH?...if so at what type of cost?

[gazzy2000]

@jezzmoto errr, arent you in Tokyo? LOL

[jezzmoto]

@gazzy2000 Back in NZ now

[gazzy2000]

@jezzmoto hey, not keen myself but sign up with clubsub.org.nz and find someone in your area. You may want to ask if the conversion can be done on a Blitzen.

[gazzy2000]

This conversion is now fully documented, see links in description

[Scottimousprime]

Great conversion!

I have a 99 RSK and am seriously considering doing this. Now, you said that you used v5/v6 parts, including loom. Did you have to re-wire the whole car to get the ecu working. Also, is the engine you are running a v5/v6 sti engine or a converted twin turbo block? Cheers

[gazzy2000]

@Scottimousprime hey, i updated the description with more details for you. cheers

[TimTamsLOL]

now put this in a deli :D

[jagtbedarfhinrich]

great !!

[jezzmoto]

I've just got a Blitzen wagon, I'm gonna take it to NZ performance tuning to have the exaust done and an ECU remap. Really like what you've done, sounds...wicked : )

[jezzmoto]

Sick!