Hey guys,
I'm itching to do more advanced custom fabrication this spring/summer (all of it: twin scroll EL header, rotated up pipe, downpipe, intake, mating with my WAIC system). I just wanted to get some input to make sure that I have supporting mods and won't shoot myself in the foot with turbo selection.
Please don't give me the "why not just get a twin scroll setup" or "why not use a normal Subaru turbo". As I said, this is for a real fabrication challenge and to prove to myself that I can do it. Not to mention I'm not down with dropping 3k+ for a twin scroll rotated setup not even including the turbo when I can do it all for <$1.5k.
I'm eye-balling the Borg Warner S200SXE turbo because it has terrific reviews and a LOT of people using them successfully in other cars. Other people who have done this type of setup report having full boost at <3600rpm which is not much worse than the VF39 I have and with nearly 100whp more and a much better torque / hp graph all around. They're cheap too at <$700 for the ones I'm looking at.
Compressor Map:
Core Options:
Turbine Housings:
My setup:
-08 WRX
-Stage 2 IAG Shortblock
-Stock Heads (to be ported)
-Stock fuel (I realize this will need to be upgraded, but how far?)
-Water to Air Intercooler setup
-EBCS
-Turbo Back (3" to quad tip)
-TGV/EGR/Air Pump deletes
-EWG (obviously will have two)
-Stock Gears
-Stock Clutch
My setup is free flowing to/from the engine with a short intake path with no heat soak due to WAIC.
I'm looking to keep building my daily driver and although I don't mind spooling a little bit later, I'd prefer to stay in the <3800k area. I drive hard, but smoothly and don't do stupid shit like launch regularly/downshift abruptly or drop the clutch on gear changes. I do my best to rev match and take care of my car but do hit the red line from time to time and accelerate rapidly.
1). What things is my setup lacking to safely run 350-375 whp (with a low boost, safe tune and eventually work from there)?
2). Am I going to run into issues with the Turbine wheel size. I realize it's a bigger turbo but even the TD05-20G type turbos have one that's 10mm smaller in diameter (albeit this is a twin scroll setup which spools better).
3). How do I go about picking the core? (one has a larger compressor than the other, but how to weigh against what it will do in my car?)
4). How would one pick the Turbine Housing? I have an understanding of what A/R means and how it affects flow, but have no idea how to connect those concepts to my Subie to pick the best option?
5). How much wood could a woodchuck chuck If a woodchuck could chuck wood?
Thanks in advance!
I'm itching to do more advanced custom fabrication this spring/summer (all of it: twin scroll EL header, rotated up pipe, downpipe, intake, mating with my WAIC system). I just wanted to get some input to make sure that I have supporting mods and won't shoot myself in the foot with turbo selection.
Please don't give me the "why not just get a twin scroll setup" or "why not use a normal Subaru turbo". As I said, this is for a real fabrication challenge and to prove to myself that I can do it. Not to mention I'm not down with dropping 3k+ for a twin scroll rotated setup not even including the turbo when I can do it all for <$1.5k.
I'm eye-balling the Borg Warner S200SXE turbo because it has terrific reviews and a LOT of people using them successfully in other cars. Other people who have done this type of setup report having full boost at <3600rpm which is not much worse than the VF39 I have and with nearly 100whp more and a much better torque / hp graph all around. They're cheap too at <$700 for the ones I'm looking at.
Compressor Map:
Core Options:
Turbine Housings:
My setup:
-08 WRX
-Stage 2 IAG Shortblock
-Stock Heads (to be ported)
-Stock fuel (I realize this will need to be upgraded, but how far?)
-Water to Air Intercooler setup
-EBCS
-Turbo Back (3" to quad tip)
-TGV/EGR/Air Pump deletes
-EWG (obviously will have two)
-Stock Gears
-Stock Clutch
My setup is free flowing to/from the engine with a short intake path with no heat soak due to WAIC.
I'm looking to keep building my daily driver and although I don't mind spooling a little bit later, I'd prefer to stay in the <3800k area. I drive hard, but smoothly and don't do stupid shit like launch regularly/downshift abruptly or drop the clutch on gear changes. I do my best to rev match and take care of my car but do hit the red line from time to time and accelerate rapidly.
1). What things is my setup lacking to safely run 350-375 whp (with a low boost, safe tune and eventually work from there)?
2). Am I going to run into issues with the Turbine wheel size. I realize it's a bigger turbo but even the TD05-20G type turbos have one that's 10mm smaller in diameter (albeit this is a twin scroll setup which spools better).
3). How do I go about picking the core? (one has a larger compressor than the other, but how to weigh against what it will do in my car?)
4). How would one pick the Turbine Housing? I have an understanding of what A/R means and how it affects flow, but have no idea how to connect those concepts to my Subie to pick the best option?
5). How much wood could a woodchuck chuck If a woodchuck could chuck wood?
Thanks in advance!