I've got a 2005 WRX that I am mid way through an engine swap on. I will be putting it together using a catless uppipe, turboback exhaust, potentially equal length headers, larger GrimSpeed TMI, K&N short ram, Mishomoto Radiator, ACT lightweight flywheel (14 lbs), and 255 lph Wahl fuel pump. I will also be getting the engine tuned when done. I bought the car with a blown motor from a dealer who could not provide me any information about why to motor went out, but I am discovering the answer as I take it apart. I noted the presence of a TDO (turbocharger) TD06H-20G ebay style aftermarket turbo, which I will be offloading and replacing. I'm trying to decide between getting a used stock turbo and then porting and polishing, or an aftermarket Blouch. I understand that if I get the Blouch, I will need to upgrade the injectors as well. The models I am looking at are:
Blouch TD05H-16GXT 7cm^2 Turbo Billet Wheel Subaru Models (inc. 2002-2007 WRX / 2004-2014 STI)
Blouch TD05H-16GXTR 8cm^2 Turbo Billet Wheel Subaru Models (inc. 2002-2007 WRX / 2004-2014 STI)
This car will be a weekend rally racer, but a weekday DD, so I'm looking for a little faster spool, a little more power, but to keep things reasonable without necessitating an entire engine rebuild. I have three questions regarding the turbo:
1. What size injectors are needed for this setup?
2. Do I need to upgrade the pistons, cams, or other engine internals to accommodate these slightly larger turbos?
3. Is it reasonable to tune this myself using a Cobb system, or do I need to take it in for a professional job using dynos, etc.? If I get it professionally tuned anyway, is there any reason for me to buy a Cobb Accessport?
Thanks and let me know if I am missing information that will help with the answer.
On a completely separate note... what the heck is this? Meth? Another component I found while taking the thing apart and I haven't found it in my service manual. The hose connects to the air intake.