Unnecessary. I'd skip. Also, unless a part is listed by Cobb as supported, it's not supported.K &N Cold air Inatake 69-8001TWR
I don't buy that brand. Also, I'd skip headers (again, read the Cobb map notes) and just do an up pipe. Any up pipe -- except from that brand.Agency Power Stainless Steel HeadersHeader w/ Up pipe
Sure.TXS downpipe catted
Contact both TXS and Invidia and ask each of their piece mates to the other.Invidia N1 Catback Exhaust Single Layer Titanium
No. Skip.BOV Tial Q
None. Skip. The Cobb map will control boost. Read the Cobb map.Boost controller not sure what kind to get
No. Skip.Walbro 255 LPH High Pressure Fuel Pump Kit Or bosch 044 motorsport pump not sure which one
No. Skip.DeatschWerks Fuel Injectors 565cc/min
Expensive. There are parts you simply don't need. Read the Cobb map notes. Follow those notes only.How is the list ?
What I think isn't useful. The Cobb map notes are all that matter. Read them.Give opinions what do u think?
The pump and injectors are not needed now. They would be needed in the case of a turbo upgrade. I'd avoid a turbo upgrade because of the high costs. Search for "Stage 1" or "Stage 2" and see which one you find more interesting, as neither needs a turbo upgrade. Once you have the car there, see if you like it or still want more.I also want to do more to the engine but im not sure what else i can do to get more HP every little helps
I doubt it will be a problem but yes, you can upgrade it. See the transmission forum. Also follow the link in my sig.about the tranny like i said its auto and i think that will be a problem if i leave it the way it is, so is there away i can upgrade it and have faster longer shifts?
Before modifying the car in any way, bring it up to full factory spec according to the owner's manual. Prefer authentic Subaru parts. After all maintenance is done as specified, if there is money left, then consider mods.And anything i should know about the WRX things i should check do on the reg anything will help im tryning to learn all i can
Follow the link in my signature for any/all info. However, if you are going to buy a Cobb device, you must read their map notes and must use the parts specified in those map notes.