Deatsch Werks fuel injectors:

Engineered to fit your OEM harness, fuel rail and manifold and are built using only quality OEM cores. Each set of DeatschWerks injectors is balanced within 2% variation, making them easy to tune. This means better fitment, easier tuning, and increased reliability. And Deatsch Werks injectors are backed by a comprehensive 12-month warranty.

Deatschwerks performs flow balancing and quality assurance testing on every set of injectors they produce, ensuring that the end product is top-notch. Deatsch Werks injectors are tested and analyzed at over 40 data points on DW's in-house New Age Technologies injector flow bench. While DeatshWerks injectors are manufactured from used OEM cores, you can rest assure that you are recieving a top-quality, reliable, well-performing product at a price that is hard to pass up.

02-07 WRX / 2007 STi Top-Feed Injectors:
DeatshWerks Subaru top-feed injectors are available in flow rates from 565 to 1100cc and utilize an OEM 12-orifice atomization plate (except for 565s and 650s which use a 4-hole version). They are available in standard, or "Cobb Spec" sets of 4.

Cobb Spec Injectors: These 565cc, 650cc, and 750cc DeatschWerks injectors are designed for use with off-the-shelf Cobb Accessport Maps. Slight coil and flow parameters have been set to optimize this injector specifically to Cobb's Accessport maps. These are really only a necessity if you are using a Cobb map for the Accessport and are not having your WRX/STi Pro-Tuned.