Description
Performance
Flow Bench Results vs. OEM at 28″ WC
OEM Catless – 244.6 CFM
OEM Catted – 164.7 CFM
GrimmSpeed – 292.6 CFM
Spool Up
Application specific but generally you will see 300-400rpm quicker spool up
Quick Specs
- Gaskets Included – Heavy Duty GrimmSpeed Gaskets
- Flex Joint – 321 Stainless Steel “Tuned-Bellow”
- Tubing Thickness- 14 Gauge Piping Thickness – 33% thicker than most competitors
- Pipe to Flange Connection – Hand-welded on both outside/inside of the flange for an extremely strong connection
- Flanges – 1/2″ 304 Stainless Steel
- Optional Ceramic Coating
- Reduce Turbo Lag
Fitments
The GrimmSpeed Up Pipe is designed to fit USDM Subaru EJ-Series Turbo Engines. The official fitments for these units are:
- 04-19 Impreza STI
- 06-14 Impreza WRX
- 06-08 Forester XT
- 07-08 Baja XT
- 07-09 Legacy GT
- 07-09 Outback XT
Note: While the up pipe will physically fit other years of these models, replacing a factory up pipe with an aftermarket up pipe is defeating a catalytic emissions device and is considered illegal in some states:
- 02-05 Impreza WRX
- 04-05 Forester XT
- 04-06 Baja XT
- 05-06 Legacy GT
- 05-06 Outback XT
