Why does Subaru use UEL headers?
EL and UEL Headers and Performance Unequal Length Headers are typically lighter since shorter runners on two cylinders require less material. Two shorter runners also means less engine RPM required to get exhaust gas to the turbo, so you’ll see quicker turbo response with a car running UEL Subaru Headers.
Do you need a tune for headers Subaru?
no, you don’t have to. You’ll see gains from just bolting them on the OTS map and you won’t hurt anything.
Does the EJ25 have unequal length headers?
Unequal Length Header The factory header for most US market turbo EJ20 / EJ25 Subarus including the WRX, STI, FXT (Forester XT), LGT (Legacy GT), Baja Turbo, and Outback XT are unequal length.
Is UEL header bad?
He is kind of right but it is not as bad as he makes it out. The unequal lengths makes 2 cylinders flow differently then the other 2 cylinders. Ideally you want all 4 flowing the same amount and rate, equal length headers will balance the flow.
Do you need to tune after headers?
And for aftermarket headers, the answer is yes, you should tune your car when installing a new exhaust header. Major performance mods like a header can significantly alter important variables like air/fuel ratio. Tune is required to ensure you get the most out of the header without future problems.
Do you need a tune for UEL headers?
You will be fine to run them without a tune. You may run into a CEL after a few hundred miles but it may be fixible with an 02 defouler. Having said that, I would no doubt go for the tune first over the header.
Can a stock Subaru header be replaced with an aftermarket one?
Replacing your stock header with an aftermarket one will increase HP and decrease turbo spool-up time. This Invidia header does not ship with an uppipe. You will need to purchase one separately. It will work with any uppipe that will fit a stock manifold.
What’s the difference between factory and Performance Subaru headers?
The factory OEM manifold is designed as a cost-effective component whereas this Killer B Motorsport Performance Header is designed with the goal of maximizing exhaust gas performance and increasing power. The equal length twin-scroll design improves exhaust gas scavenging, increasing the engine’s ability to make power.
What kind of header does a Subaru Turbo EJ use?
Dump tube is included. This Invidia header is a direct replacement for your Subaru turbo EJ series motor’s OEM header. Replacing your stock header with an aftermarket one will increase HP and decrease turbo spool-up time. This Invidia header does not ship with an uppipe.
What are the latest exhaust headers and manifolds?
OH NO! View the latest Headers and Manifolds including Tomei, Greddy and HKS! If you are trying to hit a certain horsepower target, then you must get rid of that boat anchor of an OEM exhaust manifold.
The factory OEM manifold is designed as a cost-effective component whereas this Killer B Motorsport Performance Header is designed with the goal of maximizing exhaust gas performance and increasing power. The equal length twin-scroll design improves exhaust gas scavenging, increasing the engine’s ability to make power.
Replacing your stock header with an aftermarket one will increase HP and decrease turbo spool-up time. This Invidia header does not ship with an uppipe. You will need to purchase one separately. It will work with any uppipe that will fit a stock manifold.
How are exhaust headers used in performance cars?
An exhaust header has individual tubes for each exhaust port, allowing each exhaust pulse to flow unobstructed from the cylinder head. However, some factory exhaust manifolds also have individual tubes. The most sophisticated of these and the most well thought out of this type are found on performance cars.
What kind of exhaust pipe does a Subaru use?
Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla sound, respected by motoring enthusiasts everywhere. Fits 2002-2012 Subaru Models using Tomioka Racing, GTSPEC, or Tomei equal or unequal length headers using a 2-bolt up-pipe flange.