Do you need a tune for equal length headers STI?

Do you need a tune for equal length headers STI?

Registered. yes, you will need a tune.

Do STIS have equal length headers?

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. This includes the current 2.5L STI, but does not include the FA20 powered WRX / FXT.

Are unequal length headers bad for your engine?

UEL and EL Headers and Engine Wear With an unequal length header, gas from the two longer runners will remain in the header as it will take longer to reach the collector. This results in lower cylinder temperature on an equal length header, which can help prevent ringland failure.

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 I need a tune for STi intercooler?

You don’t NEED a custom tune for the STi TMIC. Your car will be able to adjust for the air density just do an ECU reset.

Does an upgraded intercooler give more power?

It also makes the compressed air denser as it enters the intake manifold, which causes a richer air-to-fuel mix in the engine’s cylinders. The result is increased power output. So, the answer to the question is yes! An intercooler does help to increase horsepower.

How does an equal length Subaru header work?

UEL and EL Headers and Engine Wear. An equal length Subaru WRX/STi header will expell gases at an equal rate per pulse, with gas from each cylinder leaving the header at the same time. With an unequal length header, gas from the two longer runners will remain in the header as it will take longer to reach the collector.

Which is better an equal length or unequal length header?

With an unequal length header, gas from the two longer runners will remain in the header as it will take longer to reach the collector. This results in lower cylinder temperature on an equal length header, which can help prevent ringland failure.

Which is louder a UEL header or an equal length header?

The shorter runner on a UEL header will create a louder noise than a longer runner as it has less piping to travel through. This results in the iconic Subuaru Rumble. This rumble doesnt exist on cars running an Equal Length header