This is an unequal length header which will make that Boxer rumble come alive instantly. Borla has designed this header with a couple flex sections to reduce stress that can cause cracks in a header like this over time. Their EJ header does very well with this design. This system is also coated with Borlas in house ceramic coating, which is what produces the dull finish in the photos.
This system will fit the factory overpipe or any aftermarket overpipe as well. It works in almost any combo you can think of for naturally aspirated applications. This header is intended for off road use only as it removes the vehicles main catalytic converters.
The install consisted of the following items. A Perrin Over-Pipe and the Borla UEL Header for the Scion FRS and Subaru BRZ. The install is pretty simple and straight forward. We didn’t have time to document but can always help out via e-mail if you get stuck. 🙂
First off lets talk about weight savings.
Stock Header – 20.90 lbs
Borla UEL Header – 10.20 lbs
Stock Over Pipe – 4.50 lbs
Perrin Over Pipe – 3.50 lbs
Overall we dropped another 11.7 lbs from our car.
Some cool photos for comparison of the new parts vs stock parts.
Installed in the car. 🙂
Catted Front Pipe video.
Borla UEL Headers
Perrin Over Pipe
Invidia Catted Front Pipe
FT-86 SpeedFactory V1
We somewhat got a break in the weather which only included a bunch of rain, so we braved the water and got the silver car across town for some dyno time.
Now I want to add this in here. This is our independent test. Borla did not give us this header, we had to buy it. Below are the details in which we did the dyno, the parts on the car, and other information.
Mods on the car that affect the results:
Engine & Exhaust:
FT-86 SpeedFactory V1 Exhaust
Borla UEL header
Invidia catted frontpipe
aFe Takeda Intake
Wheels & Tires:
Enkei RPF1 17×9+35 Matte Black
Hankook RS-3 in 255/40/17
Drop Engineering Lug Nuts
(This combo adds more surface area and 1.5lbs per corner over stock)
FA20Club Stage 2
(more on this below)
The pulls we did are done in 4th gear. Sampling started right around 3000rpm.
The car does have a stage 2 tune from FA20Club. The below image is what the car did with a stage 2 tune out of the box by adding the Borla UEL. This is no revisions yet, and a tune we had on the car from back in December.
After doing some pulls, sending the data in to FA20Club and getting a tune back this is what we got compared to a stock car.
The stock dyno we did back in August was a poor sample so we overlay’d it to one that was the K&N drop in filter dyno.
As you can see the torque dip is significantly reduced and almost flat now. FA20Club mentioned that had we been able to get 93 octane fuel in the car we would have seen more gains, but 91 is all we get here in Des Moines, so it had to do. I’m excited and happy with the new torque curve, especially with autocross and track season almost here for us in Iowa.