Project Gen 3STi: Testing the COBB intake with some anti-bling.

Cobb SF intake Subaru STi MotoIQ dyno test

Project Gen 3STi: Testing the COBB intake with some anti-bling. 

By Wes Dumalski

Welcome to WCOB radio… all COBB Tuning All the time… OK so yeah… the last few installments of Project GR have sounded like the making of a COBB Tuning radio station! Well, quite frankly every time we get the car to a certain point power wise we talk to our friends at COBB, they tell us we should “try the SF Intake, it's a trick bit of kit and you will love it…” OK so our arms got twisted and we wind up with Cobb's SF Intake and Airbox along with a slew of COBB goodies to look the part. In this installment we will be testing the SF intake and airbox along with showcasing the e-tune possibilities with the COBB AccessPORT.  

If you have read our previous installments you know that Mitch McKee of AMS had been doing our tuning. Well we will still be going to AMS for our dyno pulls but this time around we will use a different company to tune. For this we are going straight to COBB tuning to get the expert help of…. Mitch McKee… Yup same guy, different company as Mitch recently headed to sunny Southern California to join the ranks at COBB tuning and for this test we have been using the good old interwebz to datalog and tweak a custom MAP for our GR project.  But before we get too far in to our e-exploits lets first install the intake.  

Cobb SF Intake Subaru STi Whats in the box
Like everything we have received from COBB, the Intake and Airbox they shipped were as complete as it gets.

The COBB SF intake is a C.A.R.B. certified short ram intake system that allows you to add on an optional Cold Air Box. We chose to use not only the intake but also the cold air box. The intake itself features a COBB designed steel reinforced 4 ply silicone inlet tube that replaces the OEM piece. This inlet tube attaches to the COBB MAF housing that gets covered by a reusable COBB air filter. The MAF housing is a composite molded piece that features a velocity stack on the inlet as well as the proper provisions for mounting the OEM MAF sensor. 

Cobb SF Intake MAF housing Subaru STi C.A.R.B. certified
Cobb SF intake Subaru STi MAF housing airflow straighteners
The Composite MAF housing features these airflow straighteners to mirror the OEM housing and to provide the MAF sensor with the ideal environment to operate properly. The composite construction also helps to reduce heatsoak that is normally experienced with a metal pipe. Also of note is the velocity stack on the inlet. 

My favorite part of the intake is the Laser cut bracket that supports the new intake. It features the COBB logo and excellent build quality and it is a shame that it gets completely covered by the Airbox. The 16 gauge aluminum airbox is also a nice bit of kit featuring laser cut edges and black anodizing.

Cobb SF Intake MAF bracket filter MotoIQ test
This piece of porn is the intake support bracket. It fits as good as it looks. If you read that to be less than perfect then your vision and or judgment are cloudy! 



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