Buy Now, Pay Later!
On orders over $200
100% Money Back on Select Parts
Product images
Product Media
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit (Part Number: )
COBB Tuning Fuel Pressure Regulator Kit
Subaru STI 2008+
Read 3 Reviews | 10 Q&As
Part # 315200
msrp: $300.00

In stock! Ships same day

Features & Product Details

Looking for a way to get rid of that annoying 2800 rpm stumble? COBB has the answer for you with the COBB Subaru STI Fuel Pressure Regulator Kit. It is a plug-and-play solution that is simple and very easy to install. It requires no cutting of OEM hoses. Make your drive a little less annoying for your car and yourself.

Tuning is required.


Brand: COBB Tuning
Adjustable: No
Mfgr. Warranty: 1 Year
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
RallySport Guarantee
WARNING: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.



3 Reviews
4.3 out of 5 Stars
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Customer Photos and Videos
No user media. You can upload a photo or video of your install by posting a review.
Does what it says it will. 1 month ago
Performs as expected from a company like Cobb. Did require a tune after.
Was this review helpful?
Works great and stumble is gone 2 years ago

The latest version from Cobb uses an upgraded fuel line connector so you future removals are easier. Initial install still requires special tool and the one sold here at Rallysport works just fine. Before upgrade, Stage 1 left "I" mode so limp it was almost useless and "S" had flat spots all over between 2k and 3.5k. Directions from Cobb lacked some details but having the on-line directions right near you helped get thru the fuzzy portions.
Was this review helpful?
1 of 1 people found the following review helpful
So easy to install with the right tools!  3 years ago
Don't try to install this without the Subaru specific oil/fuel line disconnect tool. I tried to first install this with a crap $5 tool from autozone and had no luck (I also heard some yahoos on the internet that got the lines off with zip ties.. Yeah.. No). I bought the Company23 tool from RSD and the lines popped off without a hitch. Also.. One last thing that slowed me down; I have the Cobb flex fuel kit on my 13 STi so I didn't use the normal lines that came in the kit, I had to reuse one line from the flex fuel kit. In the FPR kit, the line running from the damper to the motor (the fuel line that's mated to the damper when you receive the kit from Cobb) was actually removed and you news to utilize the flex fuel kit fuel line that runs to your stock FPR damper (This fuel line on one end has a 90° elbow and uses a blue retaining clip(that mates with your flex fuel sensor body), not clear/opaque color like in the FPR kit. The other end of the fuel line is just a regular cut tube end with a clamp). Don't be cheap, buy the right damn tool and save yourself many hours of frustration.
Was this review helpful?


  • Q: Quick disconnect connectors are different  Vaughn5 months ago

    Why are the quick disconnect connectors in the kit I received completely different than those in the picture? Everything installed and doesn't appear to be leaking. Is this just an update to their kit? Please help!
  • Q: Install directions?  Vaughn9 months ago

    Looking for the install instructions on this before buying. Want to make sure this is something I can install.
    • 0 of 0 people found the following answer helpful

      A:  Cobb will have most of there install instructions on their website, Please see below

      Luis L. @ RallySport Direct 6 months ago  
      Was this answer helpful?
  • Q: Tuning...  Vaughn9 months ago

    Just curious, what exactly needs to be changed on the map to allow the safe usage of this? I've already got a tuner on my agenda but I've been wondering what exactly is being changed on the tune.
  • Q: How do I know I need this kit?  DinoMagic11 months ago

    what are the symptoms that one would experience to help them confirm whether this kit is needed? I often feel a stumble after I've shifted into 2nd gear. It's most noticeable in second gear in lower RPMs and I haven't noticed it in other gears. I have a 2016 STI with 1000cc injectors and 255 walbro fuel pump.
    • 0 of 0 people found the following answer helpful

      A:  thats something only a tuner will tell you, he is the one that knows your car. He should told you if you needed one at the moment of the tune. If you are running 1000cc injectors im assuming you already have a map done in your car.

      e chavez
      Was this answer helpful?
  • Q: 2018 sti  Dahment907401 year ago

    will this work for a 2018 sti
    • 0 of 0 people found the following answer helpful

      A:  Cobb has not released an official statement saying that it will fit the 2018 STI so unfortunately we are not able to confirm fitment at this time.

      Tyler A. @ RallySport Direct 1 year ago  
      Was this answer helpful?