If you’re anything like me, you know that the stock splitter on your WRX can be a real pain when it comes to getting the most out of your top mount intercooler (TMIC). Every time I popped the hood, that OEM splitter was a constant reminder of how it was choking off the airflow my upgraded TMIC desperately needed. It’s frustrating, especially if you’ve already made the jump to an STI scoop and want to actually utilize that extra airflow. After dealing with this for a while, I stumbled upon the GrimmSpeed TMIC Splitter lineup, and let me tell you, it’s a game changer.
Our cars generate a lot of heat, especially when you start tweaking things. The turbo compresses the intake air, and it’s not unheard of to see temps soaring over 400°F before they even hit the intercooler. If you’ve upgraded to a larger TMIC, you’re probably aware that it can increase internal core volume by up to 200%. But here’s the kicker: if you’re still running with the stock splitter, you’re not getting the airflow you need to keep everything cool. That’s where the GrimmSpeed splitters come in—they boost the opening size by a whopping 70%. More airflow means better cooling, and that’s crucial for performance.
Fitments:
Notes:
So if you're ready to ditch that restrictive OEM splitter and really unleash the potential of your TMIC, the GrimmSpeed splitter is a solid upgrade. Trust me, your car will thank you.
Other Part Numbers:
GrimmSpeed #GRM093076
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2004-2005 Subaru STI |
STI | 2004-2005 |

Grimmspeed is an automotive aftermarket company that was founded in 2006 by Justin Grimm. They specialize in creating parts for the exhaust system for various automotive vehicles. Grimm has always had this passion for cars and had always wanted to improve his vehicle’s performance. After numerous trials, he was able to perfect his craft and later on decided to turn it into his career. Today, they have become one of the leading brands when it comes to producing high-performance exhaust systems.
Expanding their Product OfferingThe company initially manufactured parts for Subaru. But as the company expanded, they started offering parts for other brands such as Ford, Mitsubishi, Hyundai, and Mazda. They now offer parts such as intercoolers, intake, exhaust, engine pulleys, gaskets, boost controllers, phenolic spacers and so much more.
Continuous Product DevelopmentGrimmspeed never stops in finding ways to produce innovative products and is always on the push to keep their products up to date. With the rapid change in automotive technology, it is a must that their product is able to adapt to this change for it to satisfy the demand of its users. This is the reason why the company has gained the trust of many tuners all around.
Purchase Grimmspeed Product at Vivid RacingBuilt by an enthusiast for fellow enthusiasts.
If you want a product that is designed to improve the performance of your vehicle, then Grimmspeed is the brand for you. To know more about Grimmspeed, visit Vivid Racing and check out their list of products that would fit your specific needs.