These GrimmSpeed top mount intercooler splitters are available for the 02-07 WRX/STi models and will fit with the OEM WRX or STi TMIC or the GrimmSpeed TMIC. These vary slightly depending on the hood scoop, so be sure to select the correct kit!
| Vehicle Fitment: | Part Number: |
| 2002-2003 with WRX Hood Scoop | 093073 |
| 2002-2003 with STi Hood Scoop | 093074 |
| 2004-2005 with WRX Hood Scoop | 093075 |
| 2004-2005 with STi Hood Scoop | 093076 |
| 2006-2007 fits all WRX & STi | 093077 |
Features:
• 70% Increase in flow capacity to your TMIC
• Massively improves your TMIC’s ability to remove heat
• Maximizes TMIC Efficiency
• Lowers TMIC outlet temps, enables more aggressive tuning
• Designed for even flow distribution
• Forces entire core work to cool the hot charge air
• CAD design and simulation
• Ensures both fitment and function
• CNC Laser Cut 5052 Aluminum
• Resists fatigue due to heat and vibration
• Durable DuPont Black Powdercoat
• Protects splitter with an OEM finish
• Custom EPDM Rubber Gasket
• Provides excellent seal and longevity
• 3x Intercooler Sprayer Ports
• Utilize your STI TMIC sprayer or add one if you’d like
More from GrimmSpeed:
“Tired of popping your hood only to have that ugly OEM Splitter remind you of how badly it deprives your fancy TMIC of the cool, ambient air that it requires? Perhaps you’ve upgraded to an STI scoop and want to really make use of that extra air? Maybe you’ve already got an STI splitter but want to squeeze every ounce of performance out of your top mount. After frustrations with this and more, the GrimmSpeed team has the real solution. Well, five real solutions. Introducing, the GrimmSpeed TMIC Splitter lineup.
Our cars, with even mild modification, create some serious heat. As the turbo compresses your intake air, it heats up and it’s not unusual to see air temperatures of over 400°F entering your intercooler. For that reason, you’ve probably upgraded to a larger, more capable top mount. That intercooler uses ambient air flowing over your hood and through your scoop to cool the hot compressed air and if you’re still using the OEM WRX size splitter, you’re not getting the most out of your TMIC. The GrimmSpeed line of splitters increases the size of the opening by 70% to your larger TMIC. Larger TMICs can increase your internal core volume by as much as 200% and you’re going to need every bit of that additional ambient air to keep things cool.
Materials:
You’ll also find that the GrimmSpeed splitters are very lightweight. We’ve tested some of ‘the other guys’ splitters and have found that they’ve chosen stainless steel instead of aluminum. The reason for this is likely as a band-aid, to ensure stiffness so that the splitter holds its shape. Instead of selecting a stiffer material, we’ve stiffened the design, which has allowed us to use 20 gauge 5052 aluminum and drop the weight of these splitters by 300% over the competition. Instead of welding the assemblies, we’ve opted to use flathead rivets. These offer the same mechanical joint but without stressing the material and because of that, you don’t have to worry about breaking welds or your splitter cracking. With each splitter, we’ll be including a length of a custom designed extrusion gasket, made from the same EPDM rubber as the OEM gasket, but better suited to fit our splitter. Pre-punched for split-shank rivets, you can be sure that you’ll get a great seal with no worries of failing adhesive or brittle rubber.
Install Notes:
The installation guide is currently being updated to reflect some small design changes. You’ll notice that some kits will ship with a bulb style gasket. For these kits, start applying the gasket in the center of one of the four flanges and work your way around. The gasket will flex enough to follow around the bends. As you approach the end, you’ll notice that you have a few extra inches of gasket depending on how tightly you’ve stretched it. Trim it to length at this time. If you’d like, you can make relief cuts in the bulb on the corners.”
• PDF Install Guide
