Where the two Invidia N1 styles differ is their midpipe. The 'Street' midpipe features a flex joint for easy installation as well as an inline resonator giving this system an aggressive yet deep and subtle touring style tone, suited better for daily driven street cars. The ravenous Invidia N1 'Race' exhaust features the same 76mm (3 inch) mandrel bent stainless steel piping but does not have a resonator or flex section. The result is a much louder, race car exhaust tone that will scream at wide open throttle. All Invidia N1 exhaust systems for the 08-10 STI include necessary hardware and gaskets for installation. N1 Exhaust systems vary depending on body style, please choose accordingly below.
Note: Are you using a stock j pipe or downpipe? If yes, the GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter p/n 077046, is required.
Put this on my 2009 WRX and it’s perfect, gives me the subi rumble and is audible when you’re int the car but it’s not too loud at all and sounds awesome. Minimal drone on the highway and since it has a little resonator on it, if you want to shoot flames, all you have to do is get a race pipe and cat delete;)
I’ve wanted that perfect subie rumble since I’ve had my WRX, and this totally delivers. Install took around 45 minutes. This exhaust is beautiful and looks perfect on the car. It’s not overly loud and sounds amazing! I’d recommend to anybody looking for that deep purr!
Finally have that true Subaru rumble! It sounds amazing especially for the price! Highly recommend buying this exhaust A+++++++!