Invidia Catless Front Pipe Review Review |
After seeing a video of my car autocrossing, I was shocked that my car was actually still pretty quiet- surprising since the Greddy Revolution RS is known to be one of the loudest cat back exhausts available for the FRS/86/BRZ. During that autocross, I was also quite annoyed with the lack of low end power coming out of slower corners- where low rev second gear corner exits are common. To address both of these things, I decided to add a front pipe.
Since the O2 sensor is actually between the main catalytic converter in the header and the catalytic converter in the factory front pipe, the ECU doesn’t know if you delete the front pipe catalytic converter (no chance of check engine light), so for me, catless was the way to go. I wasn’t quite sure whether to go resonated or non-resonated since I’m really not a fan of rasp on a car- a little bit is ok, but otherwise I think it ruins the sound. After doing some reading on the forums, the general consensus was that a non-resonated front pipe would be super raspy. Being the logical person that I am, I totally ignored what I’d read, took the “I don’t believe you” mentality, and purchased an Invidia catless non-resonated front pipe.
Invidia Catless Non-Resonated Front Pipe Specs |
- Material | Polished Stainless steel
- Pipe Diameter | 60mm (2.36 inches)
- Weight | Approximately 3lbs (stock is 12.2lbs)
First Impressions |
Top notch quality on the welds and piping. It’s very pretty. Kind of a shame that it’s underneath the car and no one gets to see it. My only gripe is that the bolt holes in the gasket that was supplied for the front of the front pipe didn’t line up correctly, so I had to reuse the factory gasket.
The install of the Invidia front pipe was much more difficult than it should have been. This isn’t any fault of the actual front pipe- that part was a pice of cake. The difficulty is getting the two nuts that bolt the front of the factory front pipe to the over pipe off of the car. Mine were not rusted, but were incredibly tight, and given the location of the nuts to the catalytic converter on the stock front pipe, they were very tricky. There’s no enough space to get a socket on it, and since they were so tight, I wasn’t strong enough break them loose with a wrench. I was only able to get the bolts loose after jimmying a pipe onto the end of the wrench for extra leverage…. Otherwise the install is a piece of cake- just two bolts at each end of the front pipe, a mounting bolt, and removing a couple of the screws on the under tray.
The Sound |
I LOVE the sound of this front pipe combined with the Greddy Revolution RS catback. It was also nice to discover that the people on the forums were dead wrong with two things- 1 | Going with the non-resonated front pipe did NOT make the exhaust super raspy. There’s a slight bit of rasp right off of idle to about 2,000 RPM, but otherwise there’s next to none. 2 | Many forum members had also said that the front pipe doesn’t make a very big difference to overall volume- I cannot understate how wrong that is. The catless non-resonated Invidia front pipe most definitely made the car significantly louder. To some it would be obnoxious. For me it’s just right – it is loud, but it sounds nice enough that I’m still driving with my radio off two weeks after install just because I like listening to it.
This was certainly another reminder to take what people say on the forums with a grain of salt. There is some good information there, but there are also a lot of people giving their opinions that aren’t necessarily founded on reality (several people on the forum also said that a 3 inch catback on an N/A FR-S would sound like garbage, but I get compliments on the sound all the time). Sure, with some cat backs the exhaust may be raspy and only mildly louder when teamed with an non-resonated, catless front pipe, but you certainly can’t make a blanket statement.
There was a noticeable difference in throttle response and possibly a little bit more grunt than the stock front pipe. On an FR-S, you’re not going to get massive gains from swapping exhaust pieces other than the header, so don’t expect to pick up 30 horsepower from doing so.
It sounds like a lot of people have exhaust leaks after swapping the front pipe because they don’t reuse the donut gasket at the back of the stock front pipe. Use the factory donut gasket when you swap the front pipe and you won’t have any issues.