Invidia Q300 Exhaust | 23+ Integra Type S DE5

I'm so happy I found this exhaust. It has the bangs and pops you want in sport + mode and is quiet in comfort mode. Highly recommend to anyone looking for a new exhaust. Big Thanks to Humaz, Junayd and everyone in Unity Performance.

I also wanted to live with the Invidia Q300 on my 2024 DE5 prior to review. I've had it installed for several months now and while I am impressed with the quality of the parts, I must say I am very unhappy with the booming sound in the cabin at all settings (comfort, sport, or sport+) and at lower rpms (2,000 to 3,000 rpm), part throttle and under load.. Unfortunately this rpm range corresponds to highway speeds. If I am in 6th gear at 65-70 mph, and under part throttle with some load, the booming sound is very unpleasant. It sounds like a truck with a bad muffler to be honest. I've found myself selecting 5th gear to raise the rpms a bit which does alleviate the issue.

The worst situation for me is the booming sound at comfort setting since I wanted this exhaust to be quiet when desired.

I've written to Invidia asking for a suggestion for an alternate (quieter) resonator but have not yet heard back.

On a subjective note, I find that I prefer the contrast of the stock polished exhaust tips with the black diffuser. The Invidia burnt tips look great up close, but from behind the car they disappear into the blackness. I do like the exhaust sound when under heavier acceleration and higher rpms but this only happens occasionally. Normal driving for me tends to be in the 2,000-3,000 rpm range.

So overall a mixed bad with the Q300 on the DE5 for me.

Great price for a full cat back system. The quality of the system is eggcellent and easy to install for diy'ers. The sound is an improvement over stock and it is not overwhelmingly loud for neighbors. It also keeps the valve function for the different driving modes.
Does it have drone? Egh... not that bad...I don't notice it or care if it does. The sound...price and looks make this system a good buy. I have no ragrets buying this system, not even a letter.

I've had the q300 on my DE5 for a little over a month now and wanted to wait until after break in to leave my thoughts.

The exhaust quality, material and welds are incredible regardless of any price point.
The craftsmanship and fact that it comes flanged AND valved at such a low price boggles my mind and easily beats out exhausts 2x the cost.

The exhaust immediately after install honestly had me second guessing my choice. It was loud paired with my RV6 DP, to say the least, however I decided to see how that evolved after break in, and can say that its absolutely perfect now

My only qualms are cold start and on WOT it can still get loud at peak, I have 2 kids in the car regularly so my sensibilities will likely vary from others YMMV.

I will also note there is absolutely 0 drone in any mode however there is a distinct bass-y tone when accelerating between 2-3k rpm on WOT, which is apparently a characteristic of the K20C1s air/exhaust flow.

I was considering getting an exhaust for my DE5 but wasn’t sure which option to go with between miltek and borla. I was chatting with Humza and he told me about the invidia q300 exhaust for our cars.. I was sole when I saw the looks, the fact that it has a valve and the pricing.

I received the package recently and there were one or two bolts that went missing since the packaging box was damaged during transit. Humza was super cool about it and helped me source the correct hardware. Had the exhaust installed and it sounds great! Thanks again Humza for all your support