Can slip ons be this bad??
So being the cheap college student I am, I thought Id try the Danmoto carbon GP pipe on my 300, and since the first street I rode with it, it has been an absolute disappointment.
First off, it's deafening. I know there's a baffle, but I've already decided after spending an entire day riding that Im selling it, so if anyone wants it cheap PM. It caused literal ringing in my ears on the freeway, at no speed can I hear any music at all.
Second, it sounds literally like just a straight pipe, but literally only slightly quieter. Super brappy, super deep. Down in low RPMs, it doesn't sound bad, but it sounds like a Subaru on steroids. Up high it sounds like insane flapping, clopping type popping, and across the whole range, its just that deafeningly loud noise that almost conceals all other sounds. I know some like it loud, and I do like some volume as well, but I was not expecting the tone to be so harsh, especially up high.
Third, it totally wrecked engine performance. It only makes slightly raised torque levels at 3-4k, which I was able to actually accelerate harder in higher gears in this range, but everything else after that was total garbage. The higher I revved it up, the more it sounded like it was gonna explode, and the more the power and torque tapered off. It was so bad, I swear, that it made almost the exact same torque at like 5 and 10k, super awful. The stock pipe has nothng down under 5k, which is fine. It totally wakes up around 7, and smoothly increases performance with more rpm after that, like it should.
Literally everything about the actual performance and experience of actually using this pipe was bad. I didn't expect a lot from a cheapo pipe that costs 130 bucks, but all the reviews I had seen were either satisfactory or above. What the heck? It was downright a waste of money in my opinion...
I am an individual who likes fine tuning things, I like to find the performance changes from all the little adjustments you can make, so maybe I am just picky? I wanted to like the pipe, but everything was bad. There was no compromises, trade-offs, only losses.
I am surprised that just a slip on can ruin performance so much. I have run the bike with no pipe before just to experience it, and now that I think about it, it performs almost exactly the same with the slip on installed. Zero torque across the board, awful sounds, and a ton of backfires, and popping.
Could I possibly have done something wrong? I've got no other engine mods. Stock air filter as well, and its in great shape, recently replaced. I was under the impression that slip ons generally don't need a power commander or fuel controller, and that there would be almost negligible performance changes with a slip on anyway. Boy was I wrong, at least with this one in particular. Pretty sure it wasn't leaking either.
Am I missing something? Is this just how a cheap open pipe slip on performs? Whats bad about this compared to say a good, name brand pipe of the same open style?
And lastly, are there any quality exhaust upgrades for not 3-500 dollars? I saw another post with a similar mindset to mine, that I like the stock pipe sounds, but not the volume.
Any good experiences with slip ons, cheap or expensive? Power gains, even tiny ones? Honestly I just want stock pipe performance with better sound, slightly louder.
Any comments welcome,