2011 Sportage SX
Has anyone done a performance exhaust upgrade on their SX? Or has any info on which system would be the best fit.....thanx
New here, couldn't find your link to Exhaust Therory. Kindly provideNot that I've seen.
There's a youtube video of the 7ism ("sevenism") exhaust system. I'm told it's a good design, but I see 360 degrees of pipe bends.
There's a JunBL system, a little cheaper than 7ism, with a single muffler.
There's a "racetech" muffler-back system, basically for shiny exhaust tips.
I've posted a link a few times here on exhaust theory, showing that scavenging is very difficult on NA engines, since they rely on backpressure for maximum power. OEM exhausts should balance backpressure. HartUMP mentions the SX, and backpressure works against the turbocharger where far more power is gained. Turbo exhausts should have as little backpressure as possible.
The forum search isn't excellent. I just use google, site:kia-forums.com twinscroll "exhaust theory"New here, couldn't find your link to Exhaust Therory. Kindly provide
Basically, tuning exhaust for NA engines requires a lot of math to balance tradeoffs and not lose power, the kind of math OEM engineers do. Even tuning the header for a turbocharged engine is hard. However, tuning exhaust after a turbocharger is easy, where short runs of the largest pipe is better. Scavenging cylinders isn't even possible after the turbo. I mentioned that information because inevitably someone will have owned a NA 1990's Honda Civic, and will mention having lost power with 3in exhaust.On a turbo, the information I have says larger aftermarket exhaust will improve performance to the point of diminishing returns.
as a side thought, i wonder if this exhaust would help SX owners avoid the bumping issue with a lot of the aftermarket hitches?I like the one Twinscroll suggested from Junbl.
detail KSPEC KDM Performance Center
Dual twin tips is cool looking and it would be easy for just about anyone to install (bolt together / no welding). Plus, doesn't bend (pipes) all crazy like some systems do. This is straight back to the can and out the tips...
I'd assume the crazy bent "performance" systems are more for looks and sound production than actual performance improvements. I can't imagine it being more efficient than stock with crazy bends in the pipes. Just a layman guess...
I keep wondering the same thing about these. My hitch is so close to the exhaust that even with my added exhaust hangers really tightening things up I can still get a clunk in the right circumstances.as a side thought, i wonder if this exhaust would help SX owners avoid the bumping issue with a lot of the aftermarket hitches?