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I have HK 2.75 big straights with straight through baffles and thunder monster lollipop installed. Will a 2in 1 system give a large boost in HP and roughly how much if any. Would i have to rejet? I have a 2000 v star 1100 with 440 cams, 3000 dyna ignition and dyna coils wIth pod kit installed. Thanks in advance.
Most 2-1 exhaust systems won't do a thing. The Cobra Power Pro will....
Vadose, can you add a pix? I'd like to see them! Thx.
I have not purchased them yet. Just wanting to get some opinions if the 2-1 pipes will increase HP.
I much prefer the sound out of the HK 2.75 big straights and the look. They were my first after market exhaust. I replaced them with a 2 into 1 for more HP and have regretted it ever since. Only recently was I once again able to replace them with the HK 2.75 big straights and I am very happy.
Did you notice a significant power increase with the 2-1s? Did you put the Cobra 2-1's on?.
I did notice a slight increase in HP (seat of the pants dyno), but it sounded more like a hemi with the 2 into one pipes than the individual potato potato sound coming out of 2 separate pipes that I personally prefer along with the look.
Thanks evwy8ne for the responses! I am going to keep my existing exhaust. I can't justify the cost of new pipes yielding a minor HP gain. I also love the look of my Big Straights over a 2-1 system. I am going to change out the baffles to quite them down a bit thuogh. Anyone here using the Big City Thunder Quiet Baffles? I have their lollipop installed now and they sound good but a pretty loud.
To answer your question. About 5hp with the Cobra 2:1, it's the only 2:1 performance made for the 1100.