I have an 03 sv650 with a Holeshot slip on and a BMC air fliter. The pipe does give a noticeable increase in power, as well as eliminating the stock lawnmower sound. I have not put on a PC, as the EFI has not given me any real reason to. The bike runs about 8-10 degrees hotter, but nothing close to overheating. Every once and a while when I whack the throttle at 6 grand or so, the engine will sputter because of fuel error, but it's a rare occurance. yes, a PC would fix this problem, but the bike runs so well without it I'm debating wheather or not its worth the 300 some bucks to do it. Bottom line, most slip-ons will run fine with stock EFI mapping, but a PC would make it perfect. Oh, and if you really want to give your SV some balls, throw on a 520 chain conversion and buy a bigger rear sprocket. I'm running a 15 in the front and a 50 in the rear on a 520 chian, and the sucker takes off like a bat out of hell, on one wheel.
a stock 03 sv 650 pulls 70-73 hp i had an m4 slip on on mine and i removed the snorkel my bike ran fine it didn't run hot and the stock air filter actualy work better from what I've herd. You don't need a pc unless you get a full system. Then you realy should geta pc or it will be to lean and cause all kinds of bad things to happen. I changed my front sprocket to a 14 tooth and that allsohelped alot the top gear roll oon was pretty crazy i didn't need to downshift over 50 to pass cars but it wasn't reving to high on the highway.
My current bike should dyno at 111hp according to motorcyclist magazine I never had my 650 dynoed before it was totaled on June 1st when a car pulled infront of me. But most of the poeple on www.svrider.com are averaging 70-73hp stock and motorcyclist has it rated at 73.5hp a first gen sv is 65-68 I think I'm not sure. But differen't dyno's get different numbers but a stock sv650 has way more than 58hp. If you haven't removed the snorkel on your airbox yet try it if you can stand the noise its worth it even with the stock filter or you can get a sv1000 snorkel for it. its a good thing you did get a bmc air filter instead of a k&N a stock filter usualy works better. But with just a slip on you shouldn't have to remap it. The stock computer can be remaped by a shop with a yoshi (I think its called) box I'm not positive on the name of it though.
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