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250exkid
11-10-2006, 08:05 PM
what is the horse power increase on a 2005 250ex with the old stlye Sparks X-4 ????? its a full system...... for example like +4 or +5 hp so any one no on the 2003 Sparks X-4??
250exkid
11-14-2006, 04:03 PM
come on people some ones gotta no.. i CANT get a hold of sparks to call anyway so help!:( :(
4TraxRider
11-14-2006, 04:30 PM
My best guess would be +1or maby 2.
I-7
11-14-2006, 04:50 PM
Originally posted by 4TraxRider
My best guess would be +1or maby 2.

Yeah. Probablay around 1 horsepower gain.:macho
honda250xrider
11-14-2006, 05:17 PM
maybe 1 hp on top, but you really need a dyno graph to compare the dif. in the rpm range when they say +5 or so they can say this because at 3000rpm you just gained +5 or so hp compared to the stock system
250exkid
11-14-2006, 07:36 PM
ooo ic ic what would you say comparing the X-4 to the hmf full system. witch do ya think would be best all around pipe???:confused:
bwamos
11-15-2006, 07:47 AM
HMF Full System vs. X-4 on the 250ex is going to be a very close comparison. You won't really feel the difference.
oldskoolex400
11-15-2006, 02:30 PM
pretty much any aftermarket pipe on a 250ex will add the same amount as long as its not a older DG or cobra exhaust. it doesnt really take a rocket scientist to make a better flowing exhaust compared to stock. seeing that you have already bought the sparks i couldnt see taking the loss on money in buying another pipe. i dont understand why people switch out different pipes every year that arent sponsored unless they just have money to burn :confused: i know that is the only way i would switch that much
250exkid
11-15-2006, 03:50 PM
yea im not putting it on till summer but i was just seeing if any one new but there bassically set up the same so i dont see why they should be the same. i hope the x-4 is better tho lol:macho
bwamos
11-15-2006, 07:14 PM
It could be better.. but the difference between 14hp, and 14.5 hp (as an example).. is not all that noticable.. lol. That's assuming the x-4 has 4% higher HP than the competition on that model.

None the less.. you're not gonna feel the difference on peak.

The curve everywhere else could very well be different though. And that's what really counts, not the peak hp.
250exkid
11-15-2006, 07:19 PM
ahhhh i c ic thanks