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From Sparks Big Core To Stock-jetting ?

800 Views 9 Replies 5 Participants Last post by  snogibson
Hey all, when I bought my 08 yfz it had a curtis sparks big core exhaust/pipe and the sparks air filter supercharger kit, and tps bypass plug, sparks jet kit! It rips as it is, problem is, I'm going riding at the oregon dunes next weekend and they have a 93db limit which my sparks pipe will definately not pass. I'm planning on just putting my stock pipe on and still running everything else, this is going to suck since my power will drop dramatically, but anybody have any idea what I will want to change my jets to? It is approx sea level. I do have the stock needle/jets also, I think what #'s are stock? Please help!
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i would get a quiet core. i dont know how much it would drop it but it might help??
155-160 stock needle and 45 pilot is what I'd run since you have their intake on it.

QC won't help that pipe pass db limits.
The oregon dunes is my playground. The first thing you will notice is that there wont be a single bike there that will pass. None of my bikes will pass and I have never been messed with. So I say just run it as it is.
im going to the dunes this weekend trough next week and im running the same setup and i will let u know if i get rolled by the cops i know mine wouldnt pass a sound check if i was lucky and it Florence and coos bay
That would be an awesome help if you're going this weekend to let me know if they say anything! Maybe I'll leave my setup on and just bring my stock pipe and jets/needle with me! I'd hate to change it out on the sand though!
QUOTE (Snogibson @ Mar 19 2009, 08:12 AM) index.php?act=findpost&pid=759617
im going to the dunes this weekend trough next week and im running the same setup and i will let u know if i get rolled by the cops i know mine wouldnt pass a sound check if i was lucky and it Florence and coos bay[/b]
Hey, if the cops do ding ya, at least I will know how much the ticket is, lol! Do they give a ticket and let you keep riding, or give you a ticket and make you stop (or keep ticketing you). If its not too much maybe I'd just take it in the tailpipe and keep ridin'
QUOTE (king450 @ Mar 19 2009, 07:46 PM) index.php?act=findpost&pid=759893
Hey, if the cops do ding ya, at least I will know how much the ticket is, lol! Do they give a ticket and let you keep riding, or give you a ticket and make you stop (or keep ticketing you). If its not too much maybe I'd just take it in the tailpipe and keep ridin'[/b]

So i went and rode both places no issues i went right past the cops at Florence like 3 times but i just put it in 3rd and went slow to keep the sound down

o and they will make u stop ridden or u can change it out to a quieter exhaust its not just a slap on the wrist, but first thing u say is im new to ridding and just got this bike i didn't know what it sound checked at i will get it fixed lol
QUOTE (Snogibson @ Mar 26 2009, 08:52 AM) index.php?act=findpost&pid=762499
So i went and rode both places no issues i went right past the cops at Florence like 3 times but i just put it in 3rd and went slow to keep the sound down

o and they will make u stop ridden or u can change it out to a quieter exhaust its not just a slap on the wrist, but first thing u say is im new to ridding and just got this bike i didn't know what it sound checked at i will get it fixed lol[/b]
cool, thanks for the info! I'm packing my stock pipe and some jets along with me just in case! I appreciate the investigative work :icon_biggrin:
QUOTE (king450 @ Apr 2 2009, 09:02 PM) index.php?act=findpost&pid=765576
cool, thanks for the info! I'm packing my stock pipe and some jets along with me just in case! I appreciate the investigative work :icon_biggrin:[/b]

ya no problem
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