Ok I've been lurking for a while and from what I have read Ivan seems to have the best jetkit available. Well I have already gone a different route with the Yoshimura MJN jet kit. I am switching to a serpent exhaust in the next month (hopefully, it's backordered till March) Should I get a new jet kit? Will I be able to put the new kit in even though I had the MJN in. If this is the case will the Ivan's work with the Serpent system?
I know these sound dumb but when it comes to jetting and carbs I know nothing at all. Now I also saw I need to remove the EXUP valve. How is this accomplished, and what other changes do I need to make. Where can I get the parts to fool the servo into thinking it is still there? I apologize for all the questions, but you seem to offer great advise from everything else I have read

If this Serpent exhaust isn't from another planet the Ivan's jet-kit will work perfectly fine with that exhaust.


Welcome to the board btw! :hellobye

I'll leave the question about removing the EXUP valve for someone else to answer.

But, why do you need to remove the EXUP valve btw?

I was told (information could be wrong) that when you use a full sustem the EXUP valve will need to be removed, or not used. And you would need a jumper or resistor to do this. Am I wrong? I was also told you would have to adjust the jetting to improve low end as well, if you remove the EXUP feature.

Yes the exup will be removed with a full system installation. You will leave the servo motor though. Here is a pic i have attached showing what to leave. Just unhook the cables going to it :) Then the exup comes off with the header.

Now what do I need to fool the bike into thinking it's still there? And where can I order it from?

Thanks for the Picture, I appreciate it :)

To fool the bike just leave the servo motor thats all . You dont need anything else ;)

OK I'm all there now, thanks for your help. Now to find out if that jetkit will work with the serpent. since the serpent is 4 -2 -1

I just hung up with Micron and the Serpent Header is about 3 weeks out yet. Once it is relased Micron is also going to release a jet kit to go with it. This should eliminate some of the guesswork in tuning.

You can just leave the stock servo on the bike and still plugged in. You will just unhook the two cables going to it. The EXUP valve is inside the stock header, so not a big deal. When you take off the old exaust to put on the new you will be removing it, but as I said you will need to unhook the two cables from the servo and "unthread" them from the bike. Not a big deal I promise.

I hope someone will post a link to SAM's servo sub. With the servo sub you can remove and throw away the stock servo, saving some weight and cleaning up the under tank area a bit. I beleive he sells them through his company SAMMANA SYSTEMS. Please someone post a link.

Also if you are removing the stock exaust it would be the perfect time to remove the air pump emission junk hanging on the front of the motor (00 and up). Saves you about 4 pounds and help to stop the "popping" on decell. You can get a very clean kit to do this from IVAN. Please someone post a link to his site as well. I would do it but I am a no computer knowing MOFO...lol Good luck brother.:)

This is the link for samana Systems but it will cost you $99.95 http://www.samannasystems.com/

This is the link for Ivan's http://www.ivansperformanceproducts.com

I just talked to someone at Ivan's shop. May have been Ivan I don't know. He told me not to consider the serpent system, because of the 4-2-1 design. It will have problems between the 2-4000 range. So now I am considering the Akro system. Is this system worth the money? I know a lot of you have it and I want to hear some stories before I fork over $1000 for the system.

Here read this :

http://bikenet.lycos.co.uk/products/akrapovic.html

Thanks Champion: You and the others that have given me info have been a big help.

The damn Akra is way over priced, that being said it is well worth the money. You will not be dissapointed. You will not regret handing over the cash once you ride the bike with the pipe installed :) I think they Retail for around $1100, and I also beleive IVAN sell's them for around $900. Might be worth your wild to give him a call. Good luck. Let us know how much you love it when you get it done.:)