If any of you guys are running Ivan Performance's excellent flies out street map for slipons, you probably already know he developed the mapping using the popular Yoshimura TRC system although this map seems to work well with just about any slipon exhaust system and even the stock pipes. A full system requires different mapping and nets a nice increase in top end power from 6000 to 10,000 rpm with slightly more over run but you pay for it big time on the low end. One thing I did not know until I contacted Ivan, was that he developed the mapping without the Yoshimura Quiet Inserts installed. I had tried to remove mine but found the retaining screws had been welded in place so I left them in. Last weekend I had a little time on my hands so I got out the Dremel Tool and ground the screw heads off, pulled the inserts and whoa, what a difference! Without any apparent loss in low end, the midrange and up torque is nicely enhanced and the sound is much deeper and raspier. I have to admit I had gotten used to the incredible power of this setup but this definitely pegged the Giggle-Meter. If you have these pipes with the inserts, pull em out, I think you'll like it!

Kruz

Kruz:

Do you have the slip-ons or the full system? How does one get the map from Ivan for this setup?

Thanks. -bg

Next time you talk to Ivan, ask him to sing up. Moooooooo ah ha ha ha!

1-184-526-8121 , Just ask what he now requires .If you buy your performance upgrades there, he gives you the map . Hub, I will send this link to Gina's Computer ,maybe Ivan will post ?

* Last updated by: Romans on 3/19/2009 @ 6:45 PM *

Good to see you here, Kruz.

I've been wondering what it's like running the R 77's with them IN! Not that I'm likely to do it voluntarily but I am really curious. When the 77's first went on I figured I would run them open until I got popped for it, then try to get myself out of it by telling 'em I'll put them in and all.........But so far, so good. There's just such a nice bass heavy rumble with them out and on the '08 with the flys in and no PC I really can't complain. Unless Johnny Law shuts me down.

Kruz,As always thanks for you helpful information.I have been considering this mod from way back at the old forum but
cant seem to get around to doing it.Sounds like there is a little more power from these pipes to be found and im all for that. I just need to verify the location of the screw head that your talking about .Also is the a way to reinstall the inserts with screw head ground off???

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* Last updated by: doug on 3/19/2009 @ 8:38 PM *

So, Kruz, is this what you're saying ?
That slip-ons give more low to mid range power and a full system give more top end power (with an appropriate map)?
Is this true?

Just curious because I spend most of my time at the low end of the RPM range, so perhaps a slip-on is more beneficial "for me".

Thanks for your input.

BG wrote:

Kruz:
Do you have the slip-ons or the full system? How does one get the map from Ivan for this setup?
Thanks. -bg

Hi BG, I have the Yoshimura slipons. When Ivan published the power and torque curves for his ZX-14 flies out mapping back in 2006, he tested a number of different pipe combinations. If I remember he tested the TI Force full system, Tsukigi full system, Yoshimura full system and Yoshi slipons sans the aforementioned inserts. He discovered that the slipons gave the most torque down low and in the midrange while the full systems gave a big hit on top with a softer low end response. Now remember, the catalysts were in the exhaust cans back in '06/'07 so when you added the slipons, you ditched the cats and the stock header system is pretty efficient. This is not true of the '08s, Kawasaki added another catalyst in the exhaust collector. Anyway, I decided to go with the slipons and he was right, it does hit much harder down low, right where you need it for most of your riding. I did some tests the other night and my bike hits arm stretching hard at about 2000 rpm in first gear. His mods and mapping are for the '06/'07s.I haven't talked to him in a while so I don't know what he has developed for the '08/'09 ZX-14. If you buy a PCIII from him he will upload the map of your choice on there for free. His phone number is 845-268-1212 and web site is at http://www.ivansperformanceproducts.com/

I will try to find the published torque and horse power curves for his stuff.

Kruz

* Last updated by: Kruz on 3/20/2009 @ 8:22 AM *

Thanks, Kruz.

I have an 07 with flies out and PC III installed. Sounds like I need the slipons and the magic map. I'll pursue this. I had been considering the full system until now. Very helpful... -bg

Doug wrote:

Kruz,As always thanks for you helpful information.I have been considering this mod from way back at the old forum but
cant seem to get around to doing it.Sounds like there is a little more power from these pipes to be found and im all for that. I just need to verify the location of the screw head that your talking about .Also is the a way to reinstall the inserts with screw head ground off???

Hello Doug, it's good to hear from you again! Yes, you are pointing right to the screw in question except that you must remove it from the bottom side. You appear to have the same carbon fiber end cap that I have on mine but I don't see the oval access hole on the bottom of the cap that allows you to get to the screw head. If you do have the access hole, you can see up inside there with a flash light. There is a small allen screw that retains the insert. Earlier models like mine had the set screw welded in place while on later models they did not weld the screws. I used a Dremel Tool with a 1/4" diameter abrasive stone and ground away the weld, then removed the screw with an allen wrench. After removing the allen screw you can grab the insert with a pair of needle nose pliers and pull while wiggling it a bit and it will pop free. If you don't have the oval access hole you will need to cut one or drill out the pop rivets that retain the end cap, remove the cap and then remove the screws. You'll need a pop rivet gun from Sears to reinstall the rivets.

Kruz

* Last updated by: Kruz on 3/20/2009 @ 8:36 AM *

So do the Yoshi's come with the silencers IN?

And if you don't want them, you have to take them OUT?

BG wrote:

Thanks, Kruz.

I have an 07 with flies out and PC III installed. Sounds like I need the slipons and the magic map. I'll pursue this. I had been considering the full system until now. Very helpful... -bg

Excellent, I'd give him a call and see what kind of a deal he can give you on your slipons. He is usually within a few bucks of the big boyz and will throw in the appropriate map and excellent tech support for free. If you get a chance to talk to Bad in Black, he runs Ivan's setup and loves it. I think Painterdude runs it as well. Glad to help!

Kruz

The R77's came with them uninstalled.

Gumybob wrote:

So do the Yoshi's come with the silencers IN?

And if you don't want them, you have to take them OUT?

Unfortunately yes Gumybob. I hated the darn things, made the exhaust too quiet but when I found out mine were welded in place I got lazy and left them in for awhile. Sure glad I took them out, this thing has stones now! I'll see if I can go home for lunch and take some pics so you guys can see what we are talking about.

Kruz

* Last updated by: Kruz on 3/20/2009 @ 8:31 AM *

Jayfell wrote:

Good to see you here, Kruz.

I've been wondering what it's like running the R 77's with them IN! Not that I'm likely to do it voluntarily but I am really curious. When the 77's first went on I figured I would run them open until I got popped for it, then try to get myself out of it by telling 'em I'll put them in and all.........But so far, so good. There's just such a nice bass heavy rumble with them out and on the '08 with the flys in and no PC I really can't complain. Unless Johnny Law shuts me down.

Hello Jayfell, you are right in Ivan's backyard, he's in Rockland County. I'd stop by sometime, rattle his cage and see what he's got in the hopper for the 08s.

Kruz

Yeah, I've been meaning to; I used to drop by up there on occasion. I took my ZRX there a while back and looked at his 06(?) zx14 test mule which got me going towards buying my 08 right across the river in Ossining. He really woke up the ZRX and one of these days I'll stick my head in and say hello again and report back here on what's up.

But honestly, this bike is probably going to live pretty much mod free for a while as it's doing everything so frickin' right. Well, except the suspension. Which leads me to the best mod that I could make: Dropping 40 lbs of my own 230 would knock every performance based number up

Here is the view of my Yoshimura end cap with the factory provided access hole at the bottom (six o'clock) already in there. If you dont have this hole, you will either need to cut one (Dremel Tool highly recommended here) or remove the end cap by drilling out the rivets. Once you can see the allen head set screw clearly you can tell if it's welded in place or not. If it's welded, take the grinder to the weld, takes about five minutes per side. Second pic is of the actual insert after removal. You can clearly see the threaded hole in the insert that takes the set screw. Also note how small the insert diameter is compared to the big hole back there after removal. She will get loud!

Kruz

* Last updated by: Kruz on 3/20/2009 @ 1:22 PM *

I found the dyno chart for the '06/'07 flies out, TRE008, Yoshimura Slipons and Ivan's mapping. Ivan told me this dyno pull was done without the quiet inserts. This chart also graphs the torque and horsepower curves for the stock bike with TRE008 only. Ivan now recommends using a TRE006a instead of the TRE008 if you are flies out. Although the TRE 008 by itself gives a healthy increase over stock, it's nothing like the flies out effect. I also included the graphs so that you may compare the dyno charts for different 4 into 1 systems. You will notice the Yoshimura slipons give the most low end while the 4 into 1 systems give more on topend. Also notice how gnarly (bumps and dips) the torque curves are with some of the 4 into 1 systems on there. Of the three 4 into 1 systems, I would go with the Yoshimuras if you want to go that route. It has a low end response closest to the slipons with a nice net increase on top.

Kruz

* Last updated by: Kruz on 3/23/2009 @ 8:06 AM *

Great information and dyno charts. I run the retro M4s on my 07 and pulling the baffles helped her breathe even more. And the sound is just straight up wicked.

Extracted the inserts last saturday from my yoshis and unleashed the beast!!! I must say that i really like the low
drone coming from the pipes.The exhaust really screams when you get on the gas.Cant quite tell if there is more top end to the bike.(just hold on) But it does seem the the bike is running a little cooler now due to less back pressure.

The removal went really smooth
1.Removed slippons
2.Ground access hole with dremel
3.removed hex screw.(no tack weld)
4.giggled the pipe like a mad man till the screw dropped out
4.cleaned ,waxed slippons and reinstalled

Very happy with this mod but i will simply stick the inserts back in for any long trips due to the added noise!!

pc111,Yoshi TRC,Ivan`s map,Tre006a,no flies,scraped the inserts

I'm glad you like it Doug. I did notice the temperature drop also, I was running only two bars above the "C" the other night when before she would get up to three bars. Yes, it is much louder but I also feel more power especially in the midrange. She was pulling so hard the other night it scared me. I haven't topped it out since pulling the inserts so I don't know about the topend but it should benefit as well from freer breathing.

Kruz

* Last updated by: Kruz on 3/24/2009 @ 8:23 AM *

Kruz,Thanks again for the tips and the pic`s.I like making dam sure before i start grinding on my bike!!! LOL

Glad to help Doug.

Kruz

FWIW: I just installed a set of Carbon TRC slip-ons, and they showed up with the quiet insert removed. cranked it up after installing the mufflers (watch out; one of the exhaust tailpipe clamps is slightly large than the other, and it goes on the LH side).. and got The Look from Wifey who then said (and I quote) "You're as noisy as those damned Harleys!"

hmmm. time to put in the inserts I guess. problem: there was some sort of rivet in the pipe that didn't look anything like the above replies had in them, and I couldn't get the inserts into the mufflers due to the rivet heads. so I looked in this reply for help, saw nothing that looked like what I had so I wandered back out to the garage and squatted down to look closer. still looked like a flat rivet head that needed to be ground out. I started to haul out the Dremel and had a thought: how about if I look REAL close with a flashlight?

problem solved. they're knockouts! (think knockouts on a light receptacle) - coupla whacks with a screwdriver, and some determined work with a set of needlenose and the plugs hit the garage floor.

the inserts went right into place, and Wifey sez "that's better. now you sound like more like a proper bike should."
Yes, dear.

so, if anybody has this issue, take a careful close look & whack 'em with a screwdriver.

and of course (sigh) my camera's battery was dead and nobody can find the charger.

sorry.

* Last updated by: ZX14Bobo on 9/26/2009 @ 10:57 PM *

My wife runs the roost also!!

* Last updated by: doug on 9/26/2009 @ 11:16 PM *