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Hey I ordered some velocity stacks for my ZX10R. I want to know what people think of them and if they like them. If there is someone that has them do they have a good map? I will not be home to do anything to my bike till July, but i want to find out what people think. I plan on putting it on the Dyno to get me my own personalized map. peace
 

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they seem to sound alright. As far as how much hp they add, guess it depends on which year bike you have. I just installed them on my 06 this winter. Cant really tell if it made a difference cause I added a cam, head gasket, ignition module, different map, different ignition timing and 16 tooth sprocket. The bike overall from last summer to now. Night and day. I would have to say they are not worth the money or bang for the buck. A 16 tooth sprocket is. Good luck
 

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They aren't a huge difference by themselves. Its just a piece of the puzzle in the mod game. Don't get the bike remapped just for the stacks. Wait till you get something like an exhaust to go get it mapped. If you've been mapped previously, you won't be far off by just adding the V-stacks.
 

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Regarding the ZX-10R 2008 model.
Heard from another Kawasaki Superbikeracer of a cheap modification regarding the velocity stacks. Instead of buying expensive ones, you order 2 more of the right one from Kawasaki. (The one most to the right hand side if your sitting om the bike looking forward ) :) and then you change both of the middle ones to the ones you just ordered.
 

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Regarding the ZX-10R 2008 model.
Heard from another Kawasaki Superbikeracer of a cheap modification regarding the velocity stacks. Instead of buying expensive ones, you order 2 more of the right one from Kawasaki. (The one most to the right hand side if your sitting om the bike looking forward ) :) and then you change both of the middle ones to the ones you just ordered.
IM not sure what the right ones are but i read that we should add 2 short stacks to make all our stacks short for best performance. Can anyone back me up on this?:dontknow:
 

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Man I got mine 3 weeks ago I love em. My bike is real torquey now and has a deceit sound; but then I gutted the cat, put my A&R baffles in and have a lightweight sprocket. I havent mapped mines just yet, got the commander at home but just need time. And Dirt Ninja you need 2 short stacks that are located on the outer left and right inside the air filter compartment. By having all short stack you get more torque and a lil more sound
 

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IM not sure what the right ones are but i read that we should add 2 short stacks to make all our stacks short for best performance. Can anyone back me up on this?:dontknow:
At least i know that the right velocity stack is shorter than the two ones in the middle, so yes...all stacks will be short with this mod. I haven´t tried this mod myself so i can´t verify. Someone with good ZX-10 knowledge should be able to verify how the bike will react with all stacks short.
 

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When I put my velocity stacks they made a HUGE difference...but then yet I also put nitrous, a turbocharger, extended swingarm, 58T rear sproket 24T front sproket, BEET exhaust, Power Commander III, DynoJet ignition module, thinner head gasket, 3x3 big bore / stroke kit and 30 lbs of weight reduction on the bike at the same time.
 

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"Which" stacks???

they seem to sound alright. As far as how much hp they add, guess it depends on which year bike you have. I just installed them on my 06 this winter. Cant really tell if it made a difference cause I added a cam, head gasket, ignition module, different map, different ignition timing and 16 tooth sprocket. The bike overall from last summer to now. Night and day. I would have to say they are not worth the money or bang for the buck. A 16 tooth sprocket is. Good luck
Hio !

You wrote that you installed "velocity stacks" and left out "which brand" of velocity stacks.

If you did all the rest of the stuff at the same time, the question begs to be asked...... What did the stacks do?? Zero? 3? 5? 6 hp?

I think that your point is that a $25 sprocket = a nice big difference in the feel of the bike - but certainly, a $350 ignition module (I'm guessing it's a dynojet) is a waste of money, as it only changes the hp a percent or so (since it only changes the ignition timing +/- 2 degrees...... yeah ;-) I know that the software says +/- 10 :)

The stack thing comes up in a lot of forums and people say "stacks", but that could mean short stock stacks, long stock stacks, some other guy's billet stacks or our patented stacks.

Thanks (in good humor)

Marc
Factory Pro Tuning
 

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Hey guys!

Since the 04/05 and the 06/07 and the 08 are totally different stacks, could some of you guys edit your posts and make it more obvious what year you are talking about?

I'm envisioning some guy reading the 08 stuff on this thread and going out and buying 2 of the short 04/05 stacks for his 04/05 10... (and that's a pretty bad power losing combination!)

And he'll post that "stacks don't work" in a thread.... sigh and wink!

Marc
 

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THEslowKING you are refering to part # 14073-0044

2 cost about $7 depending on where you go. I haven't installed them yet but will tomorrow. I doubt I will notice much of anything. Maybe a lil pony or a wild A/F curve. We'll see tho since I get tuned next month. It's just like the other guy said " A piece of the puzzle "
 

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Which year "10" are you taking about?

THEslowKING you are refering to part # 14073-0044

2 cost about $7 depending on where you go. I haven't installed them yet but will tomorrow. I doubt I will notice much of anything. Maybe a lil pony or a wild A/F curve. We'll see tho since I get tuned next month. It's just like the other guy said " A piece of the puzzle "
Which year "10" are you taking about?

Thanks -
Marc
 

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04 - 05...
 

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please keep us informed if the shortening of the two middle stacks makes any noticable gains for the 04-05 zx10
 

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an old racer trick says yes. I will be dyno'd this coming month but it will be hard to tell without doing a before and after along with seeing what it does to the A/F ratio
 

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Can't

please keep us informed if the shortening of the two middle stacks makes any noticeable gains for the 04-05 zx10
Sorry - on an 04/05 zx10 (or any year, make or model bike)

You can't objectively compare the 4 short Kawasaki stacks to stock "2 short/2 long" stock Kawasaki stacks if you don't have a set of tests on the same bike, on the same dyno and, preferably, on the same day.

And the way most dyno "operators" work, you should do A-B-A-B testing - (test stock stacks, then the 4 short, then the stock stacks again and then, the 4 short again).

That way, you've got scientifically valid (relatively valid, anyway) data.

Best regards -

Marc
ps - when I tested the 4 short Kawasaki stacks on the 04/05, it was worth about 1/2 to 1 True HP at high rpm and so-so at lower rpms and not much midrange. May have hurt the lowend a teeny bit.
 

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cough

hmmm obviously you don't know my tuner. well known Kawi Champion..

It's going down like that, but far more advanced. My tuner and GOD of the streets/tack would not set me up for failure. They will be up and posted by the end of May. Would've been in a week, but I am leaving the area for 2.....
 

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I only know Muzzy and Chandler -

cough

hmmm obviously you don't know my tuner. well known Kawi Champion..
wink....
Of course not, you didn't name him....... ;-)
I know some decent Kaw tuners - Rob Muzzy? Scott Beach?

It's going down like that, but far more advanced. My tuner and GOD of the streets/track would not set me up for failure. They will be up and post by the end of May. Would've been in a week, but I am leaving the area for 2.....
All rightie, Good, then!
We'll see the A-B-A-B test or some advanced procedure in a month or so.

.......................

Hey - don't think about the "failure" thing in tuning - A tuner only fails when he quits.

A good tuner tries a number of things that don't work and a lot of things that are simply "better than stock" - and if you are lucky, the tuner will work hard enough (or you will pay them enough) find something that works optimally.

"Optimal tuning" means, "if you change it at all, power is less".

For example:
If the 4 stock short ~20mm Kaw stacks (which I am pretty sure has been discussed at length on this or a similar forum) gave 2 hp on top, would 2 stacks, at 30mm, make 1 or 3 hp more?
Would 2 inner stacks of 40mm be even better? Would 40mm make better upper midrange and still make "better than stock" at peak?

From a tuner's point of view, you may be giving him a bit more reputation than he wants to shoulder - ask him? :)

In good humor.... :) and have a good day -

Marc
ps - tell Ricky that Marc from Factory Pro said "Hi". Thanks -
 

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If the 4 stock short ~20mm Kaw stacks (which I am pretty sure has been discussed at length on this or a similar forum) gave 2 hp on top, would 2 stacks, at 30mm, would they make 1 or 3 hp more?
Would 2 inner stacks of 40mm be even better? Would 40mm make better upper midrange and still make "better than stock" at peak?


Marc

Hopefully he will be able to determine this and put it to rest. Ricky G will over see this and I am sure he won't want to be made to look stupid. If it doesn't work then cool. At I know for my bike. But then different dyno's and different Alt's could always show differently as seen in the past.
 
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