Nikko's G-Pack and full exhaust

[gs500fromnb]

http://www.nikkoracing.com/

ENGLISH ----> http://direct.nikkoracing.com/boutique_us/liste_rayons.cfm?code_lg=lg_us



Anybody try em? is it worth it? Would I need the bike jetted for these?

[JetSwing]

probably won't work on our gs...it's for fuel injected bikes only.  

no, you wouldn't have to reject if you could use that.  :mrgreen:

[96gs]

This one will work. It says its for the GS.

http://direct.nikkoracing.com/boutique_us/fiche_produit.cfm?type=1&ref=GP-S508&code_lg=lg_us&pag=1&num=1

[gs500fromnb]

Yeah I know the Gpack will work since i seen it on more than one site... I dont know how well it will work or if its worth 150$ or so for it..

But i've been looking for exhausts and mods for the bike for a LONG time and this is the first decent exhaust I found that would be made for it ( http://www.nikkoracing.com/page%20moto%20position/suzuki/S%200500%20GS%20E%2089.htm ) The full is really 2-1 not 4-1 ... and it will fit the bike. The slip on would be my prefered option anyway.  But for now I can only import it from France, I dont knwo if I can get a shop from here to import it for me.

I know they are both (exhaust and Gpack) going to work with the bike, im just wondering weather or not anybody tried them and if its worth it.

[stefman722]

What is a Gpack. Could someone let me know what it does? thanks. And the slip on for for 2004 gs500e, would it for the F. I got family in france in which could buy it and ship it. That wouldnt be a problem. Just about the fit.

[dgyver]

Even if it would work it is just a $0.10 resistor or two.

Also refered to as a TRE (timing retard eliminator). The fuel injection system has a different map (jetting) for each gear. Suzuki built a leaness into the system, usually in 3rd gear and around 3-4000rpms to beat emissions. This also created a stumble. Yes I do have a TRE on my TLR.

[stefman722]

So this wouldnt be worth 140$? Do you notice any performance gains? Someone should build one.

[gs500fromnb]

Even if it would work it is just a $0.10 resistor or two.

Also refered to as a TRE (timing retard eliminator). The fuel injection system has a different map (jetting) for each gear. Suzuki built a leaness into the system, usually in 3rd gear and around 3-4000rpms to beat emissions. This also created a stumble. Yes I do have a TRE on my TLR.

but the TRE only works on FIs right? This has a model specific to not only the GS500 but to other carburatored bikes as well.

[dgyver]

They may have done something different with the electronics in the 04+ models, since the ignition rotor and pick-up are different, that would reatrd/advance timing instead of adjusting fuel. Without seeing an actually one (not a generic picture), I would not buy one. The effects of installing a TRE are actually very minimal, just a smoother throttle response.

[gs500fromnb]

They may have done something different with the electronics in the 04+ models, since the ignition rotor and pick-up are different, that would reatrd/advance timing instead of adjusting fuel. Without seeing an actually one (not a generic picture), I would not buy one. The effects of installing a TRE are actually very minimal, just a smoother throttle response.

I do have full access to an awesome dyno... if the funds are right I could buy one this summer and do a before/after comparison. Since its only effective in 2nd and 3rd gear and dyno's are done in third... I'd be able to see its effect on the powercurve.

This is where it say's its effective :

ignition 2nd. 2900-10300
ignition 3rd. 2300-10300

[stefman722]

Without seeing an actually one (not a generic picture)

Here is the exact one for our bike. It says so right on the unit.

[dgyver]

After looking at the connectors for each of there items, I see that there are some that are different.

Just as an example, here is all that is required to make one for the TL with a cost less than $10.
http://home.iprimus.com.au/stevebm/ssatret.html

The problem is knowing what resistor is needed for the GS
hmmm.....now who has a wiring diagram for a 04+ ?

[stefman722]

figure this out for us. Then you could build one  

[tdan553527]

Here's a wiring diagram for the 04

http://img.photobucket.com/albums/v300/tdan553527/Page26.jpg

[dgyver]

Thanks, I will look into it.

[stefman722]

Have you found anything yet?

[dgyver]

I did look at the wiring diagram but it did not show anything that would indicate that it would do anything. I could be wrong since I am more of a mechanical person than electrical.

[starwalt]

Just stepping into this discussion....the GS F has a totally different ignition controller than pre 2003 bikes. A throttle position sensor feeds into the "black box". I do not know exactly where this gadget plugs into the F, but my guess is somewhere in that circuit.

There is also a solenoid controlled by the F igniter. The function of the solenoid is not spelled out in the Suzuki manual either (at least as far as I have read).

Here is a simplified drawing of the non-US H that seems to be the same as the 04 US F. I modified it to show the Gear Base Assy input to the ignitor module.

[juno]

If I remember correctly, I think it only raises or eliminates the rev limiter on the GS 500, as the bike is not FI

[juno]

Well, I see on another post the GS apparently does not have a rev limiter.

However, I looked up the info to see if I remembered correctly.  From the NIKKO site:

Nikko Racing developed the G-Pack module to optimise the performance of engines to the maximum. Particularly during the phases of acceleration from low to mid range. G-Pack was especially developed to bypass the RPM-limitator installed by the manufacturers in order to conform with local regulations imposed in a number of countries. The result of this research : maximum torque and power with exceptional acceleration in the low and mid range permitting full exploitation of your engine power band resulting in greater riding pleasures. G-Pack is composed of an electronic box with dimensions of 45X45X16 mm. It is installed in a few minutes in between the connectors and the ignition box (CDI) of the motorcycle. On account of the compatible pins, it is connected to the original electric circuit without any changes or modifications. G-Pack can be disconnected in a moment and your motorcycle restored to its original configuration. Warning : G-Pack changes engine's characteristics and performance. The utilisation of the module is not allowed on public roads : its use is strictly meant for competition on closed racing tracks.

As it pertains to the GS 500:

G-Pack Suzuki GS 500 E
01-04
GP-S508
ignition 2nd. 2900-10300
ignition 3rd. 2300-10300


Looks like it is extending the useful range within 2nd and 3rd by eliminating the rev limiter, if there is one on model years 01-04

:dunno: