just an update on this problem for yis , it looks like its the tyga stainless system on the bike that is the problem. DYNOJET uk have said they have seen this problem before with full systems on these bikes, so im just wondering if anyone has had problems running a full tyga stainless system on their nc?
I'm gona have to get me hands on an original system to see what happens with it on , feel free to lend me one somebody!!!! I live in Ireland by the way
just wondering if an nc30 system will fit as I can get my hands on one?

I'm currently running a full stainless Tyga system on my NC35 without any issues at all. It is a racebike that's running without an airbox/filter set-up so the jets I'm running definitely wouldn't suit your set-up. An NC30 exhaust will fit an NC35 as far as I know.

If your air/fuel ratio is fine, the carbs are getting fuel, then all I can suggest is finding someone with an NC30/35 that's runnign well and start swapping various electrical components, hopefully this'll pin point the problem. Good luck

Peavey... seriously.

I've 2 bikes. Both with full systems on. They work lovely. There are probably 10 or 15 people on here with full Tyga systems and none of them have had to contemplate removing it as it doesn't work.

The Dynojet guys are full of BS. If they cannot set a bike up on a dyno then it is their bad technique rather than some proven hardware.

The carbs don't know what is on the bike and they don't care

CMSMJ1 wrote:Peavey... seriously.

I've 2 bikes. Both with full systems on. They work lovely. There are probably 10 or 15 people on here with full Tyga systems and none of them have had to contemplate removing it as it doesn't work.

The Dynojet guys are full of BS. If they cannot set a bike up on a dyno then it is their bad technique rather than some proven hardware.

The carbs don't know what is on the bike and they don't care

I'm not knocking the tyga system , im just going by what the guys in the shop are telling me thats all.
The air/fuel graph is very good , its actually better than another graph they showed me from a previous bike they dyno'd and it was making full power runs.
This would rule out a carb problem surley

it's just that its a trial and error job and the exhaust system is what it has came down to.
so can I go ahead with the nc 30 system or would there be any complications?

I hear you. There is no way that the bike is set up - that dyno print on the previous page is not good. Surely you can see that? There is no power as it is not revving out as much as it should and that is nothing to do with that exhaust.

Have you got any more graphs - i.e, that very good one you comment on in your lat post?

No I dont have that very good graph , I seen it in the shop on the dyno computer itself but it basically had the curve like the graph you posted up but the air/fuel ratio was not as good as mine,
the carbs on mine have hrc spec spring's , 110 main jets and 0.5 mm washers on the needles. The shop has told me valve clearances are good ,carbs balanced, compression good , firing on all 4 , coils good but the bike is still making no power.
They have done dyno runs with the air box out , filter out ,can off , and vice versa but its still the same. Its not some back alley setup either, these guys have a good rep and I trust them.
where do I go from here???
where do I go from here???

it is a basc beast at the end of the day.

if you are happy and have seen:
it has good A/F ratio
It has good compression (and do you know what the figures are?)
Valve clearances (set to what tolerance - loose or tight? - HRC spec looser BTW)

Then the bike should be making the specified power.

Unless something mechanical is not right and there are losses in the system to the drive wheel. Such as
Binding brake - common
knackered bearings - can be often the case
chain that is too tight
chain that is not lubed enough

Something is fishy if none of that is sorted.

The main thing for me in the graph you posted was that the bike did not rev out. You have not got something stopping full throttle on the carbs? The slides are all able to rise open and fall at the same rate?
You say HRC spec springs - they from Rick Oliver or are they proper HRC ones?
The slides are standard and deffo have no miniature holes in them and are seated just right under the metal caps
?

Just an update on this problem for yis.
there is a tiny hole in each slide of the carbs , just beside where the needle exits the slide.
I'm assuming this shouldnt be there and is causing my problem so im going to set the bike up standard and go from there meself
thanks for the info cmsmj1

lol..someone thought they would drill them? Muppets.

That explains why it is not revving out. New slides will sort it!

Glad it is getting there

Any idea's where I would get the slides?