Hardcore Biker
I've been running my bike after doing the CDI mod (two weeks ago) and this week it seems to have really picked up in terms of performance - much more zip and torque. The CDI mod definitely made a difference initially but the last couple of days have been better again - WEIRD...
I was wondering if the Hyo has any form of engine management or is the CDI purely a hard-wired ignition system? (Or it may be a case of my bike running-in and getting better with the Km's.) Thoughts... DJ
Rev DJ
Fair weather rider
How many K you done now? I noticed that while I was breaking it in (1600+km) and even towards the end it felt like it didnt want to see the top half of the rev range. After breaking it in according to manufacturer's guidelines it was more than happy to hit redline!Originally Posted by Rev DJ
Iain
Hardcore Biker
Thought someone may be interested in this:
GT250 & GT250R HYOSUNG PERFORMANCE KIT
US $58.95
http://cgi.ebay.com/ebaymotors/ws/eB...S%252BI%252BSS
..
My KB Videos (and pics): here
Don't ever argue with an idiot.... they'll drag you down to their level and beat you with experience.
Fair weather rider
I was looking at getting a set of those. But then decided that I will just send it to JFK to get put on the dyno, before and after, jets and airbox mod. Spoke to them about it and they mentioned $300 approx.
Iain
Hardcore Biker
Just gone thro 2,400k's...
So, is the CDI hard-wired? Can it be altered? Cheers DJ
Rev DJ
Fair weather rider
You quite easily use a flat head watch screwdriver (one of those really small ones) to press the tab back so you can pull the wire from the back of the plug. To re-connect just pull the tab and put it back in the same part of the plug and the tab will catch again.
Iain
Potty Mouth
Have you had the work done yet? Noticeable improvement?
"It would be spiteful, to put jellyfish in a trifle."\m/ o.o \m/
Fair weather rider
Havent had it done yet... I need my bike everyday so finding a day I dont need transport is what Im waiting for.
I spoke to a few people and they suggested 10 more horsepower - at least that is what they got when they did the work. That is pretty significant - 33% more. Dyno before and after showed that. I will post my dyno results when they are done.
Iain
Hardcore Biker
What is JFK ?
..
My KB Videos (and pics): here
Don't ever argue with an idiot.... they'll drag you down to their level and beat you with experience.
Potty Mouth
Bike shop.
"It would be spiteful, to put jellyfish in a trifle."\m/ o.o \m/
Fair weather rider
Oops sorry, http://www.jfkjetskisandmotorcycles.co.nz/
The place I bought my bike
Iain
Moped rider
Finally!
Hyo GT250: Check
Carbon Fibre exhaust: Check.
BMC High Flow Filter: Check.
Re-jet and tune: Check.
Other repairs due to own stupidity: Check.
I honestly can't believe the difference to the sound and the performance these mods make. I feel like my bike actually has a bit of personality now! People actually look when the hyobag trundles down the street. I'm so happy.
If there's anyone out Manawatu ways that wants to help me gently bed the engine back in and go out for a ride after a half a year off riding post here. I've still got 800km to go before the engine will be back to 100% but i'm well keen to get back in the saddle and go for a blat.
Potty Mouth
Yeah, the re-jet certainly makes a difference.
"It would be spiteful, to put jellyfish in a trifle."\m/ o.o \m/
Double shot!!
Does this knock the fuel economy at all ?
ta,
DB
Forum whore
High flow air filter means the engine can suck in more air, so you need bigger jets to supply more fuel due to the larger amount of air.
So i guess fuel economy would go down, but in my experience, re-jetting doesn't hurt the fuel economy noticably, i got 220km on the GN before rejet, up the mains and needle and i got 220km after.
So in theory, yes. In practice, not really
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