Help with mods

[dilz]

So,im now a stoked owner of a 2010 drz400sm!!
Its stock standard and im keen to get a bit more pep out of it.After a bit of googling i understand that the 3x3 airbox mod,exhaust,pair valve/solinoid and jetting will make my bike go better and me happier :yes:
Can any one tell me the right jet kit and/or parts needed to do the carb side of the mod??
Im pretty sused with the other mods its just i dont want to go down the wrong path with jet size so if someone has done this in nz with success and can tell me what to buy it would be much apreciated!!

Also are their any negatives/harm to the engine from these mods?

Thanks !

[McWild]

Depending on the pipe you will most likely want either a 155 size main jet or a 160 size main jet. However since these things take a bit of playing around/fine tuning, I would suggest you purchase either a Dynojet jet kit or a JD jetting kit, personally I haveheard the most positive feedback regarding the JD kit but it seems like much of a muchness as I ran the Dynojet and it was mint. If you want to make sure you have all the parts for it (some carbs require you to drill out a small plug for proper installation) then that is probably the way you want to go.

Dynojet's page with the SM kit: http://www.dynojet.com/jetkits/motorcycle/suzuki.aspx

JD jetting: http://www.jdjetting.com/xcart/product.php?productid=53&cat=9&page=1

Assuming they are properly installed, ie you don't mess up the install and run a crazy lean jetting setup you are unlikely to notice any negative impact on the engine. I mean, you're putting more fuel/air into the cylinder hence bigger explosions hence more power so it's the sort of thing, you might only get 45,000kms from your DRZ instead of 50,000kms.

However if you look on sites like advrider, supermotojunkie, thumpertalk there are stories galore of people doing the full big bore, cams, FCR39mm etc and achieving that sort of mileage on the same top end. Hell I even read one thread where a guy claimed to have thrashed his DRZ day in, day out, with all the good stuff on it, having done dirt, trails, racing, and had it blow up on him at 60,000 miles. With that said, you probably shouldn't be bothered by a few intake/exhaust mods. My 2c. Enjoy your bike. They go much, much better with those mods, but I'm told the FCR carb is when things really start to pick up. Things like your front wheel.

[dilz]

Depending on the pipe you will most likely want either a 155 size main jet or a 160 size main jet. However since these things take a bit of playing around/fine tuning, I would suggest you purchase either a Dynojet jet kit or a JD jetting kit, personally I haveheard the most positive feedback regarding the JD kit but it seems like much of a muchness as I ran the Dynojet and it was mint. If you want to make sure you have all the parts for it (some carbs require you to drill out a small plug for proper installation) then that is probably the way you want to go.

Dynojet's page with the SM kit: http://www.dynojet.com/jetkits/motorcycle/suzuki.aspx

JD jetting: http://www.jdjetting.com/xcart/product.php?productid=53&cat=9&page=1

Assuming they are properly installed, ie you don't mess up the install and run a crazy lean jetting setup you are unlikely to notice any negative impact on the engine. I mean, you're putting more fuel/air into the cylinder hence bigger explosions hence more power so it's the sort of thing, you might only get 45,000kms from your DRZ instead of 50,000kms.

However if you look on sites like advrider, supermotojunkie, thumpertalk there are stories galore of people doing the full big bore, cams, FCR39mm etc and achieving that sort of mileage on the same top end. Hell I even read one thread where a guy claimed to have thrashed his DRZ day in, day out, with all the good stuff on it, having done dirt, trails, racing, and had it blow up on him at 60,000 miles. With that said, you probably shouldn't be bothered by a few intake/exhaust mods. My 2c. Enjoy your bike. They go much, much better with those mods, but I'm told the FCR carb is when things really start to pick up. Things like your front wheel.

Just the answer i needed mate! thanks alot for ya help il check those links out!

[dilz]

SO,ive just done the 3x3 and jetting kit mod (stage 2) to my 2010 drz400sm,also done the pipe,pretty much a 2" straight through with a pro circuit muffler (LOUD).

It definately goes better but it still feels like it may be restricted in 1st and second but it didnt have the solenoid on the carb that ive read about on the net that restricts full power in these gears?
Does any one know if the 09/10 model restricts it in sum other way that can be changed?? Its a Mikuni carb btw.

cheers

[SVboy]

AFAIK there is no restrictor on DRs. If you feel it could go better-a bit of dyno time might improve fueling. Ashburton Honda have a good rep if you go down this route.