DRZ400E 2010 street legal gutless

[dmoo1790]

I picked up a new DRZ400E street legal on Tuesday. It feels gutless under load and/or anything more than about 1/3 throttle. Took it back to the shop and they said "that will be the card restrictor". So I said remove it and they said they did when I left the bike with them on Friday. But today it doesn't feel any better. Still won't hold revs on a hill, surges when I try to open the throttle and even stops accelerating on downhills. Anybody had a similar problem? I suspect it's running extremely lean on main jet.

[dino3310]

take it back bro, dont waste any time thinking about what it could be thats there job

[Taz]

I've ridden a road legal E and it did'nt feel like that at all. I owned a off road only DRZ and that was great.

[junkmanjoe]

ask Bart.. hes a x drz400 dude......

yea other than that, if it a shop sale,, take it back. take another one out for a blat see if its any different...

JMJ

[Padmei]

Welcome to KB. Have you ridden one before buying it? Is it maybe just a drop in performance coming from the big litre bike?

[buggsubique]

Welcome to KB. Have you ridden one before buying it? Is it maybe just a drop in performance coming from the big litre bike?

Could be something to consider...what's it geared at and what carb is it running? My rd legal E kicked arse...for a 400.

[dmoo1790]

Thanks for the feedback folks. Yes, I will be heading back to the shop (again!) on Monday morning.

Hi Padmei, No I hadn't ridden the 400 before but I have recently ridden a DR200 and DR650. I swear my bike feels closer to the 200 than the 650 and that can't be right. In fact the 200 carburetted better but just didn't have much grunt which is acceptable because it's only a 200. The 400 should feel much stronger than the 200 but it doesn't.

[dino3310]

sounds like a dog mate, hope they sort it quick smart for you

[dmoo1790]

Turns out there was a huge bit of rubber blocking about 80% of the intake manifold. (I would post a pic if I could figure out how to insert a jpg.) This is put in so the bike can pass Australian ADR noise rules. There are actually two restrictors. The first one, which was removed on Friday, just limits the throttle opening. (No wonder it didn't feel any better after removal!) The second is the intake rubber. I don't know why the mechanic didn't tell me about the rubber on Friday. All he keeps saying is that Suzuki don't want the restrictors removed until first service. The sales guy rang Suzuki to check if it was OK to remove the intake restrictor and they said yes. Usual large corporate bad communication I guess. I will be writing to Suzuki to complain and tell them that the restricted bike is downright dangerous in traffic it's so slow.

[dmoo1790]

OK, I figured out how to attach the pic.

[dino3310]

:woohoo: sorted, how she feeling now dude, bet the fronts pointing skyward often.

thats a pretty heavy handed restriction, the ockers must have some pretty hardcore restrictions:wacko:

[Padmei]

Is it going alright now? Does the carb need altering?

[offrd]

Wow! That is crazy!

That is half a Chinese car!

[merv]

For some reason Suzuki do this with some of the models and even back in 1998 when I bought a DR250R it was like that and you have to slice it out with a model knife. The other thing is you do have to run them in a bit as all the bikes I've bought aren't flash straight out the shop, they do take a few kms to loosen up. As in how many kms have you done so far?

[dmoo1790]

Is it going alright now? Does the carb need altering?

Goes much better now. Not thrashing it yet as only 250 km on it but already feels way stronger. No re-jetting done as far as I know.

[dmoo1790]

For some reason Suzuki do this with some of the models and even back in 1998 when I bought a DR250R it was like that and you have to slice it out with a model knife. The other thing is you do have to run them in a bit as all the bikes I've bought aren't flash straight out the shop, they do take a few kms to loosen up. As in how many kms have you done so far?

Only 250 km so far. Already feels much, much better. Unbelievably bad with that rubber thing choking most of the intake.

[dmoo1790]

:woohoo: sorted, how she feeling now dude, bet the fronts pointing skyward often.

thats a pretty heavy handed restriction, the ockers must have some pretty hardcore restrictions:wacko:

No monos until I run it in. And I don't see how the Ozzies or anyone would put up with the utterly weak performance with the restrictor. My guess is they remove it also but keep quiet about it.

[CookMySock]

Suzuki don't want the restrictors removed until first service.Thats not a dumb idea though. A pity they can't just tell the customer that to begin with, and save them a lot of worry.

Steve

[dmoo1790]

Thats not a dumb idea though. A pity they can't just tell the customer that to begin with, and save them a lot of worry.

Steve

Hmm. I don't believe the intake restrictor serves any purpose other than passing ADR noise testing. It makes the bike dangerously slow in traffic IMHO and I don't think you can load the engine enough to properly run it in.

[thommo77]

Turns out there was a huge bit of rubber blocking about 80% of the intake manifold. (I would post a pic if I could figure out how to insert a jpg.) This is put in so the bike can pass Australian ADR noise rules. There are actually two restrictors. The first one, which was removed on Friday, just limits the throttle opening. (No wonder it didn't feel any better after removal!) The second is the intake rubber. I don't know why the mechanic didn't tell me about the rubber on Friday. All he keeps saying is that Suzuki don't want the restrictors removed until first service. The sales guy rang Suzuki to check if it was OK to remove the intake restrictor and they said yes. Usual large corporate bad communication I guess. I will be writing to Suzuki to complain and tell them that the restricted bike is downright dangerous in traffic it's so slow.

Strange. The KLX450R is road legal over there. Im wondering if they do it to that all large dual purpose bikes?
Man, if the big bore KLX was road legal here, Id be first in the line!

[warewolf]

Part of the issue is that, at least in the dual-purpose/enduro market, the Aussie distributors actually go to the effort of getting them road legal - whatever it takes. AFAIC, if they have to fit restrictors ex-factory, and the dealer removes them as part of the PDI, then it's fine by me if it means a road legal bike.

DR-Z250s are also similarly restricted, so it is not a big-bore thing. However the big S is regularly slammed in the magazines for having the heaviest and loudest exhausts. Maybe it is easier to fit a restrictor than a better exhaust?

Even the new RMX450Z has similar restrictors... and that's a non-road legal bike!! At least here it is; dunno if other markets - eg Aussie - can rego it.