sv1000sz fluctuating power

[rekab74]

I've been noticing for a while a power fluctuation in 5th or 6th at 70/80ish mhp, its feels a bit like an old 2stroke about to heat seize and then releases on and off, its very gentle and random but very annoying.
Any ideas what the cause could be? :confused:

[mattSV]

I've been noticing for a while a power fluctuation in 5th or 6th at 70/80ish mhp, its feels a bit like an old 2stroke about to heat seize and then releases on and off, its very gentle and random but very annoying.
Any ideas what the cause could be? :confused:

Can't remember what the revs are in 6th at 70/80 on a sv1000 - is it about 3-3500rpm?

If so, I would start with throttle bodies - may need synching...

[Ratty]

I had this on my SZ after adjusting the TPS to the guide on here. I put it back to where it was and problem went away again. It can sometime feel a little hesitant at 5000 to 5200. May be worth chatting to svracer and arranging to have the ECU re-mapped including TPS setting. They use something better than the Yoshi box and have loads of experience. Only wish I was closer to them to do the same.

How do you like the bike ? They are a gem. Too much character for many but I love it.

Ratty

[Nelson]

Personally, I reckon he should get some pictures up with his new exhausts! ;)

[Jackie_Black]

If the sv1000 is mapped anything like the DL1000 i just got rid of then i got rid of the dreaded chudder by getting the throttle bodies balanced and the richening the idle circuit with a yoshi box by about 1% this made it absolutely spot on and removed the lumpiness.

[rekab74]

thanks for the info people :p its been very helpful
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs740.snc4/64013_447447194511_676004511_5146174_3152715_n.jpg (http://www.facebook.com/photo.php?pid=1935723&id=676004511)

[Nelson]

Lovely! ;)

[warrenhewitt10]

ooo i like that

[davepreston]

mine used to look like that :(

[Cymraeg_Atodeg]

It is the paint scheme, causes the bike to hesitate because it thinks it's a Gixxer! Lol

as is said above, it is either TPS or maybe you got an air filter that is too dirty/too restrictive as cruising at 70/80mph (4,500rpm) the engine needs quite a bit of air, but, is not pulling as hard as when hard on the gas.

fearing that ask on "the portal" too

[Bluefish]

mine used to look like that :(


lol ;)

[monkey]

...May be worth chatting to svracer and arranging to have the ECU re-mapped including TPS setting...

Sorry to digress but I didn't think ECUs on SVs could be mapped?

[Ratty]

Monkey

SV650Racer mentions three methods of remapping the stock ecu in this (http://forums.sv650.org/showthread.php?t=155470&highlight=remapping+ecu&page=3) thread. The best being the Pro-bike. I think the most common is performed using the Yoshi Box.

Ratty

[monkey]

Thanks. I meant can the actual ECU be remapped as opposed to a plug in fueling adjuster.

[Ratty]

Yes, that's what these boxes do. Plug, adjust on the dyno and remove. Not left in like a PC III.

Ratty

[monkey]

I see. I didn't know that. Sorry to derail OP.

[Paul the 6th]

mine used to look like that :(

+1 :razz:


I read a few other guys with SZ's on svrider forums saying that it was due to the anniversary model being in a different state of tune (5bhp more than standard svThou?) vs. euro 3 emissions = lumpyness between 5,000 and 6,000 revs when cruising on the motorway in 5th or 6th. Mine (which sold to dave preston) used to do it, and then preston complained about it as well..

If people had success adjusting TPS/balancing throttle bodies and/or fitting yoshiboxes/remapping then give it a whirl.

[paiste]

+1 :razz:


I read a few other guys with SZ's on svrider forums saying that it was due to the anniversary model being in a different state of tune (5bhp more than standard svThou?) vs. euro 3 emissions = lumpyness between 5,000 and 6,000 revs when cruising on the motorway in 5th or 6th. Mine (which sold to dave preston) used to do it, and then preston complained about it as well..

If people had success adjusting TPS/balancing throttle bodies and/or fitting yoshiboxes/remapping then give it a whirl.

Mine does it as well! Best way I can describe is it feels likes it's gonna run out of fuel :(
Have to look into the above cures! If anyone has any joy in the meantime let me know!

[rekab74]

If the sv1000 is mapped anything like the DL1000 i just got rid of then i got rid of the dreaded chudder by getting the throttle bodies balanced and the richening the idle circuit with a yoshi box by about 1% this made it absolutely spot on and removed the lumpiness.
I've had a chat with my local Suzuki dealer and they agree :cheers:

[paiste]

I've had a chat with my local Suzuki dealer and they agree :cheers:

Did you ever get this problem sorted?? Still not got around to mine yet :rolleyes: