Forum rules
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
-
leighc
- Settled in member
- Posts: 4
- Joined: Mon Nov 03, 2008 3:41 pm
Post
by leighc » Tue Apr 14, 2009 7:55 pm
hi there,
after trying to fiddle about with the speedo on my bike at the weekend the de-restrictor wires came out of the back of the clocks, and now it is running like a complete pig. it revs cleanly to 5k but after that it feels like the engine wants to jump out of the frame, like it's running on two cylinders. I basically have a black box with a black and orange wire and no idea where to plug them back into
any help?
ta
-
wullvfr
- Site Supporter

- Posts: 1027
- Joined: Wed Apr 30, 2008 8:40 pm
- Bike owned: zx9r c1
- Location: killin,scotland
Post
by wullvfr » Tue Apr 14, 2009 10:21 pm
thats because it is running on 2 cylinders.its called the limp home mode where it cuts the spart to the rear 2 cylinders.
do the reversal of whatever it was you did

,you have maybe damaged it or made a break in the circuit or something similar.
william
please,god,....give me the chance to prove that winning the lottery won't spoil me!!!
-
leighc
- Settled in member
- Posts: 4
- Joined: Mon Nov 03, 2008 3:41 pm
Post
by leighc » Wed Apr 15, 2009 8:10 pm
-
leopard_pagan
- Senior Member
- Posts: 1184
- Joined: Thu May 01, 2008 6:42 am
- Bike owned: CBR400/600 Fighter
- Location: Mildenhall-Suffolk
-
Contact:
Post
by leopard_pagan » Wed Apr 15, 2009 8:58 pm
easy fix mate. pop a de-limiter in to the main loom and it by-passes the speed limiter thats causing your bike to run like a pig.
2 options..
free DIY instructions, you buy the parts --
or pre made kit with instructions £7.50 inc postage to UK- PM me
http://i18.photobucket.com/albums/b145/ ... odhow2.jpg" onclick="window.open(this.href);return false;
-
leighc
- Settled in member
- Posts: 4
- Joined: Mon Nov 03, 2008 3:41 pm
Post
by leighc » Thu Apr 16, 2009 7:32 pm
so are you saying the black box I have on it is now useless? I have had the bike for 3 months and up until the de-restrictor came out it was running fine. I was hoping for a " oh you need to plug it back in xxxxx underneath xxxxx," but I'm guessing it was home made so probably no standardisation with these...?
Ta,
Leigh
-
Speedy
- NWAA Supporter

- Posts: 483
- Joined: Fri May 02, 2008 8:29 pm
- Bike owned: RVF400RR, ER6n
- Location: Middx, U.K.
Post
by Speedy » Thu Apr 16, 2009 8:57 pm
Can't say if the black box is fixable or not, but you can always remove the restrictor from inside the speedo! I often wonder why people buy "magic boxes" when it's really not that difficult to DIY it! Check my guide on here:
http://www.rvf400rr.talktalk.net/articles.htm
When the mind is relaxed, the body will go faster! 
-
leopard_pagan
- Senior Member
- Posts: 1184
- Joined: Thu May 01, 2008 6:42 am
- Bike owned: CBR400/600 Fighter
- Location: Mildenhall-Suffolk
-
Contact:
Post
by leopard_pagan » Fri Apr 17, 2009 7:29 am
if its a small black box (not one of mine) like the one i bought, its "potted" sealed/water proofed and you cant get inside it.
but this does leave us with options...
inside the box will be fine. so check the wires sticking out, are they broken etc? check the pins in the plug in to main loom, then check the wiring from the pins all the way back to the ECU unit.
the kits i sell are less bulky than boxes and can be hidden easier.
cheers for the link as its confirmed that the kit can be used on a RVF as well.
-
leighc
- Settled in member
- Posts: 4
- Joined: Mon Nov 03, 2008 3:41 pm
Post
by leighc » Fri Apr 17, 2009 7:27 pm
right, i'm gonna go out and attempt the speedo thing. thanks :)