m-max black box questions
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- Posts: 100
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- My Bike: zxr400 L racebike/R1
m-max black box questions
what exactly does it do? remove the rev-limiter on import spec bikes? used search option and from what i can find this seems to be the case. i ask as i have just acquired a job lot of zxr parts which had the h model 'idiot light' loom and a black box with M-MAX on the front (silver m) on the front and produced by m parts corporation cast into the casing on the back and some japanese above it. would this be the m-max derestrictor box? and if so what are they worth? no use to me as mines a uk spec L model
zxr400L Race Bikes Competing in EDIASIA F400 and thunderbikes with BMCRC in 2016 and an RD125LC MK1 restoration project
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- zxr400 oc member
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Re: m-max black box questions
yep, spot on, they fool the cdi (on an import) into thinking you never exceed 180kph, so the limiter isnt activated.
ive got a few of them .. probs worth about a tenner .. its only a resistor cased in resin.
ive got a few of them .. probs worth about a tenner .. its only a resistor cased in resin.
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- My Bike: Zx4 h1
Re: m-max black box questions
Do you still have any of these m max black boxs??
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Re: m-max black box questions
Cut the pink wire from the cdi, attach a 2 watt 10k ohm resistor to it and wire the other end to ground.
Job done
Job done
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said![:smt003](./images/smilies/003.gif)
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
![:smt003](./images/smilies/003.gif)
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- Posts: 13
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- My Bike: Zx4 h1
Re: m-max black box questions
What so thats it all i have to do put a resistor on it job done it takes the restrictor away??
- banner001
- Track day God
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- My Bike: ZXR400 L4
- Location: Nuneaton
Re: m-max black box questions
Correct, you wire the pink wire from the cdi to ground, with the resistor in-line
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said![:smt003](./images/smilies/003.gif)
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
![:smt003](./images/smilies/003.gif)