m-max black box questions

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alanh
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My Bike: zxr400 L racebike/R1

m-max black box questions

Post by alanh »

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
zimm
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Re: m-max black box questions

Post by zimm »

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.
Zx4 h1
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Re: m-max black box questions

Post by Zx4 h1 »

Do you still have any of these m max black boxs??
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banner001
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Re: m-max black box questions

Post by banner001 »

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
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
Zx4 h1
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Re: m-max black box questions

Post by Zx4 h1 »

What so thats it all i have to do put a resistor on it job done it takes the restrictor away??
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banner001
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Re: m-max black box questions

Post by banner001 »

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
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