has anyone had a go at putting a programmable cdi together for a 21 ?

HRC have given it a whirl

The fact you can get over 70+ hp on a stocker means there isnt much need though.
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If I have to take the carbs off once more...

Have you seen the http://www.ignitech.cz website - there is some interest on the RGV forum in this
http://www.ignitech.cz/english/dccdip2/dccdip2.htm

TPS, Powervalve controller, shift light and electronic powerjet control, all programmable for £100. You wouldn't get your pencil out to start designing your own at that price. I might get one when I have the money.

If you must design and build your own, see
http://www-staff.lboro.ac.uk/~elvpc/progs/progs.html and scroll down to DDIS which is a good start.
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NSRless again...


Last edited by vincbr900 on Mon Aug 13, 2007 11:05 am; edited 2 times in total

thanks mate looks good

you can reprogram the rcvalve controler on the mc16 i know that i havent looked at the cdi's but they might be the same :S
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Honda nc23 CBR400 AERO 1986, 1990 honda NC23 Tri-Arm, 1987VFR400 NC24 Rothmans Rep, NSR250 MC16 1987, CL250s 1983. Moto guzzi zigolo 110cc 1958. Fantic 50cc 1972. Suzuki Cobra Race bike 500cc 2t 1975 , GP125 1975. Triumph T110 1954. BSA Thunderbird 1955. Ariel VB 600 1952, 1990 MuZ 125 etz.

is there a web page about teh insides of the MC16 controllers or how to reprogram them?
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NSRless again...

It’s a standard chip that’s used in lots of electrical equipment. I'll post a picture later when i get to my computer. My mates an electrical enthusiast and I took it to him and he read the info on the chip and played with it on the computer.

He also copy’s and reprograms the sealed units and builds his own custom ones. I think there is a previous topic on how to take them apart.
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Honda nc23 CBR400 AERO 1986, 1990 honda NC23 Tri-Arm, 1987VFR400 NC24 Rothmans Rep, NSR250 MC16 1987, CL250s 1983. Moto guzzi zigolo 110cc 1958. Fantic 50cc 1972. Suzuki Cobra Race bike 500cc 2t 1975 , GP125 1975. Triumph T110 1954. BSA Thunderbird 1955. Ariel VB 600 1952, 1990 MuZ 125 etz.

not sure about reprogramming one from what i know thay fuse them at the factory by sending a voltage up one of the ic,s legs

i'll ask him tonight how he done it i know he took the chip and copied it. he may have used a different chip when he put it back. there where bits of an old spectrum used at some point :/

The chips a standard chip used from the late 70's he told me or somthing.

He builds custom amplifiers for gigs btw and upgrades standard audio equipment so he knows more than me.
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Honda nc23 CBR400 AERO 1986, 1990 honda NC23 Tri-Arm, 1987VFR400 NC24 Rothmans Rep, NSR250 MC16 1987, CL250s 1983. Moto guzzi zigolo 110cc 1958. Fantic 50cc 1972. Suzuki Cobra Race bike 500cc 2t 1975 , GP125 1975. Triumph T110 1954. BSA Thunderbird 1955. Ariel VB 600 1952, 1990 MuZ 125 etz.

ah yes the good old 8-bit zilog 80 thinking back it will be most likey be a eprom (before the days of pic,s) that hes using if thay have not been fused just put under ultraviolet light for a few mins wipes them clean !

Im going to look at the CDI's tomorrow to see if he thinks its playable aswell.

He made me a CDI unit for my Honda gorilla as the ignition had no advance retard and i get much better response from her now and the top speed goes from 50mph to 65mph with a decent exhaust and carb.
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Honda nc23 CBR400 AERO 1986, 1990 honda NC23 Tri-Arm, 1987VFR400 NC24 Rothmans Rep, NSR250 MC16 1987, CL250s 1983. Moto guzzi zigolo 110cc 1958. Fantic 50cc 1972. Suzuki Cobra Race bike 500cc 2t 1975 , GP125 1975. Triumph T110 1954. BSA Thunderbird 1955. Ariel VB 600 1952, 1990 MuZ 125 etz.