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 The e23 745i and Turbocharged BMW Motor Topics
 BMW M106/M102/M30 Turbo Topics
 which 'chip' to use
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cliffo
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Posted - May 14 2002 :  20:37:34  Show Profile  Reply with Quote
is it possible to get some more info on the types of replacement chips you guys in the states are able to get hold of. the name steve c is mentioned on some of the posts. any info on him and his chips? my tuning guys (avoturbo.com) have suggested a 'link intercept' tuning device that fits between afm and motronic that can take over all aspects of fuel/ignition, allowing higher boost/more fun. the overboost device would have to be fooled, as this can still interfere.

Jon 86 745 MS
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1423 Posts

Posted - May 14 2002 :  20:48:20  Show Profile  Reply with Quote
I am not going to toot our own horn (shameless plug) but check out our site www.745i.com

The device you are talking about is a good tuning device but will not change the Fuel mapping or, timing or the boost correction problem.

Jon Jacobs
86 745i (Die Rakete)
16 psi+ Boost with
Team WWW.745i.com Performance Parts
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cliffo
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Posted - May 14 2002 :  21:10:25  Show Profile  Reply with Quote
can your chip be fitted by a technician here in melbourne, or is it recommended to send it to your team at745i.com.

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Jon 86 745 MS
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Posted - May 15 2002 :  06:23:24  Show Profile  Reply with Quote
A good tech who can solder should have no problem. The soldering is to provide a socket to install the chip. If you have one of the newer Motronics with the 32 or 64 bit chip then the mod is not nececssary.

You can send it to us but that would cause quite a delay. If you can do it I would just buy the upgrade and install it yourself.

Jon Jacobs
86 745i (Die Rakete)
16 psi+ Boost with
Team WWW.745i.com Performance Parts
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clawson3
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11 Posts

Posted - May 20 2002 :  13:14:28  Show Profile  Reply with Quote
Get the chip from the 745iTeam. It is awesome. No problems, great power increase. You won't be disappointed. Had mine for week now.

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cliffo
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768 Posts

Posted - May 20 2002 :  19:44:21  Show Profile  Reply with Quote
jon, i pulled the motronic out of the car and have got all the details. on the cover of the unit is the code 0 261 200 013. inside,its a single eprom S720 chip with its own socket. the code(on a sticker on top of chip) on the eprom is126755146( the 46 is in smaller script than the preceding nos.).on the actual chip there are two lines ofnumbers.first line LD2764A45 . second line U5083206S .the pcb version no on the side of the circuit board is SR FD12.85 .the pcb codes written on the circuit board are as follows- 1 268 329 067 2V .also- 1 268 311 067 .hopefully thats all you need to identify the correct chip. thankyou jon, looking forward to your reply.

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Jon 86 745 MS
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Posted - May 20 2002 :  19:58:15  Show Profile  Reply with Quote
Cliff, you have the single chip 64 bit version of the Motronic for your 745. It appears that it was made in December of 85. Please post your last 7 digits of your VIN and I can confirm the cars exact date of MFG.

This Motronic requires NO MODIFICATION as it is ready to accept the upgraded chip. With just the chip and FMU you can run up to 10 psi of boost by just pulling the wastegate hose. But as Victor can tell you it is best to go the whole distance if you can. The wastegate mod and boost controller will really make your car come alive.

Not pushing all of the mods as the amount of gain from just the chip and the FMU are nothing to sneeze at.

Jon Jacobs
86 745i (Die Rakete)
16 psi+ Boost with
Team WWW.745i.com Performance Parts
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cliffo
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768 Posts

Posted - May 20 2002 :  21:31:20  Show Profile  Reply with Quote
jon, im smiling now! as i went to open the box i was in a bit of a sweat not knowing what to expect. i cant supply you with a vin number as the donor car was dismantled at the bmw repairers workshop. he said it was an '86 model, which was probably the year of first registration, so the pcb numbers of '85 would make sense. ok, now for the fun part. where and how do i get hold of the chip. a mate of mine is going to the states on business, which would avoid having to post it.any suggestions? would posting do any damage to the chip- ie-x-rays etc.

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Jon 86 745 MS
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Posted - May 21 2002 :  05:12:20  Show Profile  Reply with Quote
Should not hurt it. Where in the states is your friend coming to? We can do PayPal or you can send us a Money order through the mail. Let me know how you want to do it. I will help you any way I can.

Jon Jacobs
86 745i (Die Rakete)
16 psi+ Boost with
Team WWW.745i.com Performance Parts
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cliffo
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768 Posts

Posted - May 21 2002 :  05:24:19  Show Profile  Reply with Quote
thanks jon. i'll ask roger when/how/where etc.etc and get back to you. i've also got a mate with an import export business. we could do it through an agent of his in the states. what do you think?

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Jon 86 745 MS
Over 745 Posts!

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Posted - May 21 2002 :  16:54:09  Show Profile  Reply with Quote
If you want just the chip it would not be a problem just to mail it. If you decide to mail the wastegate for upgrading it might me better to use an agent for tracking and insurance reasons. Anew wastegate is about $500.00 US and would be a shock if lost.



Jon Jacobs
86 745i (Die Rakete)
16 psi+ Boost with
Team WWW.745i.com Performance Parts
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