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Author: Subject: Resister
piddy

posted on 12/1/07 at 04:07 PM Reply With Quote
Resister

I brought a LC-1 from Bill and recieved it today.

When on the phone to him he said that I would need to install a resister inline when using with a Mega squirt.

What size do I need and where is the best place to get one?

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GeoffT

posted on 12/1/07 at 05:00 PM Reply With Quote
I read (can't remember where!) that only the earlier LC-1's needed this resistor, and the current ones don't. Haven't fitted one to mine with no ill effects so far.
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cossiebri

posted on 12/1/07 at 07:57 PM Reply With Quote
When you know what size you require, Try Maplin's









If it doesn't fit MODIFY it!!
Cheers BriF

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GeoffT

posted on 12/1/07 at 08:33 PM Reply With Quote
Copied from the DIYautotune website :-

Here are the two things you'll want to cover that AREN'T mentioned in the QuickStart guide:

Ground the LC-1 and the MegaSquirt together. This is to prevent a voltage differential and will ensure accurate readings.
THIS STEP IS ONLY ON LC-1'S IN THE YELLOW/BEIGE BOXES, NOT THE BLUEBOX LC-1'S: Use a 470 ohm, 1/4watt resistor in between the analog output of the LC-1, and the o2 input of the MegaSquirt. So you'll wire the analog output from the LC-1 to one side of the resistor, and then you'll wire the MegaSquirt 02 input to the other side of the resistor, forcing the signal to pass through it.
Blue Box LC-1's (started shipping around mid-June '06) have an updated DAC that does not require the 470 ohm resistor when used with MegaSquirt. Another way to identify if you have an LC-1 with the updated DAC is the serial number for the LC-1s with the DAC update are LC11188 and above and all LC-1s with a serial number that start with CLC.

Geoff.

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stevebubs

posted on 12/1/07 at 09:07 PM Reply With Quote
If unsure, you can drop Bill a text on 077884 32735 and ask directly...
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