MSD Chips

Tom Goldman · 04-09-2019, 08:17 PM

MSD rpm chips or pills are just resistors inside the casing .
Resistors come in varying degrees of accuracy or tolerance . the most common ones are 20% . with better more precise ones being 10 or 5 %.
Your difference in RPM less than 2%,which is really very good , I've sorted thru as many as 5 or 6 pills sometimes to get an exact rpm.
I'd try a 6300 chip to bring it closer to your desired 6200.
Other things that affect rpm accuracy are oxidized pins on the pill and loose sockets on the 2 step module .
Hi temperatures can cause resistance to change also . .. Something to consider when locating anything electronic.

04-09-2019, 08:17 PM	#2
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,476 Likes: 887 Liked 873 Times in 236 Posts	Re: MSD Chips MSD rpm chips or pills are just resistors inside the casing . Resistors come in varying degrees of accuracy or tolerance . the most common ones are 20% . with better more precise ones being 10 or 5 %. Your difference in RPM less than 2%,which is really very good , I've sorted thru as many as 5 or 6 pills sometimes to get an exact rpm. I'd try a 6300 chip to bring it closer to your desired 6200. Other things that affect rpm accuracy are oxidized pins on the pill and loose sockets on the 2 step module . Hi temperatures can cause resistance to change also . .. Something to consider when locating anything electronic. __________________ Tom Goldman 1500 SG , 1506 STK