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04-09-2019, 05:19 PM | #1 |
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MSD Chips
anybody have trouble with the msd chips being off of what they are suppose to be ? 6200 chip for two step but only goes to 6125. I have heard there is somebody out there that makes a more accurate chip-who?
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04-09-2019, 08:17 PM | #2 |
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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.
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04-09-2019, 10:09 PM | #3 |
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Re: MSD Chips
thanks for the imput
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04-10-2019, 05:31 PM | #4 |
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Re: MSD Chips
You know, it could be your tach that is off.....
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04-10-2019, 07:01 PM | #5 |
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Re: MSD Chips
basing it off onboard data logger readings
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04-12-2019, 03:38 PM | #6 |
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Re: MSD Chips
I've noticed the same thing, that they generally activate at lower rpm than rated. You could check out the MSD 89952 RPM Chip Tester, or this list of rpm chips and their corresponding resistance values. I found this somewhere online so take it for what it's worth.
MSD RPM Chips RPM Ohms 2000 1152 2100 1224 2200 1297 2300 1370 2400 1444 2500 1518 2600 1592 2700 1668 2800 1744 2900 1820 3000 1896 3100 1978 3200 2049 3300 2132 3400 2215 3500 2288 3600 2373 3700 2460 3800 2534 3900 2622 4000 2710 4100 2787 4200 2877 4300 2969 4400 3048 4500 3141 4600 3235 4700 3316 4800 3412 4900 3509 5000 3592 5100 3691 5200 3791 5300 3877 5400 3979 5500 4082 5600 4171 5700 4277 5800 4383 5900 4475 6000 4584 6100 4693 6200 4788 6300 4901 6400 5014 6500 5112 6600 5232 6700 5349 6800 5449 6900 5569 7000 5689 7100 5793 7200 5919 7300 6043 7400 6150 7500 6277 7600 6406 7700 6517 7800 6649 7900 6782 8000 6897 8100 7034 8200 7171 8300 7291 8400 7432 8500 7575 8600 7699 8700 7845 8800 7994 8900 8122 9000 8274 9100 8428 9200 8561 9300 8719 9400 8879 9500 9018 9600 9182 9700 9348 9800 9491 9900 9662 10000 9834 Last edited by 340 Six Pack; 04-12-2019 at 03:45 PM. |
04-14-2019, 02:54 PM | #7 |
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Re: MSD Chips
I use the Tom Goldman theory.. and my RacePak says that it works for me.. and I'd rather be a weeeeee bit high, than low... just sayin'..
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04-14-2019, 03:01 PM | #8 |
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Re: MSD Chips
Is this a new item or discontinued? I see it on the parts vendor sites but find zero mention of it on the MSD site. Is the tester accurate when compared with how an individual chip functions in actual use? Anyone using an MSD 8998 for the same purposes?
Last edited by CMcAllister; 04-14-2019 at 03:08 PM. |
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04-16-2019, 04:03 PM | #9 |
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Re: MSD Chips
I use the adjustable modules instead of the chips. The ones I have are right on the money +- a small amount. If your chip rpm is real close to what the stall rating on your converter then it could vary more due to weather conditions that effect HP and the actual stall speed of the converter. I am usually chipped at least 1000RPM below the stall speed of the converter. I adjust up and down on the RPM to get my reaction time where I want it to be. The chip RPM makes almost no difference in ET through out a 600-800 RPM range.
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