MSD Cap and Rotor

**SSlowBoat** · 04-18-2017, 12:22 PM

Originally Posted by Spartan7

So, has there been any general consensus on what the issue is with these aftermarket optis? Is it cheap optical sensors, irregularities in the high res reluctor slots, combination of the two?

guessing cheap optical sensors that get stupid when heat soaked. if I had a bench harness I'd run the opti with a drill while using a heat gun to heat it up and see if it does it.

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**96z28SideSwype** · 04-18-2017, 04:31 PM

We are just waiting on Ben to see if it we took care of the issues even though it should since once we got his opti we were able to duplicate the issue you emailed me about.

**Injuneer** · 04-18-2017, 09:52 PM

Seems to me the problem might be related to a change in the optical module specs or sourcing in the past 2 years. Or there is some sort of high voltage interference with the module, due to a change in the materials in the body.... maybe the dielectric epoxy on the cap. The problem is popping up enough now that other people are reading their own data logs and finding the erratic signals. It was never an issue in the past, at least not on this scale.

**Spartan7** · 04-19-2017, 11:34 PM

I agree, I even had a parts store opti last me nearly 30k miles that I bought 10 years ago. I now run a GM base with a Mitsubishi sensor, and I'd really like to source an extra (probably from the junkyard) for the future.

**zeNlPrec** · 04-24-2017, 09:31 PM

I also had erratic RPM spikes with a brand new MSD Opti on my vehicle when I bought it. Replaced it with a Skip White opti and ran fine. Will be switching to a OEM opti once new engine goes in.

**captainofiron** · 06-14-2017, 03:20 PM

Curious if there was any resolution to this issue given the issues I am currently having with my MSD opti

**Stormyweather** · 06-14-2017, 05:06 PM

What was the problem with the Accel Opti? Or was there

It's not how fast you mow. It's how you mow fast.

**SSlowBoat** · 06-14-2017, 06:59 PM

Originally Posted by Stormyweather

What was the problem with the Accel Opti? Or was there

It's not how fast you mow. It's how you mow fast.

accells are usually garbage. I have one brand new that was doa sitting in the box still. code 16 second I tried to start car

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**Injuneer** · 06-19-2017, 11:17 AM

Originally Posted by captainofiron

Curious if there was any resolution to this issue given the issues I am currently having with my MSD opti

No feedback at all from MSD. Disappointing. Kinda thought we were doing them a favor by returning the defective unit, and the data logs showing the problem. Guess not.