jumping rpm needle

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Have you fixed it?

Hi. Just wondering if you got this fixed? I have the same problem and don't know where to start to fix it.
Any help is greatly appreciated.
I have the same issue, my problem started when I put on new heads, and intake and moved my MSD box. I have checked all electrical conections.

The RPM needle acts normal under normal acceleration. IF you jump on it, thats when I see my my problem.

gettingfaster said:
when i get on the gas the rpm gets to 3500 and its starts jumping up and down while the car runs just fine. what should i check first?