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by franken7
Sat Feb 13, 2010 8:54 am
Forum: Tuning Fuel and Air
Topic: Rotary -rpm's reading too high
Replies: 1
Views: 171

Rotary -rpm's reading too high

I have an MS1 w/ v3 board installed on an 85 rx7 with an SE 13b. The rpm's that are read on megatune are about 1k rpm higher than what the tach shows. I have tried both the leading and trailing coils with the same result on each. I'm wondering if rpm spikes are causing this or if there is something ...