2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

VDI opening RPM

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Old Oct 8, 2008 | 01:00 PM
  #1  
Rx7TyreBurna's Avatar
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VDI opening RPM

My VDI is opening at between 5200 and 5400. Is this too early? It used to open at 6000, but that seemed late. I would feel power dropping off from 5k to 6k, then pick back up.

Maybe only a dyno can tell? I am hitting the dyno when my megasquirt comes in.
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Old Oct 8, 2008 | 01:07 PM
  #2  
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From: Rohnert Park CA
5200 is the stock spec for opening.

If it was opening at 5400 or 6000 then the valve is probably gummed up and needs cleaning.
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Old Oct 8, 2008 | 02:26 PM
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Oh, it wasn't set correctly on my RPM switch.

Currently have Aux opening at 3800 and VDI anywhere between 5200 and 5400. Hard to tell. Trying to keep eyes on the road when I see the LED come on, comparing it to my SAFC tach reading, because stock tach is about 400 RPM off.
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