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#1
03-24-2004, 08:40 PM
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Inaccurate RPM reading
Has anyone seen this before, I just recently replaced my computer and chip (Hypertech). Now i noticed my RPM's way off the charts. Idle's around 1,250. (Normal) but noticed when i kicked it down it was up around 7-8K when i was jumpin on the highway. Now this is a stock motor so there is no way this is accurate.
Plus when it is rev'd up a tade, reads 4K ( for an example ) but sounds as if its 2K. Hardly even stroken. Other then that the car runs excellent 
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#2
03-24-2004, 08:54 PM
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Re: Inaccurate RPM reading
probably the computer or the chip then. the rpms are read from the coil, but I don't believe that would be the problem. Where did you get your computer and chip at? I'd see if you could exchange them.
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#3
03-24-2004, 09:03 PM
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Dont think its neither, ran the stock chip untill my hypertech came in and was the same. Besides since i have replaced the computer alone,(previous issue) the car runs better then it ever has and better yet with Hypertech chip, only complaints i have is pumping 93+ oc fuel wich can hinder the wallet but has the same millage. Baiscly very happy with the performance, just thought it was odd seeing the RPM's off.
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#5
03-24-2004, 09:16 PM
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Honestly, didnt notice it untill the other day, But when i was having issues with idle/richness before i replaced the ECM is when i noticed the RPM's reading higher then what they really where. Now the idle is normal but when kicked down there in accurate. Was thinking switching over to a higher spark coil. It still seems to ping with 93 oct.
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