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Anybody have or had any experience with a jms chip. I am thinking about getting one . ie; so i can fix my speedo but would like some feedback first.?
 

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I would recommend JMS chips. His (Chris Johnson) shop is 45 minutes from my house so I get to take my car to his shop to get tuned. He tuned my car to idle and drive like stock with the stock mass air meter.
 

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The BarTender
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Very bad experience with them on my end. If you would like the details then feel free to PM me.

Razor.
 

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He is the man , stock longblock tuned to 603 rwhp/499rwtqVortech S-trim,3.125 pulley
 
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