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I was perusing the Grubbs performance site and found they have a fuel/timing calibrator that's good for 5 hp max on a n/a engine. Can also help add power with a forced induction engine. Price is $650, plus you need a laptop to use it.

http://www.grubbsperformance.com
 

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that could def help make a LOT more power with a s/c kit in the hands of someone who knows what they are doing. No longer would you need to jam another injector in to compensate for more air and if it really does what it says it can you can make more power top end with the timing retard.
 
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