04 Joe Gibbs Performance Silverado need help with tune Jet Dynamic Spectrum Tunner
09-13-2015, 04:29 AM
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04 Joe Gibbs Performance Silverado need help with tune Jet Dynamic Spectrum Tunner I got a 2004 Joe Gibbs performance Silverado truck. It has a magnacharger from Gm. It has 70,000 miles on it... I just change the SUPERCHARGER pulley from the stock 3.60 to a dub 3.20. I need help to tune it. At 3500 rpm you can here valves chatter till 4500rpm. I'm using the Jet Dynamic spectrum tuner. I also what to change shift point and make it shift hard. CAN ANYONE HELP??
09-14-2015, 11:43 AM
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I would put the 3.6 back on there until you can take it to a tuner that has HPTuners. That's not the valves chattering. You are going to break some ring lands if you don't stay off the gas. I don't know what a Jet tuner is?
03-30-2016, 11:14 PM
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[QUOTE=Bigdawgmichael;18963326]I got a 2004 Joe Gibbs performance Silverado truck. It has a magnacharger from Gm. It has 70,000 miles on it... I just change the SUPERCHARGER pulley from the stock 3.60 to a dub 3.20. I need help to tune it. At 3500 rpm you can here valves chatter till 4500rpm. I'm using the Jet Dynamic spectrum tuner. I also what to change shift point and make it shift hard. CAN ANYONE HELP??[/QUOTE