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At about 70kph(43mph) in 4th gear while cruzin' I notice some hesitation. If I accelerate past 70 it disappears. Its almost like a stutter being caused by a lack of fuel or something. I have an AEM CAI, FC TB, JG Header, Stage 3 cams, AEM Cam Gears, & Wires. Any one have the same problems or any thoughts.
 

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i what RPMs? does it happen in all gears? apx what ammount of throttle are you giving it?

Possible problems based on your mods

1. Cam timing off
2. Cat is starting to collapse or has already collapsed

if you can give out a little more info we maybe able to pin point it. Oh yeah did your ECU throw a CEL?
 
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