Quote:
Originally Posted by DJCarbine
I have the same issue randomly as well. During a shift while in boost, the timing gets pulled and I notice a split second decrease in power along with an exhaust note change that sounds like really retarded ignition (only lasts less than half a second), I always thought it was just the normal transition from boost to vacuum to instant boost again, I figured it was just tip-in spark retard to prevent detonation.... maybe one of the tuners can chime in
If I shift and feather the throttle to roll into boost more smoothly, the ignition retard does not happen.
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I've had this same issue on my completely stock engine with just a drop in filter. I don't think it's a vortech or tune issue. I hadn't seen any mention of someone else experiencing it until now.
I will say it became more pronounced for me when I put an exhaust on the car. But I have since removed it and the issue has lessened.
When I shift gears foot on the gas again I get a slight hesitation (you could hear the exhaust not change when I hate the exhaust installed) then all is well.