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Subject I had a similar issue a couple years ago.
     
Posted by spdrmn15 on August 25, 2015 at 4:11 PM
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In Reply To A little cleanup goes a long way.... posted by Slow3z on August 23, 2015 at 05:39 PM
     
Message Around 5k rpm the car would jerk like it hit a wall, and if I lifted then got back on the throttle it'd be fine to redline. When it first started it was very "gentle", but after a couple more pulls on the dyno it got worse and worse. It went away when I swapped out the cas. I changed nothing but the cas, and the issue went away instantly.

"Face it, you just can't beat stupid."
"Never underestimate the power of stupid people in large groups"
"My favorite glue is Hopes and Dreams. "
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