You are correct in that it is a performance upgrade, but it add to efficiency of your build. I have gotten over the chatter as it's only from a dead stop that it is noticeable. The Z is a noisy car period so with every suspension or driveline upgrade comes a new and different noise. Speaking of noise, if you didn't do your rear diff bushing I would suggest that you do that as well to get rid of wheel under hard acceleration. Lol, once you start down the road of being boosted it becomes like a boat...bring on another thousand.
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