First I would say run a bit more boost. Regap your plugs or just replace them. You could also be running really rich and loosing some power.Sorry to say it could have been your driving.. Or just you just lost traction all the way. However you trap speed seems to indicates that you aren't making the power you should be.. I say take your car to a dyno shop and do a couple runs see what your power is really like. Also I don't see any down pipes or test pipes in your profile. I am sure you have them but if you don't that would be something to definetly get.

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