Our friend Johnny drove in from Massachusetts to upgrade from Blue to Purple Belt. Even with catted downpipes, we were able to hit 602 whp and 632 wtq. Notice the big power drop-off above 6,000 rpm. This is a classic sign of weak valve springs on this 89,000 mile engine. We went ahead and reduced Johnny’s rev limiter and shift points for now to help keep things as safe as possible. He will be planning to upgrade the valve springs on this car in the future.
If you’re looking for some more kick like Johnny was, check out TapoutTuning.com for parts and information on our services!
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