Yeah about 20 years ago,my first turbo combo Pontiac engine,in a little 2500lb car ,totally mismatched suspension/converter/cam/turbo selection,it used to launch like a stunned slug with no boost at all 'til about 3500 rpm then at 3501 rpm it instantly had 15psi of boost! It caught me out one time when I reached over to switch on the water injection(I'd forgot to turn it on) just as the boost came in and I did a full 360 spin backwards into the guardrail. My mates nicknamed the car Armcosurfer after that.
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