Quote:
Originally Posted by witthuus
- thank you. That answers my question and I will not spend a penny on these chips
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Aerodynamics don't make much difference at speeds of 55 mph or less but weight does. Cat Performance tables show a 4,200 lb car requires 25 wheel hp @ 65 mph; where as, a 24,000lb coach requires 90 hp @ 65 mph and a 40,000 lb coach 160 hp