[denis4x4]

I used to write ads for speed equipment manufacturers. Wrote an ad for headers and since it was the seventeenth of the month, I claimed that the headers were good for 17% more HP. This ad appeared in CAR CRAFT and HOT ROD. Received a letter from the feds asking for proof! To make a long story short, don’t believe any sort of HP claim that you read! One exception is Jim Brierley’s HP claims for his heads and cams!