10.
Despite receiving all of these modifications, our Triumph’s max horsepower remained the same. Was the session a bust? Hardly. What was previously an unhappy little car now hums along smoothly.
A QUICK 5 HORSEPOWER
During our initial testing, we ran our Triumph TR6 with and without the stock air-cleaner assembly. Wow, what a difference: The stock air cleaner was costing us 6 horsepower. Since you really shouldn’t drive around without an air cleaner, we ordered some simple foam sock-type air cleaners from The Winner’s Circle. They may not have the look of the original air cleaner, but some follow-up dyno work showed they only cost us 1 horsepower. We could live with that.