well in the spirit of pure speculation on the headers in this thread, lets do a hypothetical... If rt average tune on a bolt on car with no m370 and no headers is lets say 318(just averaging what they posted on their dyno vids) and I add 10 hp to mine, I would have been at lets say 332, so the headers would have gained on average 14 hp....I would say that is a safe estimate....and my gains after the dip on my graph are quite good IMO.
|