Quote:
Originally Posted by hobieboy
Perhaps a little off topic but I'm curious...
Would a larger diameter header (say from the standard 1 5/8" to 1 3/4") help to reduce the backpressure? Or is it something else?
thanks!
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Majority of backpressure comes from the fact that exhaust gases must pass trough lot's of little blades which are "braked" by big fan which pumps the air into engine. Header and exhaust contribute only slightly...
Too big headers would probably only increase the lag as you would loose pulse energy in exhaust gases and only feed turbo with pressure delta.