Quote:
Originally Posted by Elmo370z
NA gains will be minimal with these manifolds, if you're not increasing the rev limiter with supporting mods and bumping up the compression it may not be worth the money. Some guy on here did the aam manifold on his NA set up and gains were not worth the money.
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On that same point, it probably won't be worth it on a turbo charged or supercharged motor that is not built as well. I say this because the gains with the other two manifold conversions show great low end and mid range outputs. On a stock block the oem manifold is good enough on the bottom end. My motor is at 560tq and because of that my top end on whp is limited. Seb told me it would make significantly more whp but he can't keep the tq down to do so. Adding a upper manifold at this point would not provide any real benefit other than esthetics.
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