HV3 High Velocity intake insert

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Originally Posted by nicksilvergt99

You didn't feel a big difference? Well damn the hv3 is supposed to be THE mod for a gt (and a tune) but anyways..I guess I'm 19362063963% sure I'm top swapping then lol

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I also have to take it apart again to get the PCV tube out I don't know what I was thinking :th_angry-censored: it may be disrupting the air flow idk check out link below if you zoom in you can see the tube middle intake hole on bottom.


2001 Pontiac Grand Prix GT :: HV3 High Velocity Insert picture by KERKER48 - Photobucket

Get rid of the U bend next.
You have to be able to get rid of the air put in, not put more air in it.

Wow...a knocking GT probably...you can't bring in more air the engine can't get rid of first. Typical car rule. Let it breathe before shoving more air in. 3" Downpipe, Front Powerlog. Or take your HV3 back out because it probably isn't helping much with no exhaust mods.