by BlakeNZ » Sun Feb 03, 2008 11:19 am
don't do it! there is a BMW race car in australia that has the unusual combination of a 1jzgte installed with asupergharger(no turbos) and they felt the 1jz manifold was hindering them, so cut the plenum off,and welded the top part of a 7M plenum onto the 1jz runners and got a really good gain. I was surprised to read that. it seems there isn't much wrong with the 7M intake plenum.
former car 1991 JZZ30 soarer 1JZGTE 11.5sec@122mph(stock turbos,E85)
current car 1993 JZZ30 soarer (Golden Boy)