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2000GT4.6 · 02-03-2008, 11:48 PM

The only problem with all this.... is that the company doing the selling is the one doing the dyno tests.

MM&FF, which have nothing to sell (usually anyway) have done several throttlebody/plenum shootouts with the dyno. None of them showed gains anywhere close to 10 WHP, and none of them showed gains comparing a 70 to 75MM t/b (at least not more than 1-2 WHP at best).

I made 420 WHP thru a 70mm t/b on 10 PSI.... it must not be much of a restriction, espcially on a boltons only car. My car also made 256+ WHP on stock computer tune, boltons only, with said t/b.

02-03-2008, 11:48 PM	#21
2000GT4.6 6th Gear Member Join Date: Jan 2004 Location: United States Posts: 12,575	RE: FOR ANYONE WITH THROTTLE BODY AND PLENUM QUESTONS The only problem with all this.... is that the company doing the selling is the one doing the dyno tests. MM&FF, which have nothing to sell (usually anyway) have done several throttlebody/plenum shootouts with the dyno. None of them showed gains anywhere close to 10 WHP, and none of them showed gains comparing a 70 to 75MM t/b (at least not more than 1-2 WHP at best). I made 420 WHP thru a 70mm t/b on 10 PSI.... it must not be much of a restriction, espcially on a boltons only car. My car also made 256+ WHP on stock computer tune, boltons only, with said t/b. __________________