| Re: New TB, Hopefully more HP |
Subject: Re: New TB, Hopefully more HP by AKS_Racing on 2009/1/23 2:50:33 Let me throw a bit of fuel on this fire... I am one of the many who have had problems with the AS&M MB. Plain and simple, the butterflys want to stay open when under WOT and serious load. This is a very bad situation in a boosted car, and there are numerous examples across the internet of this exact same issue. I actually have two AS&M MBs, and they both do the same. One now has additional spring wraps to allow the throttle to return (I was using an external spring, but this route is cleaner). If you get the MB past center open, they will close, it is just a matter of getting it back from full open (quite scary when I was first doing the tune). Both MBs have been sent back to AS&M with each re-aligned and properly set-up, but even AS&M acknowledges the issue. I also run more IAC than I would with the twin 58MM to aid in idle quality. As a side note, I ran back to back on the Mustang dyno with the MB, then the billet twin 58MM, and there was less than 0.3% (3 tenths of 1%) difference between the two. This is on a car that was producing right at 825WHP on the Mustang dyno. I chalk that up to meaasurement error. BTW, your intake / MB combo looks familiar... [IMG]http://i55.photobucket.com/albums/g151/AKS_Racing/100_0118.jpg[/IMG] Aaron |
