Tb and plenum
#3
RE: Tb and plenum
the guy at brothers performance said to use 70 cuz 75 would cost me some lowend torgue. I got a steal on a 3in catback so I used it and it raped my lowend. Even with the 4:10 geares it wont spin the tires. The last thing I want to do is lose more lowend. However the car has crazy high rpm hp with the 3in catback. You can really feel the diference high rpm. Dont know if the guy from brothers was right or not. I was gonna get the 75 but he talked me into the 70.
#4
RE: Tb and plenum
He's right. In a n/a setup, at or near WOT, the charge velocity drops off at lower (2000 to 3500 rpm) engine speedswitha 75mm TB. This isgenerally known among competent tuners, but flies in the face of the usual "bigger is better" conventional wisdom.[/align][/align]Accufab's flow data (click here. 1/2 way down the page) shows that the 75 mm TB addslittle to nothing, even with their very capable plenum...[/align]
#6
RE: Tb and plenum
ORIGINAL: klfutrelle
On a N/A it doesn't matter but if you plan on going the F/I route I would go ahead and get the 75mm. In this case the "bigger is better" does apply here.
On a N/A it doesn't matter but if you plan on going the F/I route I would go ahead and get the 75mm. In this case the "bigger is better" does apply here.
Thread
Thread Starter
Forum
Replies
Last Post
Gary Ugarek
4.6L (1996-2004 Modular) Mustang
8
08-26-2015 08:41 AM