Manifold Boost Pressure Source?

RetroGamerJP · 12-30-2007, 11:33 AM

Does anyone know of a vac/boost line I can tap that will read the manifold pressure as opposed to the intake pipe pressure (where diverters are)

I want to get an accurate boost pressure reading that will not be affected by the momentary spike that occurs in the intake pipe after the throttle body closes.

thanks in advance.

O-cha · 12-30-2007, 11:34 AM

The line to the DV is from the manifold

Mr. 5 · 12-30-2007, 12:25 PM

Quote:

Originally Posted by O-cha

The line to the DV is from the manifold

That's what I use for my dynos.

BoostedBMW · 12-30-2007, 02:15 PM

I use the DV vac source also for my boost gauge and I've never once seen a spike after the throttle body closes. I think that the DV vac line can be routed back to the top of the throttlebody, so I think its coming from the intake manifold.

12-30-2007, 11:33 AM	#1
RetroGamerJP First Lieutenant 50 Rep 390 Posts Drives: 2019 M4 Join Date: Sep 2006 Location: Atlanta GA iTrader: (3)	Manifold Boost Pressure Source? Does anyone know of a vac/boost line I can tap that will read the manifold pressure as opposed to the intake pipe pressure (where diverters are) I want to get an accurate boost pressure reading that will not be affected by the momentary spike that occurs in the intake pipe after the throttle body closes. thanks in advance.
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12-30-2007, 11:34 AM	#2
O-cha Brigadier General 218 Rep 4,726 Posts Drives: Mcoupe Join Date: Oct 2007 Location: In front of you iTrader: (2)	The line to the DV is from the manifold __________________
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12-30-2007, 02:15 PM	#4
BoostedBMW Moderator 132 Rep 6,775 Posts Drives: TiAg E92 335 Join Date: Oct 2006 Location: Raleigh, NC iTrader: (14) Garage List 2003 S2000 [0.00]	I use the DV vac source also for my boost gauge and I've never once seen a spike after the throttle body closes. I think that the DV vac line can be routed back to the top of the throttlebody, so I think its coming from the intake manifold. __________________ -Michael. Berlina Black S2000 CR is now in the garage l 19" Rial Daytona Race l KW V2 l Eisenhaus Race Exhaust l
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