Factory Boost Gauge
Guest
Posts: n/a
Factory Boost Gauge
Here I am again bugging you guys about gauges...sorry but this is the last one if I can get an answer...I swear 
Reading some past theads I saw a few people mention that the Factory Boost Gauge might not be accurate. Is this for real?
Any input would be great!
Thanks again!
Reading some past theads I saw a few people mention that the Factory Boost Gauge might not be accurate. Is this for real?
Any input would be great!
Thanks again!
Registered User
iTrader: (14)
Joined: Nov 2001
Posts: 14,221
From: Peoples Republik of Kalifornia
Car Info: 05 H2 SUT, 45 GPW, 10 Murano, 13 Boss 302
I've read similar posts, but I can't tell you if that's true or not. For my STi, I ripped out the factory boost gauge because 1) it was too small to read; and 2) it blocked part of the dash. I also already had an aftermarket boost gauge from my WRX ready to go in along with EGT and Oil P so it was an easy decision.
Guest
Posts: n/a
Originally Posted by boostitup
Yeah, the stock boost gauge is worthless.
OK, can you explain? I would love to understand the reason behind it. Also good to learn
Also I was talking to a guy from "proformance desiel" I think it was and he was say that all gauges are the same, and that poor readings are because of poor install..aka leak in the line or join"
Not my opinion just another won that was expressed to me. Would love to hear what others think.
Registered User
iTrader: (7)
Joined: Dec 2002
Posts: 10,029
From: Sacramento CA
Car Info: 02 Impreza WRX sedan
The factory boost gauge is accurate enough for an unmodded STi. The main problem I have with the factory boost gauges is the restrictor bleed placed within the line to slow down gauge response so that needle movement appears to be smooth. This isn't what's really happening inside the manifold, folks! In reality, the changes in vacuum and boost are sudden and violent - crack the throttle open or closed and the needle swings right now. This becomes apparent when the vacuum hose is switched out for something bigger and leaving out the restrictor. To make the gauge useful, the restrictor can be substituted for something similar but with a bleed hole bigger than that pinhole the factory supplies.
If you've modified the boost on your STi an aftermarket gauge would be nice to have. Of course, boost should ideally be accompanied or controlled by true engine management such as the Cobb AccessPort or soon-to-be-available (I think) EcuTek reflash, not by manual boost controllers (MBC) or electronic boost controllers (EBC) which can increase boost but can't modify ignition advance mapping nor fueling in most cases.
Cappx, your questions about interior gauges have been moved to this forum because they aren't specific to the STi Powerplant.
--
0==WW==0
"…axles of evil…" - george w. bush
In reality, the changes in vacuum and boost are sudden and violent - crack the throttle open or closed and the needle swings right now. This becomes apparent when the vacuum hose is switched out for something bigger and leaving out the restrictor. To make the gauge useful, the restrictor can be substituted for something similar but with a bleed hole bigger than that pinhole the factory supplies.If you've modified the boost on your STi an aftermarket gauge would be nice to have. Of course, boost should ideally be accompanied or controlled by true engine management such as the Cobb AccessPort or soon-to-be-available (I think) EcuTek reflash, not by manual boost controllers (MBC) or electronic boost controllers (EBC) which can increase boost but can't modify ignition advance mapping nor fueling in most cases.
Cappx, your questions about interior gauges have been moved to this forum because they aren't specific to the STi Powerplant.
--
0==WW==0
"…axles of evil…" - george w. bush
Guest
Posts: n/a
Originally Posted by Wingless Wonder
The factory boost gauge is accurate enough for an unmodded STi. The main problem I have with the factory boost gauges is the restrictor bleed placed within the line to slow down gauge response so that needle movement appears to be smooth. This isn't what's really happening inside the manifold, folks! In reality, the changes in vacuum and boost are sudden and violent - crack the throttle open or closed and the needle swings right now. This becomes apparent when the vacuum hose is switched out for something bigger and leaving out the restrictor. To make the gauge useful, the restrictor can be substituted for something similar but with a bleed hole bigger than that pinhole the factory supplies.
If you've modified the boost on your STi an aftermarket gauge would be nice to have. Of course, boost should ideally be accompanied or controlled by true engine management such as the Cobb AccessPort or soon-to-be-available (I think) EcuTek reflash, not by manual boost controllers (MBC) or electronic boost controllers (EBC) which can increase boost but can't modify ignition advance mapping nor fueling in most ca
Cappx, your questions about interior gauges have been moved to this forum because they aren't specific to the STi Powerplant.
--
0==WW==0
"…axles of evil…" - george w. bush
In reality, the changes in vacuum and boost are sudden and violent - crack the throttle open or closed and the needle swings right now. This becomes apparent when the vacuum hose is switched out for something bigger and leaving out the restrictor. To make the gauge useful, the restrictor can be substituted for something similar but with a bleed hole bigger than that pinhole the factory supplies.If you've modified the boost on your STi an aftermarket gauge would be nice to have. Of course, boost should ideally be accompanied or controlled by true engine management such as the Cobb AccessPort or soon-to-be-available (I think) EcuTek reflash, not by manual boost controllers (MBC) or electronic boost controllers (EBC) which can increase boost but can't modify ignition advance mapping nor fueling in most ca
Cappx, your questions about interior gauges have been moved to this forum because they aren't specific to the STi Powerplant.
--
0==WW==0
"…axles of evil…" - george w. bush
If I am simplifying it too much just flame me
thanks
Registered User
iTrader: (7)
Joined: Dec 2002
Posts: 10,029
From: Sacramento CA
Car Info: 02 Impreza WRX sedan
No, aftermarket gauges are higher quality but I don't know if they are more accurate than the factory gauge. As long as the hose inside diameter is larger than 1/8" it should be fine. I only like the larger-than-supplied hose because it makes any gauge react more quickly to changes. If the needle movements are too abrupt, a restriction can be placed inside the hose.
--
0==WW==0
"…axles of evil…" - george w. bush
--
0==WW==0
"…axles of evil…" - george w. bush
Thread
Thread Starter
Forum
Replies
Last Post
cdawg
NorCal Classifieds
0
Jan 4, 2008 03:44 PM
WRXLR8R
Interior, Exterior & Lighting
14
Aug 27, 2003 12:59 AM
mattr762
Engine/Power - EJ20T (pre-2006 WRX and JDM)
6
Apr 18, 2003 09:12 AM