Fitted boost gauge and
11 February 2009, 03:52 PM
#1
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Fitted boost gauge and
fitted boost gauge thanks to you guys help finding right pipe to connect to and on idle it is reading -1 bar the needle is at the backstop on the gauge and when driving hard it peaks at 1.5 bar is this all correct does it sound right any comments would be helpful as i need to know my gauge is working right
P.S the car is a 95 wrx import hks filter no other power mods as far as i know
cheers guys now i need to wire up back light
so will be taking piccys of my electrics and the back of gauge for help so if any one wants piccys to help me please either pm or give e mail address
jacqui
P.S the car is a 95 wrx import hks filter no other power mods as far as i know
cheers guys now i need to wire up back light
so will be taking piccys of my electrics and the back of gauge for help so if any one wants piccys to help me please either pm or give e mail address
jacqui
11 February 2009, 04:04 PM
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what should it hit then please help need a guide as to what is right and wrong and anything i may have done wrong
i used the small diameter pipe that came with gauge and plumbed it into bigger pipe same diameter as what i used with the T peice and used vacum hose in middle of the three on top of inlet manifold
why is it hitting so high
i used the small diameter pipe that came with gauge and plumbed it into bigger pipe same diameter as what i used with the T peice and used vacum hose in middle of the three on top of inlet manifold
why is it hitting so high
11 February 2009, 05:41 PM
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right help still needed am i reading my gauge right ?needle on idle is at -1 bar and right back as far as it will go to the stop
normal running about in the car sees needle go past zero to 0.5 bar
bit faster needle hits about 1 bar
full on needle goes to 1.3 bar when pushing hard
normal running about in the car sees needle go past zero to 0.5 bar
bit faster needle hits about 1 bar
full on needle goes to 1.3 bar when pushing hard
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11 February 2009, 06:28 PM
#9
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so according to info blackwrx has given i should be hitting fuel cut and i arent so is my gauge fooooked will go for drive later tonight and update on stuff i have checked my pipe work and there is no kinks or anything i am stuck as what to think
jacqui
jacqui
11 February 2009, 07:00 PM
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Right just been out with a mate in car so he could read gauge it is holding 1.3 in 5th gear foot down and upto 1.3 in every gear this car is fooking fast still restricted tho
checked all hoses they all good no kinks or leaks have only owned car 2 week fresh import with lots of goodies on it but unsure wheather power increase apart from hks mushroom filter as said before i know it is z4 ecu as looked today and td05 turbo
no fuel cut at all goes like a train
other mods i know of and which arent power related
ohlins ajustable suspension all round
front /rear strut braces ally
sti interia
brake master cylinder brace
four pot brakes
carbon spoiler
4 brand new potenza tyres
full underseal
momo steering wheel
large bore exhaust but dont know if de cat
checked all hoses they all good no kinks or leaks have only owned car 2 week fresh import with lots of goodies on it but unsure wheather power increase apart from hks mushroom filter as said before i know it is z4 ecu as looked today and td05 turbo
no fuel cut at all goes like a train
other mods i know of and which arent power related
ohlins ajustable suspension all round
front /rear strut braces ally
sti interia
brake master cylinder brace
four pot brakes
carbon spoiler
4 brand new potenza tyres
full underseal
momo steering wheel
large bore exhaust but dont know if de cat
11 February 2009, 07:32 PM
#14
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I've just fitted a boost gauge too, mine peaks when I give it the beans at 23 psi, I've fitted my vacume pipe to the 1/2" pipe at the top of my dump valve, I think that's why I'm getting such high readings. My engine is pretty standard.
I'm gonna move it from the dump valve to one of the smaller gauge pipes at the inlet.
I'm gonna move it from the dump valve to one of the smaller gauge pipes at the inlet.
11 February 2009, 07:53 PM
#15
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right help still needed am i reading my gauge right ?needle on idle is at -1 bar and right back as far as it will go to the stop
normal running about in the car sees needle go past zero to 0.5 bar
bit faster needle hits about 1 bar
full on needle goes to 1.3 bar when pushing hard
normal running about in the car sees needle go past zero to 0.5 bar
bit faster needle hits about 1 bar
full on needle goes to 1.3 bar when pushing hard
My boost gauge reads -2 bar so it idles at about -1 bar. Thats why yours is touching the stop. (Not a problem) As for the rest of the readings they sound OK.
Forget the fuel cut thing, if the car runs fine you are not getting it.
Rgds Red.
11 February 2009, 08:06 PM
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LOL know what you mean, I've already had to have engine replaced once, I daren't boot it, though if I do it seems to go like **** off a shovel with no problems. So perhaps red rocket is right. Bloody scoobies, do my head inn, but I still love em
11 February 2009, 09:10 PM
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right i live near york so any idea where best to take car rolling road and will it be ok restricted i have not taken car over 100 mph yet
jacqui
jacqui
11 February 2009, 09:13 PM
#24
Not sure on a rolling road near you i'm afraid (i'm in Dorset) and your car being restricted should not affect your bhp reading on the dyno.
Unless you're going to do trackdays there is no need for doing more than 100
Unless you're going to do trackdays there is no need for doing more than 100
Last edited by myblackwrx; 11 February 2009 at 09:14 PM.
11 February 2009, 09:24 PM
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well i had a scoob the sam age 3 yrs ago and a gt4 before that and i am a bike nut and ride a honda blackbird and lets put it this way my new scoob seems very fast to 100 mph
so lets say gauge is right what would have had to be done to it and am i likely to blow it up ?
jacqui
so lets say gauge is right what would have had to be done to it and am i likely to blow it up ?
jacqui
11 February 2009, 09:36 PM
#26
Well the ecu may have been chipped ,easy way to find out is to open the ecu (passenger footwell,under kickplate resides the ecu, a few screws removed and the innards will be exposed) i disconnect hte battery when removing the ecu.
This is what it should look like unmodified
It will be putting a little extra strain on gearbox,clutch and engine but if you don't drive like the late,great Colin Mcrae all the time it should be fine (turbo is good for 1.5bar,300bhp engine wise depends on how well it's been looked after really).
This is all supposition obviously as internet diagnosis isn't really the best
This is what it should look like unmodified
It will be putting a little extra strain on gearbox,clutch and engine but if you don't drive like the late,great Colin Mcrae all the time it should be fine (turbo is good for 1.5bar,300bhp engine wise depends on how well it's been looked after really).
This is all supposition obviously as internet diagnosis isn't really the best
11 February 2009, 09:38 PM
#27
Very strange
Surly niether of these cars should be doing this sort of boost with out supporting mods. Quick Chicks z4 with a polarperformance chip is only good for 1.1 bar (my MY93 import doesn't show as low as -1bar even on over run) and Scoobymysters 2001 (iirc) as standard is .8 ish bar, strange niether are hitting fuel/boost cut. If you could both post which boost gauge you have (may be the same make, same common problem ) I'm baffled so you two must be totally 
concerned
Surly niether of these cars should be doing this sort of boost with out supporting mods. Quick Chicks z4 with a polarperformance chip is only good for 1.1 bar (my MY93 import doesn't show as low as -1bar even on over run) and Scoobymysters 2001 (iirc) as standard is .8 ish bar, strange niether are hitting fuel/boost cut. If you could both post which boost gauge you have (may be the same make, same common problem ) I'm baffled so you two must be totally concerned
11 February 2009, 09:44 PM
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you guys are been really helpful thanks alot i am going to have a look in my ecu tomorrow and try and get on a rolling road i aslo have asked a member on hear if i can have his tested boost gauge so try another one and want info on nearest and best rolling road will take car tomorrow
jacqui
i did notice that when looking at ecu today two bolts missing from floor pan cover so someone been inthere before
jacqui
i did notice that when looking at ecu today two bolts missing from floor pan cover so someone been inthere before
11 February 2009, 10:05 PM
#29
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My boost gauge is made by auto gauge. It a digital gauge that also gives you a battery voltage read out every ten minuites.
b13bat, do you think it could be because I've gone into the thicker pipeing on the dump valve. Do you think I'd be better going into the thinner vacum on the inlet manifold. If the cars running ok am I likely to cause damage
b13bat, do you think it could be because I've gone into the thicker pipeing on the dump valve. Do you think I'd be better going into the thinner vacum on the inlet manifold. If the cars running ok am I likely to cause damage
11 February 2009, 10:26 PM
#30
My boost gauge is made by auto gauge. It a digital gauge that also gives you a battery voltage read out every ten minuites.
b13bat, do you think it could be because I've gone into the thicker pipeing on the dump valve. Do you think I'd be better going into the thinner vacum on the inlet manifold. If the cars running ok am I likely to cause damage
b13bat, do you think it could be because I've gone into the thicker pipeing on the dump valve. Do you think I'd be better going into the thinner vacum on the inlet manifold. If the cars running ok am I likely to cause damage
As to damaging your Scoob i cant see it, as 'if 'you are hitting 20+psi (which i doubt) your ECU would cut the fuel supply well before to protect.
Thats not to say that you should leave it as is because there is a problem somewhere as with Quick Chicks.
Both of your cars may well be boosting correctly, but, what is the point of having a boost gauge if it don't tell you the correct boost level??