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hiting boost limiter at 4000rpm in forth

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Old Dec 16, 2006 | 05:50 PM
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Default hiting boost limiter at 4000rpm in forth

fitted my new -31 acuator today, played around abit and finally got it running nicely, took it for a test run and found that in forth it woulnt go past 4000rpm but it would in every other gear, i take it this is the boost limiter kicking in as my ecu is not chipped,

i will lower the boost slightly tomorro and see if it still happens, just wondering if im correct and if any1 else has had this

and please no replys saying take it to a garage, else i woulnt be asking this question
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Old Dec 16, 2006 | 06:03 PM
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Id have thought it would hit the boost limiter in every gear not just 4th but i may be wrong !!!!
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Old Dec 16, 2006 | 06:03 PM
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LOL about taking it to a garage!!

Take it to a garage!!! PMSL.

Seriously though, you are almost certainly hitting the 10psi cut. Take half a turn off the actuator and that should sort it.
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Old Dec 16, 2006 | 06:04 PM
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4th tends to be the gear that loads the car up fully and forces the boost up. It would probably hit it in 5th too, but you would need to be ragging it hard to do that.
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Old Dec 16, 2006 | 06:07 PM
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Thanks christian, i should be fitting my -31 2moro.

Heres a question for you... I took my actuator hose off the anamal valve and ran it up the road to see if my car was chipped it hit 20 psi before i backed off with no problems doesnt this sound like my cars chipped or will a RS do that if it was not chipped ???
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Old Dec 16, 2006 | 11:54 PM
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Thats definitely one thing you dont want to be doing, running an actautor without the the correct hose going to it.
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Old Dec 17, 2006 | 11:00 AM
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thanks guys for the help, im slowly learning all this boost malarky lol

will turn it out half a turn and go for a test drive
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Old Dec 17, 2006 | 02:12 PM
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im currently running my car without a pipe going to the actuator as i dont have a amal valve or bleed valve, but have boost gauge, i dont take the boost past 14psi ever,
i once floored it and it went upto 20psi, then i changed gear and shat my self as it chattered like fuck!!!!!!!

but am awaiting a amal valve coming,
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Old Dec 17, 2006 | 04:00 PM
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Originally Posted by davsmith64
im currently running my car without a pipe going to the actuator as i dont have a amal valve or bleed valve, but have boost gauge, i dont take the boost past 14psi ever,
i once floored it and it went upto 20psi, then i changed gear and shat my self as it chattered like fuck!!!!!!!

but am awaiting a amal valve coming,
Personally........i wouldn't drive that. Its VERY easy to snap the shaft on the turbo or just blow the entire engine up...........
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Old Dec 18, 2006 | 01:21 PM
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yeah i know exactly what u mean mate, its only like that tempory, also i dont drive it boosting all the time, i rarely go above 50 anyhow,,
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Old Dec 18, 2006 | 01:41 PM
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davsmith64, at a bare minimum for you i'd run the hose from the actuator to the compressor housing and that'll give you 12psi and wont go above.

Is your car even set up for 14psi? your asking for trouble!!

Anyone know why my cars hitting 11/12psi? standard boost/no bleed valve/-31 (afaik) chipped. . amal valve/piped up correct (if one of the hoses was loose, would that make it overboost?)
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Old Dec 19, 2006 | 03:36 PM
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I tryed looping from actuator to turbo but then the car wont boost above 6psi then!!

my current spec is,
1600 cvh with .5mm mahles (forged)
EFI Converted (ofab with chip)
beige injectors,
stage 3 Area six big valve head with kent cam and multiangled valve seats
port and polished with matched manifolds
magnex full system
cossie t3 turbo ( .48 housing )
pro alloy cooler
filter
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Old Dec 19, 2006 | 04:41 PM
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Your better off running 6 psi mate, seriously, as slow and tedious to drive as it may be, it will be less tedious than an engine rebuild!

I know which i would rather do. And you don't even know how high you can boost without running lean. VERY risky ground IMO
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Old Dec 19, 2006 | 05:07 PM
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yeah know what ya saying mate, may just buy a amal valve and take it straight for a setup..
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Old Dec 19, 2006 | 05:08 PM
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Would be the safe option.

You don't HAVE to have the amal valve though......
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Old Dec 19, 2006 | 05:10 PM
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deffo get it to someone who knows what their doing unless you want to re-build it!!!

it's not a case of if the car needs it, its a case of the car DOES need it
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Old Dec 19, 2006 | 05:20 PM
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Originally Posted by vroooom ptssssh
it's not a case of if the car needs it, its a case of the car DOES need it
Presumably you mean the set up and not the AMAL?
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Old Dec 19, 2006 | 05:24 PM
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yeah i know whay i am doing and i deffo know the big risk to it also!!
as they way its setup the turbo is getting unlimited boost but on limited fuel, which will cause the car to run very lean on high boost,
i deffo know it needs to go for a setup for certain..
but what i am pointing out it that i very rarly put the foot down, i know its stupid rigging it up the way it is.. but as i say i have ordered a amal valve for it and when that comes i will be putting it on!!
i dont even think the car has done above 70..

i run it in with the waste gate open i.e no boost, then rigged it this way after about 2000miles, also the engine is for sale soon

lol, any1 wana buy it?
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Old Dec 19, 2006 | 06:30 PM
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ooo me me
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Old Dec 19, 2006 | 06:48 PM
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lol.. im taking the piss u numpty!!!!!!
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Old Dec 19, 2006 | 06:53 PM
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Lol and you thought i actually wanted to buy it

have you heard..........they are taking gulible out of the dictionary
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Old Dec 19, 2006 | 07:00 PM
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no i didnt think u actually wanted it no, i knew u was taking the piss out off me!!!!
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Old Dec 19, 2006 | 07:50 PM
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yer alright then

Whatever u say
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Old Dec 19, 2006 | 07:55 PM
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like am guna think u want it when u put a crying face at the side of what u said!!lol

i got a question 4 ya tho, my car only starts now and again on the key, i have to use a button start otherwise, any ideas..
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Old Dec 19, 2006 | 08:02 PM
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You never know, you might of believed it

As for the second bit

Any button in particular??
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Old Dec 19, 2006 | 08:04 PM
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nah a propper push start button,, that i had to wire in just in case!! its really randow when it happens,
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Old Dec 19, 2006 | 08:04 PM
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Where is the button wired to
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Old Dec 19, 2006 | 08:06 PM
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the ignition, and through a relay that came with the kit..
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Old Dec 19, 2006 | 08:19 PM
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Yea but what i mean is, that button should only intervene the starter solenoid wire. So where are the wires connected to?
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