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Air injectors

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Old 08-05-2009, 08:55 PM
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Moonstone Steve.
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Default Air injectors

I did ask this a week or so ago,

Are these the right way round if so which pipe goes to where.




Many thanks.

Steve
Old 08-05-2009, 08:57 PM
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J1mbo
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top to actuator, bottom to compressor housing
Old 08-05-2009, 09:03 PM
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Originally Posted by J1mbo
top to actuator, bottom to compressor housing
Thanks short stuff

Out of interest how come some people have the injectors pointing the other way.

Steve
Old 08-05-2009, 09:06 PM
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Psycho Warren
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does it matter if they are upside down as long as the relevant pipe goes to the same place??
Old 08-05-2009, 09:08 PM
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Dont know m8, wot is the bleed hole for in relation to which way around they are.

Steve
Old 08-05-2009, 09:23 PM
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Psycho Warren
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well im thinking it shouldnt matter anyway as its not like a normal fuel injector where the spray pattern is important and wouldnt work the wrong way round.
Old 08-05-2009, 10:33 PM
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pmsl at short stuff

i cant see a problem with it being upside down, some of the rally boys ran them like this ! personal choice i guess

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Old 08-05-2009, 11:03 PM
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Evey
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noob to turbos, but what do Air Injectors actually do?

Do they just leak boost in a controlled manner?
Old 08-05-2009, 11:07 PM
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they supply the actuator with air, the actuator then acts on a "gate" if you like to allow air to bypass the turbo or go through the turbo

the air comes from the front of the turbo, into the air injector, through the air injector and as above to the waste gate

the ecu controls how much air goes through the injector, this then effects what boost you have

hope that helps a little
Old 08-05-2009, 11:13 PM
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Originally Posted by J1mbo
they supply the actuator with air, the actuator then acts on a "gate" if you like to allow air to bypass the turbo or go through the turbo

the air comes from the front of the turbo, into the air injector, through the air injector and as above to the waste gate

the ecu controls how much air goes through the injector, this then effects what boost you have

hope that helps a little
A+ young man

Steve
Old 09-05-2009, 11:01 PM
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thank you
Old 09-06-2009, 08:14 PM
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focus 4x4
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wheres the best place to get a set of these air injectors?
Old 09-06-2009, 08:40 PM
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Turner RS
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To give information, many tuners charge for a twin injector setup when in reality only one is used. Fuel injectors burn out, gas injectors should be used.

You can tell by looking at your "air" injectors, you will see different part numbers on each, this confirms an owner has been conned. LOL.
Old 10-06-2009, 12:13 PM
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Two gas ones in mine
Old 10-06-2009, 12:17 PM
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Two gas ones in mine aswell.

Steve
Old 10-06-2009, 04:08 PM
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tabetha
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As stated correctly they need to be gas injectors, BOSCH have NEVER made ANY air injectors, all the ones I've seen sold as air injectors are CNG injectors, as to whether they will overheat under prolonged hard use is anyones guess, but they don't seem to.
Could also use a amal valve.
tabetha
Old 10-06-2009, 06:51 PM
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focus 4x4
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Heres my Air injectors , can anyone identify if they are the real deal or not.
both injectors are identical and have the same part number of M590HF 9381AA on one side and B..1223..02 on the other side of each injector.
Old 10-06-2009, 06:54 PM
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Originally Posted by focus 4x4
Heres my Air injectors , can anyone identify if they are the real deal or not.
both injectors are identical and have the same part number of M590HF 9381AA on one side and B..1223..02 on the other side of each injector.
are you sure its not ms90 ? as thats the group a number im sure
Old 10-06-2009, 07:08 PM
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focus 4x4
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The number defo statrs M5......
Old 10-06-2009, 07:56 PM
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Turner RS
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If they are both the same then they will both be working.

The normal used gas injector really only needs one due to its flow capacity.
Old 16-06-2009, 11:57 AM
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These are mine :





You can make out the part numbers on the box's - I trust they are correct as they were supplied by Matt Lewis
Old 16-06-2009, 03:35 PM
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a pair have always been used in parallel to obtain the correct impedance for the weber ecu
depending on the pair of injectors used dictates whether an in line resistor is required.
you cannot obtain the correct impedance for the weber ecu with one injector of any type
Old 16-06-2009, 07:40 PM
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richard youll
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dazc on here supplies them on here single or twin set up identical to the 909 twin set up with loom ready to plug and play very very nicely made aswell!!!
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