A couple of questions on this one.

1. Are the original air injectors still available. I seem to remember they stopped producing them some time back.

2. I also seem to remember IMA mentioning that now a single air injector replaced them

3. Can you run them on a L6 ECU.

4. Where do they connect into (Electrics) and do they come with a wiring harness.


Jim

 

1. Are the original air injectors still available. I seem to remember they stopped producing them some time back.
http://www.randbmotorsport.co.uk/sho...p?ProductID=94

2. I also seem to remember IMA mentioning that now a single air injector replaced them.
Not replaces, supplements

3. Can you run them on a L6 ECU.
Only if converted, so best to use a L8. Obviously has to run a Pectel board and have the air injector control and boost pot enabled (if you require adjustable boost).

4. Where do they connect into (Electrics) and do they come with a wiring harness.
Goes to pin 16 (I "think" whichever is the normal amal control anyway) on ECU. Yes, but only one that is designed to plug into a Pectel loom, so needs extending to reach ECU if a new Pectel loom is not used

 

How do they work, and why have them?
(I have spare storage capacity available in the memory section of my brain, since deleting the images of my lovely new gearbox )

 

Good info from Mike apart from this bit...

As we sell an air injector control board to fit all Level 1, 6 and 8 Ecu's (Not just Ford fitment) to allow the use of Air - Air boost control without the use of Pectel hardware. These are however only available in conjunction with our own maps though and will not work with someone else's software.

 

Not required on a pony (AKA tiny) turbo like a T3/4 (as the wastegate is fully closed at high rpm (if a strong enough actuator is used) and the engine is consuming all the air the turbo can provide, hence the boost tail off). However, on a bigger turbo that can actually provide more air than the engine can consume, the air injectors are used to accurately bleed off air to operate the wastegate capsule (actuator) to modulate the wastegate to obtain the correct amount of boost (as programmed into the ECU).

At this level, the amal valve isn't really accurate enough, as the boost pressure can force open the spring in the amal valve, allowing boost to climb.

 

May i ellaborate a little please Mike?

Air injectors are also required for such trim levels that require us to run less boost at certain RPM and load points to prevent a phenomenon known as "Surge".

In these instances we can keep the compressor below its surge line until such time as we can increase the boost in keeping with the engines consumption capability.

Air injectors are also very usefull for programmed peak boost levels with smaller turbos where we want the peak to occur only within a pre determined RPM area. This is not possible with Amal Control.

Hope this helps.

 

So do ~I have to run an amal valve with my T4? or not?

 

Stu,
What if I had said no? .

However, you may .

Chris,
ABSOLUTELY YES! For the reasons Stu put regarding surge and the reasons I put regarding top-end boost control.

 

Stu could you ellaborate on Mike's answer please?

 

Id have edited your answer


No.... run air injectors

 

Stu,
Bastard - he said air injectors and you changed it .

 

Behave...

You have very important E-Mail by the way Mike.

 

Stu:

how do air injectors compare with the programmable Jap boost controllers that you can vary boost curves?

 

In fact the ones i supply are used in pairs...its only the expensive WRC air injector thats used singular.

 

Depends on the ecu in use.
Aftermarket stuff simply uses a similar method and a pulse system to vary the air pressure avaiulable at the wastegate capsule. This is EXACLY how most Ecu's work, but some of teh jap stuff has more definable targets such as peak scramble etc etc..

The jap stuff has the advantage of being user controllable, although with many customers i fail to see that as an advantage and see it more as a danger point

 

Make sure you get the genuine WRC one's not the pikey copies which burn out like mine!

 

GGR also do a single air injector Kit. Under £250 I think. So is this yet more bad advice Phil?

 

so you were chatting shit about not needing them on small turbo's werent you Mikey boy Why would T34 equiped rally cars use them if you didnt need them

 

They use 'em so they can have HUUUGGEEEE boost at low revs rather than limiting them like you have to with a T4

 

Dom,
Because on high compression cars, they need to run massive amounts of boost (as much as 3 bar down the bottom end) to negate the effect of the restrictor (which means the boost tails to single figures at high rpm). Thus air injectors are required to accurately control this massive spikey boost curve. The amal valve would not be able to do this accurately enough . Next? .

 

Exactly, My saff run 45psi from 300rpm then backed off to 7psi above 4000, hence why I used them

 

Twat

 

you're a HOM

 

Porkie....yes i have heard about the GGR ones and are sposed to be shite...so no, very good advice from me...and as i supply many tuners with em..i cant be wrong.


Its a pity you only read magazines,there is a real world out there

 

You are stating that as a FACT.

When its NOT true...

I have no direct experience of the GGR product and nor do YOU by the sounds of it because you say this.
I NEVER said the product was any good (I don't know of anyone who has used it) I was just proving that once again you are talking poo!

I actually saw the GGR single at the Motorsport show at Birmingham when I was with a nice few people from this site enjoying a day out together....(yes that does sound gay)
I think its actually YOU who doesn't realise their is a real world out there

 

Not that you'd know anything about that, having never ventured into it

 

Jon m600 runs a GGR single air injector.

 

Has he had any problems????

PLEASE say noooo!

That would be another for Ima

 

Porkie dont worry it works fine m8.

 

Nope, sorry I don't believe you! Can't be true... I mean can you not read Jon?

Look here...

 

 

LOL @ Ima the tuning GOD!!!

 

 

I remember that - sits where your turbo pre-filter sits...........

........... and yes, it does sound very gay

 

No sorry Rich, that can't be right because I don't know anything about the 'Real world' and just sit in and read magazines all day.

Look 'TG Ima' said so... must be true

 

Lee... please, for the sake of my sanity...






















Learn to "NOT be quite so fooking funny eh? It really is affecting my ability to do important things, like Breath, and view the forum armed with a brew!! (Keyboards and monitors appear to strongly disslike Nescafe gold blend!)

 

 

wot ones burn out?
been told all the new sort burn out, and only the original wrc are worth touchin, cos all the new ones are fuel inj runnin to thier max to flow enough air.
if surge aint a problem, why cant a bleed valve be used as if set up rite, cant go out or fail...