Whats good for the money that works? is it better to go for something like HKS, Greedy, Blitz etc as well used on Jap cars

 

I can recommend Apexi AVC-R -Had one on my 200sx.. Fantastic bit of kit that controls boost very well with lots of useable features.
That was 10 years ago though so not sure if there is a modern version?

Also had a Gizzmo boost controller on the 3dr... Was ok but not a patch on the Apexi.. It really is a case of you get what you pay for

 

Yep they still do it...

Have a look through the features!

http://www.apexi-usa.com/store/elect...ler-black.html

There's loads on eBay.

 

i agree apexi the best

 

greedy very expensive and huge size.not need

 

turbosmart gauge built in one msd sell them there awesome

 

Let the ecu do it.

Mark

 

Agree with mark,

Most modern (made in the last 10 years) management systems will allow boost control.
Some of these electronic boost controllers almost cost as much as a stand alone management.

 

i have manual with 30 pounds so far no problems

 

This is what I have in place now
Although Brammer is on L8 hence why he is asking I guess..
You binning the air injectors Chris?

 

Air injectors controlled with ecu

 

Have been looking at getting a boost controller for my evo 8 and after doing a bit of reading it seems your better going for 3 port boost solenoid and letting the ecu control the boost. So if it's anything like the evo then more than likely the same.

 

so what ecus can control boost?

i take it you buy the airinjecotor setup and then send it all off for mapping?

 

I may be selling my turbosmart eboost street boost controller shortly. Was bought from MSD and only covered 3k miles.
I'm now going with OFAM management so will be controlling boost via the ECU.
I will be keeping the boost solenoid, so all you would need is a new boost solenoid and you would have a complete kit mate.
Let me know if you are interested.
If you look up MSD's site you can see the spec, pretty sure James runs the same in his new Cossie!

Grant

 

Any decent ecu can control boost....although boost control on all ecu's is most certainly not the same.


More importantly, what exactly do you need the controller to do for you ?

 

I had air injectors on my old t4 saph at 33 psi boost. a plug got knocked off one of the injectors and I was running 40 psi of boost !
that is the reason I don't like air injectors, if my greddy controller fails it just sits at wastegate pressure.

the best ive had so far is an apexi one in my first r32 that was awesome.

 

Wasnt there any overboost protection in place ?

 

I don't think so mate.
it was just set up to run 33 psi in the ecu I had no control over it myself.

I seem to remember they work opposite so when they fail there is no connection to the wastegate at all and its just held shut constant hence I ran 40 psi of boost for a bit until I noticed.

 

Yea, but when running a boost control setup like that, it's even more important for the ecu to have overboost protection.

If it doesnt then it's madness.

I can see little sense in a boost control setup, where the fail scenario results in huge boost, and no means of preventing it or shutting down to ensure engine safety.

 

I have no idea mate it was a while ago, it was only on a 3 bar map but running 2.2 bar with the 2 bar pegged for fuelling at 2.2 bar, I assume because of that it couldn't cut boost as map sensor was flat out and it cant cut what it cant see.

 

If it runs over 2 bar of boost on.a 3 bar map sensor then the ecu cannot see the boost over 2 bar to use any form of protection.

All the ecu knows is that it's at it maximum.

Aftermarket ecus have the required scaling and break points to use a 5 bsr sensor which is far more ideal, but the webers are not very nice on the 5 bar map sensor.

I use the turbosmart controllers quite a lot and as long as they are mapped on them they work very well and do have over boost protection built In.

 

that's exactly what I said but you worded it much better

 

If there can be no overboost protection in place, then it's quite inappropriate to be running it that way. Especially considering it's using a boost control setup where high boost is the default scenario.

 

It's not always the default.

By choice on big power stuff I would use an external waste gate with a soft spring using the air injector to pump air onto the gate to keep it closed. This way if the injector fails it returns to spring pressure, which is soft.

It's one of the reasons I used an aftermarket controller, but in my scenario I will run the turbo flat out so I wouldn't notice if the gate stayed shut anyway

so in the smaller turbo aplications they are run near flat out anyway so the fuelling is generally safe without boost control at high rpm as we are demanding the gate is closed up there anyway