Best Dual Stage Boost Controller

[Rekin]

Hello,

Im after a 2 stage electronic boost controller.

Either one which has wastegate boost pressure and a defined boost pressure chosen by a switch or two defined boost pressure.

Reason is, im trying to setup a fail-safe method, and need a way to trigger to low boost/wastegate pressure from a defined setting when shit hits the fan.

Thanks

[Rekin]

One option ive discovered is to run a mac valve with a manual bleed valve.

As you can see from the picture, when the mac valve is triggered, it routes it straight to the wastegate and effectively cuts boost. Problem is the mac valve looks chunky and ugly.

Looking for a small decent dual stage boost controller which does the same.

[Rekin]

or; how would an EBC react when it is switched off under full boost etc? Will the solenoid open and revert back to wastegate pressure under full load? Has anyone tried turning off their boost controller at 15psi+ ? haha

[Wheezy]

sounds like overkill.. Whats the theory behind it?

what about an ebc like a blitz dual solenoid which can pull back the gain when a spike and or the threshold has been passed?

I have seen my own work very well on the dyno when I popped a cooler pipe.

[Duncan]

greddy profec b has a 2 stages (hi/lo) plus off (wastegate pressure) plus an overboost warning and overboost cut. sounds like all most people would require....guess it depends what you mean by all going to shit.

if you are trying to minimise motor damage when something goes really wrong cutting boost won't do - you need to stop the motor. we use an oil pressure switch in the wire that earths the coils.

[PROXIMITY]

I use a turbo smart dual stage on 1 car and hks evc III on another, i dont think you can go past ebc.

But i like what Duncan has said above with the oil pressure switch.

[noone]

But i like what Duncan has said above with the oil pressure switch.

Want to eventually hook mine up with a Hobbs switch (pressure switch ) on both oil and fuel pressure

oh and an over-ride so I can actually start the car

Probly best chance of saving it if all goes wrong, again

edit: I guess if ya made the override so ya had to hold it in/on it wouldnt be bad security too

Edited March 4, 2010 by noone

[Rekin]

thanks guys for the help. Reason why I ask is because im installing a water/methanol injection system into the car which has a failsafe trigger. If the water/methanol flow sensor detects no flow then I want the boost to drop down to wastegate pressure, as the engine will lean out bad if it runs without the water/methanol.

So trying to find best way to cut boost.

Im also looking into how to trigger knock map on my ecu so boost is dropped to wastegate and running on limp mode

Cheers

[jjskyline79]

I have an AVCR running .85bar high boost if i turn it off it reverts back to manifold pressure .5bar (ish)

[STATUS]

if you wire in your low level indicator cut out on the power source for your ebc it will revert to stock if triggered.

[Rekin]

if you wire in your low level indicator cut out on the power source for your ebc it will revert to stock if triggered.

awesome, thanks for that. Time to get an EBC now. What do you recommend?

Once the system is in, ill be popping past your place for a water/meth tune

[JonnoHR31]

+1 for profec b II. hi/low that can be triggered by a momentary switch, only cost me a few dollars to make myne. and as duncan said, gate pressure when turned off

[jjskyline79]

Apexi avcr if you can get hold of one that is

It is with out doubt the best ebc on the market today

It has hi and low boost settings with scramble boost and correct me if im wrong but i also think its close looped??

The boost can be controlled at each rpm stage through each gear so you can control the ramp up speed to avoid wheel spin it also has a self learning function, as well as all the gauges built in, boost gauge inj duty throttle speed rpm ect

What i find pritty cool about it is there is a record function that allows play back of reading you have recorded.

Eg boost levels its a bit hard to see if what the boost is doing in real time when your setting it up and trying to keep your eyes on the road you can record up to 4 sensors at one time for comparision play back

They cost a fair bit now but a few come up on the uk ebay sites every now and then and im sure if you go on skylineowners.com and ask a trader there there be more then happy to help if they have them in stock

Or there is a gizmo ebc on the market that is surpose to be quite good for the price you pay about £200 whats that less the $400

May i also advise you to stay away from manual bleed valves from experiance they have a tendancy to want to self adjust and with out a gauge you have no way of knowing.

Just my 2p

Edited March 4, 2010 by jjskyline79

[TiTAN]

thanks guys for the help. Reason why I ask is because im installing a water/methanol injection system into the car which has a failsafe trigger. If the water/methanol flow sensor detects no flow then I want the boost to drop down to wastegate pressure, as the engine will lean out bad if it runs without the water/methanol.

So trying to find best way to cut boost.

Im also looking into how to trigger knock map on my ecu so boost is dropped to wastegate and running on limp mode

Cheers

if the ecu supports dual fuel/ignition maps, use the flow sensor to switch maps to a lower ign timing/more fuel map.

[STATUS]

Apexi avcr if you can get hold of one that is

It is with out doubt the best ebc on the market today

It has hi and low boost settings with scramble boost and correct me if im wrong but i also think its close looped??

The boost can be controlled at each rpm stage through each gear so you can control the ramp up speed to avoid wheel spin it also has a self learning function, as well as all the gauges built in, boost gauge inj duty throttle speed rpm ect

What i find pritty cool about it is there is a record function that allows play back of reading you have recorded.

Eg boost levels its a bit hard to see if what the boost is doing in real time when your setting it up and trying to keep your eyes on the road you can record up to 4 sensors at one time for comparision play back

They cost a fair bit now but a few come up on the uk ebay sites every now and then and im sure if you go on skylineowners.com and ask a trader there there be more then happy to help if they have them in stock

Or there is a gizmo ebc on the market that is surpose to be quite good for the price you pay about £200 whats that less the $400

May i also advise you to stay away from manual bleed valves from experiance they have a tendancy to want to self adjust and with out a gauge you have no way of knowing.

Just my 2p

unfortunately the avcr is nearly a decade behind and is one of the poorer performing boost controllers.

[jjskyline79]

What?????

ARE YOU KIDDING ME

In the UK this IS the best you can get there is nothing that comes close do doing half the things this ebc can do

It mainly comes down to having it set up correctly performance wise as a vast amount of people out there dont understand it and chuck it in learn mode, so yeah it wont perform that well as its not set up for each car

But set it up for the car with the correct rpm boost vales and gear based boost control function and your laughing

So what have you guys got here that dose all more and better then???

Edited March 5, 2010 by jjskyline79

[STATUS]

What?????

ARE YOU KIDDING ME

In the UK this IS the best you can get there is nothing that comes close do doing half the things this ebc can do

It mainly comes down to having it set up correctly performance wise as a vast amount of people out there dont understand it and chuck it in learn mode, so yeah it wont perform that well as its not set up for each car

But set it up for the car with the correct rpm boost vales and gear based boost control function and your laughing

So what have you guys got here that dose all more and better then???

for starters the blitz spec r is much better especially when combined with the power meter as it can do all the bells an whistles you talk of but at twice the resolution and speed.

even the basic spec r (or any blitz dual solenoid) ramps up noticably quicker than the AVCR (no ramp / gain control) and this is where the AVCR lags behind other controllers that do.

We did alot of testing of controllers back to back and the AVCR placed towards the bottom end of the major jap brands. Ive had avcr's in a few cars of my own and know how to use them but stopped using them 5 odd years back when the later blitz gear started out performing them.

[jjskyline79]

But blitz, Greddy, Sard & Turbosmart , all read boost pressure from the engine by vacuum hose till dashboard. Only AVCR and HKS reads them electronically using a MAP sensor correct me if im wrong??? How is the blitz quicker??? is it also closed loop???

The AVCR has all the bells and whistles built in no need to buy any extra bits but if you buy a power fc you can do even more as you no but at an added cost

As said before you can adjust the avcr to ramp up as fast or as slow as you like at any rpm in any gear so im still lost that you think its 10 years behind and has poor performance it appears to be fully adjustable or at least more adjustable then most it even monitors injector pulse to maintain stable boost, hell it want even start learning until it detects safe stable boost that's a got to be good right??? you can even set the feed back rate on its own self correction

Amongst all the other features there is even a ghost boost map graph to allow easy comparisions as well as the record function and you can have it either presented digitally in anolog or via a graph

I carnt comment on any other ebc because i've only ever used a manual bleed valve personally that i thought was crap really tbh self adjusted could'nt control the random boost spikes and creep and thought it would do more damage then good so got rid asap

I've never had any problem with any AVCR i've set up or seen any that they were slow to "ramp up" but then i would have set it up for the car and what the user wanted and i would have thought they would have said something if it was "slow"

I no people that have them and have no problem with them and have thought they out perform many other ebc on the market by leaps and bounds.

Sorry if this post sounds like im having a go but how is that 10 year behind and poor performance maybe is it to much for some people and all they want is a boost controller???

To me the AVCR is a boost controller.

[VB-]

even the basic spec r (or any blitz dual solenoid) ramps up noticably quicker than the AVCR (no ramp / gain control)

i remeber playing with an AVCR on my mates car, i'm pretty sure it had gain control... unless i'm missing something?

Edited March 5, 2010 by VB-

[jjskyline79]

It dose have a gain control the Boost Duty Cycle can be modified.