Cheapest Proper Pid Electronic Boost Controller (eg Generic Eboost)

[Rolls]

I just wondering if theres any cheap (non brand name) boost controlers out there that are still proper PID controllers. When I say PID I mean for example the eboost with the 3 tuneable parameters sp, gb and sn, these are the proportional, integral and derivative gain terms I imagine. This allows you to allow the gate to open exactly at the right time giving faster spool up over no boost controller, a bleed valve or just a plain electronic one with duty cycle vs revs gain only.

I know theres plenty of other good brand name EBCs out there but they are all $400+, was just wondering if there was something generic out there eg like the jaycar EBC but still allows you to tune all 3 parameters for ultimate boost control and you aren't paying for the brand name?

Just looking at using a bleed valve for now as I can't justify the $400 for the tiny increase in spoolup time and electronic boost cut protection.

Even if you don't know of any generic devices out there if people could list some of the cheaper brand name models that have this functionality that would be fantastic.

Cheers

[allthewaytotheskyline]

hks.evc 4. about $200 to $250

[Rolls]

After reading the manual it looks like it only has one gain setting, so perhaps it is not a proper PID controller or maybe it hides these settings from you? You can only change 'offset' according to this manual:

http://www.mygen.com/users/dbruce/myz31/HK...anual%201.0.pdf

Where as the eboost has 3 settings, one is the gain level for your max boost, and then two other parameters, which let you increase the sensitivity so it ramps boost up faster and harder, and another to control the sensitivity so that it doesn't oscillate.

Maybe I will just have to save up and get an eboost second hand.

[rob82]

After reading the manual it looks like it only has one gain setting, so perhaps it is not a proper PID controller or maybe it hides these settings from you? You can only change 'offset' according to this manual:

http://www.mygen.com/users/dbruce/myz31/HK...anual%201.0.pdf

Where as the eboost has 3 settings, one is the gain level for your max boost, and then two other parameters, which let you increase the sensitivity so it ramps boost up faster and harder, and another to control the sensitivity so that it doesn't oscillate.

Maybe I will just have to save up and get an eboost second hand.

Eboost aren't Pid or even pi controllers. Where do you enter your desired boost level? Any reason it needs to be a pi based controller - there's very few on the market. Give me an avcr any dayof the week.

[Rolls]

Eboost aren't Pid or even pi controllers. Where do you enter your desired boost level? Any reason it needs to be a pi based controller - there's very few on the market. Give me an avcr any dayof the week.

No reason I just figured it would give better control than a plain simple proportional gain controller. The fact that it had multiple parameters you could tune is what made me think this was the case.

Guess I will have to read some more reviews and find out what are the better EBCs then.

Edited June 20, 2010 by Rolls

[jjskyline79]

Eboost aren't Pid or even pi controllers. Where do you enter your desired boost level? Any reason it needs to be a pi based controller - there's very few on the market. Give me an avcr any dayof the week.

Agreed yet so many over here for some reason think other wise.

I do not believe the claims that it can not hold boost stable.

utter cod shit its not been set up correctly!!!!!

[lachlanw]

get an apexi avcr or an hks evc 4 .

both can be had for under $200

wtf do you want to fiddle with ramp for ? avcr is closed untill just before it reaches target boost . = max ramp rate , do you want it slower?

Edited June 21, 2010 by lachlanw

[Rolls]

wtf do you want to fiddle with ramp for ? avcr is closed untill just before it reaches target boost . = max ramp rate , do you want it slower?

People were claiming up to 500rpm decrease in spool time with some of the better EBCs, I thought this was due to the type of controller they were, turns out pretty much anything electronic will be better than a bleed valve and can keep it closed until just before you hit full boost.

[KiwiRS4T]

If you can build the Jaycar kit they are value for money (can sometimes pick them up second hand). You can adjust boost against injector cycle (not revs) and put in 2 switchable maps (don't know why people want 2 maps). Only got rid of mine because of change to Link and sep w/g ( Link will control boost).

[Rolls]

I looked at the jaycar kit but it looked like it based its boost duty cycle entirely on rpm not an error signal from the actual boost setting, though I might be wrong.

Can it match the ramp and stability of the brand name EBCs out there?

[KiwiRS4T]

I looked at the jaycar kit but it looked like it based its boost duty cycle entirely on rpm not an error signal from the actual boost setting, though I might be wrong.

Can it match the ramp and stability of the brand name EBCs out there?

Yes you are wrong - as above - the boost is adjusted with a hand controller against the duty cycle of the injectors (not the rpm - big difference) . Input = injector cycle, output = solenoid cycle.

It is possible to get rock solid 16psi for example. It does not have facility for automatic temperature adjustment but you could manually adjust the boost settings at the track to suit the ambient temps.

It is possible to adjust speed of boost build.

[tarmac]

i run a 'bcu' in my current r33 and have previously used one for quite some too and its works a treat.

adjustable gain on lo/hi boost + wastegate start open psi. .. 280$ nz i paid, does the job.