Apexi AVC-R........Does anyone have access to a wiring diagram or able to point me in the right direction as where to get one from for a standard ECU saff cosworth???


Ta
Daz

 

You can dl the full manual of the apexi site
Its pretty staright forward....live,earth,rpm signal then the solenoid and pressure sensor have there one little wiring loom so plug n play for those.

 

Anyone else have it to hand, website unclear......


ta
Daz

 

Unclear You might want to get somebody to wire it in for you mate
Red- power
Black - ground
Purple- rpm(dont use injector signal)
Grey- throttle
White- speed signal
Yellow/green- ground

 

You sure it's Yellow/Green for the second ground? I thought (from memory) that it is Brown.

Also, the 2 grounds are supposed to go on the same wire, but not joined. They should go 10-15mm apart along the wire.

 

Nope, according to the manual Yellow Green wire - Connect to ground.

No mention of a brown wire.

 

You had much experience of settings these up on an FRS, had one fitted today and we've been unable to get it set up properly. It suffers from boost surge, ie the boost reaches a certain point ie 19-20 psi and then instantly drops to around 15ish, then surges back up.

 

Have you tried running that much boost without the controller? Surge would more be pointing towards bad turbo spec...well bad in conjuction with you engine spec i mean, not neceserily a bad turbo full stop.
Personally the only prbelms i had with the avcr was it had a tendancy to let the boost creep just a little over what it was supposed to be and you were forever fine tuning it. It mega time consuming but well worth it if you use the facilties this controller has.

 

It will struggle to control the boost when the target boost and duty settings aren't right.

Turn all the learning functions off, run the car with the controller turned [OFF] and establish what boost it will make on the actuator.

Then turn it onto [A] and work your way up. Set the target boost to, say, 1.00kg/cm and the duty to 30, then adjust the duty until you get around 1.00kg/cm.

See how you go with that.

 

Its on a Focus RS with std turbo, just has a Bluefin, Mountune fanimold, K&N panel, denso iridium's


cheeRS Christian,

I actually did that this afternoon and found with it off it only boosts to less than 1 bar. With the unit off should it react the same as if it had never been fitted. BTW a new actuator was fitted at the same time as the AVC. Now its using the AVC boost solenoid how should I set the actuator? Should I set the preload so it boosts to about 15-19 psi with the AVC off?

 

BTTT

 

You shouldn't really change the pre-load on the actuator. What pressure should the actuator be? 10psi?

What is your target boost? 19psi?

Have you made sure that the 'Learn Gear' page has 'X's in all boxes and that the 'Start Duty' is all at Zero?

 

The actuator was installed at the same time as the AVC-R (Not by me I hasten to add, I would probably have installed the actuator and then set the pre-load before installing the AVC-R)

All the learn gears are X'ed and start duties at 0%. Having never changed an actuator on an FRS I have no idea what it should be set to but with the AVC-R switched off i get around 10psi boost. Thats after me taking it off and reducing the length by 2 turns to increase the pre-load slightly as advised.

 

So, what happens if you now try and adjust the boost a little at a time as I said earlier?

 

This is the bit I dont understand. With the AVC off I get approx 10psi boost max. With it on I set the Target Boost Pressure to 1.35kg/cm2 which should give approc 19-20 psi. What I ended up with was more like 25-30 peak boost but it dropped back quickly. I ended up with the Target Boost Pressure set to about 0.35 with a Duty Cycle about 60%.

Is the target boost pressure not supposed to be the figure you are after?

 

BTTT

 

Yes, the target boost pressure is indeed the figure you are after.

But, do it gradually. Try and make it control 0.8 kg/cm first, by setting 0.8 kg/cm and a duty of 30%. Adjust only the duty value until you are making a fairly reliable 0.8 kg/cm. I know that this is only slightly higher than actuator presusre. Don't worry if it drops off a little.

Then raise the target to 1.0 kg/cm and the duty by 10 and see where that leaves you. Each time make sure you hit the target boost. I know it's a pain, but it is the best way if you are struggling as there may be another reason and this will pin-point where the problem is occurring.

Once you have hit 1.0 kg/cm, go for 1.2, as above. Raising the target to that and duty by 10 and trimming to hit the target.

Once the controller has reached your desired boost level, then you can begin the learning process. I can tell you how to do that too, but lets get over one hurdle at a time.

Are you sure it is piped correctly?

 

why not use the injector signal ( other than it drops off on over run )i used the crank sensor to start and had hard starting problems ???

ps spot on with the wire list !!

i have been meaning to make up a diagram for this, will try and finish it and get it up on here...

 

What about with the Apexi turned off, should I set the preload on the actuator to make more than its currently doing more like 1 bar?

 

It would be better for it to be making 1-Bar, but I don't really think you should over-load the actuator. Half-a-hole of pre-load should be fine. See what that does, using my instructions above.

 

Dennis the only reason i dont use the inj. signal for an rpm readout is under max injection you can get a false rpm reading
Also plays havoc on overun and when self learn is on you get a crazy duty map that looks like the himalayas

 

Right, been playing today and with your help Christian I think I've got it sussed. I reset the unit so it went back to original settings, with all the gear-based stuff off. I Turned the duty cycle right down to its lowest, 20% I think it was and set the target boost to 0.5 kg/cm2. I upped the duty cycle until it hit the boost limit set. I gradually upped the boost and carried out the same process until i reached 1.35kg/cm2 or just over 19psi. Once I was happy that the boost was not peaking past 19psi I turned on the gear stuff and set up the speeds. I then turned on the gear learning and started to check the boost through the gears. I found that in the higher gears boost was dropping back to around 1bar so played with the feedback settings. I havent quite finished yet but was finding it difficult to keep an eye on the boost while flooring it in 4th & 5th, too many sunday drivers and horses on the roads I will say that on my uphill stretch of private test track I can now hit 120+ whereas before I was lucky to get to 110-115!

Thanks for taking the time to help Christian, much appreciated. The manual says how to do stuff but doesnt explain why

 

S1 - Make sure you only set it to learn in one gear, usually 4th. Otherwise it will get all confused!!

 

What does it actually learn? Think all gears are selected for learning at the mo

 

BTTT