Port Injection controllers, ?

[iminhell1]

So what is out there?
What is the safest?
What are the costs?


I know there is AIC6 ... I can't find much technical about them though.
Is it a bank/batch fire, sequential?
What can be adjusted on it?
What type of injector can it run?
Can you log, how? Easy to correlate to DME/MHD logs?

JB4
As I understand this one the fuel control is an add-on.
Is it a bank/batch fire, sequential?
What can be adjusted on it?
What type of injector can it run?


It looks like the JB is a fair setup, boost and fuel control in a single setup. Vs Boostbox and AIC.


I guess I want a push. The fuel side is my hangup with going further (same as most everyone). I need something reliable and robust. I don't plan on taking the car out of daily duty and it has to work in subzero temps as well as 100+ temps.

 

[Erichale77]

Both of those are batch fire but a sequential controller is right around the corner.

 

[iminhell1]

Both of those are batch fire but a sequential controller is right around the corner.

Batch being a general term,
Is it fire all at once, in pairs, in banks? I assume all at once, but hope not.

 

[Erichale77]

I was told that the AIC boxes fire all at once. I think Justin(V8bait) explained their operation awhile back when they came out.

 

[iminhell1]

AIC1 = fire all 6 at once, high impedance only
AIC2 = fire 3 at a time, high impedance only

Looks like most that sell the AIC for the N54 are using the 1 version.

 

[Terry@BMS]

JB4
As I understand this one the fuel control is an add-on.
Is it a bank/batch fire, sequential?
What can be adjusted on it?
What type of injector can it run?

PI injection is mapped as batch fire and the amount is automatically adjusted for the various critical criteria like injection pressure and ethanol mixtures. More importantly there are several additional functions like tip in surge (to prevent fuel pressure drop during transitions), fuel trim bank to bank safety systems, and a lot more that make it a safer and easier setup than any of the stand alone boxes.

There is a FAQ posted here: https://www.n54tech.com/forums/showthread.php?t=28478

 

[Chris@VargasTurboTech]

We have been running a sequential controller for a while, that does much more than control injectors. Drop us an email or check out this thread for a little more info

Expired - VTT/Adaptronic M2000 ECU Upgrade: N54 Full Sequential control of Port Injection with up to 8 Injectors supported + HPFP, LPFP pump control

Here is something we have been working on for a while, and it has been running in our shop car for about a year in various stages. We have slowly added more features and taken more control away from the factory DME with great success. (The earlier anti-lag video we posted was NOT using this for...

bmw.spoolstreet.com

Chris

 

[V8bait]

AIC and JB4 are both batch. AIC offers tuning via boost vs rpm in terms of absolute injection time, with no feedback controls to speak of. The computer controls in this car are sufficient to make that suitable for the most part, especially now that MHD has ignition coil cut safeties. The higher up your build goes and the more aux systems you're trying to use on their own, the more beneficial a better controller gets.

For example, many people go stepwise, adding a second fuel pump on a Hobbs switch, pi with aic, then single turbo, maybe a boostbox or turbosmart controller, add a wotbox etc. In many ways, a better controller that can do sequential or at least semi sequential, with greater tuning abilities, would simplify things as better controllers can also trigger additional fuel pumps (eliminates Hobbs), run NLS/2 step without a wotbox, and control boost. The haltech and VTT's solution can also run the PI with many safeties in a somewhat closed loop way.

This doesn't really cover jb4 that has most of these features but with their own drawbacks, such as the NLS isn't adjustable like WOTbox and others, PI is batch, hijacks the CAN, only moderate adjustability on said controls. But there's many successful ways to do things.

 

[Rileyg]

Both of those are batch fire but a sequential controller is right around the corner.

Care to tell us more about this new sequential controller?