Electronic Boost Controllers

[944 man]

ORIGINAL: George Elliott

Or, alternatively, pls tell me how much will my 0-100 time reduce if I fit a bling box [][]

As well as maintaining a boost target, an electronic boost controller may be progrmmable allowing different boost profiles in different gears.

 

[Eldavo]

Just to be a pedantic oaf, the original quote was "simplicate and add more lightness" by William Bushnell Stout.

Colin Chapman nicked it and dropped the "more", the simplicate got changed over the years through various tellings to the more well known "simplify".

As you were gentlemen

 

[T3rra]

Iv got an Apexi. It's still needs a bit tweak now and then even in self learn mode.

I cut the inside top off the cubby hole out just behind the lip and halfway back between the lip And rubber. Apexi fits in the cubby hole and lives in the glove box when not in use or under passengers floor mat.

Apexi is readable so u don't need standalone gauge. I'm running barks ecu and can mointer every off android app on a smart phone, which sits in a dash vent holder, placed on the right off the dash. Easy mointer, and put away.

Not sure if the greedy or other ebcs or mbc hold boost when it tries to drop off, but on the Apexi I increased the duty cycle after 4.5 k so I can hold 1.3 nearly to red line rather then dropping to 1 bar on a fixed duty setting if you really want to get the most from your engine I would recommend http://www.augmentautomotive.co.uk/augtronic

Iv gone thought the tuning softwear with Tom over the last few nights updated the close loop settings and de bugging a connection on the throttle poison Sensor. I would recommend aumotive route to anyone going stand alone. Sent Tom the data log from a drive he checked it made the adjustment to suit my preferences and I just updated the ecu.

It all makes for a clean install and great uk product support. I really wouldn't know where to start with my own tune, so would off end up with just chip sets

 

[George Elliott]

an electronic boost controller may be progrmmable allowing different boost profiles

fair point Simon, a genuine benefit provided the Engine Management is clever enough to manage overboost such as on a 997TT or gear related boost limits. I voted MBC as my Engine Management is similarly basic.

If Santa brings me an Augment ECU like T3rra runs, I would agree I need a solenoid operated boost control.

George
944t

 

[George Elliott]

I would recommend aumotive route to anyone going stand alone.

Sounds great......to think we have a 991 era replacement for the OE Bosch Motronic pigs-ear-logic version ECU.

Thx for posting

George
944t

 

[944 man]

ORIGINAL: George Elliott

an electronic boost controller may be progrmmable allowing different boost profiles

fair point Simon, a genuine benefit provided the Engine Management is clever enough to manage overboost such as on a 997TT or gear related boost limits. I voted MBC as my Engine Management is similarly basic.

If Santa brings me an Augment ECU like T3rra runs, I would agree I need a solenoid operated boost control.

George
944t

I asked Tom about boost control last year and he said that he could include it.

 

[Indi9xx]

ORIGINAL: George Elliott
Sounds great......to think we have a 991 era replacement for the OE Bosch Motronic pigs-ear-logic version ECU.

Awe, poor Motronic!

I love the motronic, the real shame is that it spends a lot of time performing calculations to make all it's code and maps fit in a relatively small space, which is aggravated by it having to store numerous maps and tables which are never used, or for international use.

I good example is the airflow meter transfer tables, and the calculations used to turn three tables into a fine curve which would have taken up a little more rom space if they were pre-loaded, and it has to do this on the fly, hundreds of times per second, which if they had chopped out some of the more useless maps which were provisioned just to avoid recalling multiple ECU's if they discovered an issue in the mapping.. Once you chop these out, you have more space for code for the transfer function to be one large table, and free up loads of cpu cycles to do something more interesting or precise instead. And this is just one example.

I guess I am just autistic and just hate to right off a component until you really have maxed out the original items potential.. But also I think I am really attached to the fact that I can get it to do anything I want very quickly because I know it inside and out.

Toms ECU is cool, really cool... I just wish I could have it and have access to it on a software level.

I also think Toms ECU will one day be essential for keeping these cars on the road once used DME's dry up...

A good example is I have 3 KLR's in my lab office which can't be repaired.. Usually I find the faults in them to be down to one capacitor, one resistor or one voltage regulator which have reached the end of their life, or have been burnt out through another fault... However, there are a couple of components in there which just are not available, unless you were to build a daughter board to replace them. Which no one will do while they can be had cheaply on ebay, but also no one will do once the ebay ones are not available and the demand might only be one a year... But that one a year is another 944 which can't be fixed.

Toms solution, looking and acting OEM actually provides a future for these cars, and could be used in a stealth mode with a standard looking engine bay, passenger footwell and standard power levels to keep a true classic going. And to be honest, I think the DME and KLR are probably the only two parts of a 944 that could not be reproduced easily other than through the efforts of Tom.

So, well done Tom, I really am a fan of your product.

(And before anyone asks why I am bigging him up, No, I don't sell his product, have not installed his product, although would like to, so no other motive!)