ibm380d

Anyone got any views on these ? I have the oportunity of buying one and the data sheet from Apexi seems very good...

john banks

It will change fuelling AND timing together and you have no control over them independently.

john banks

5 RPM zones is poor resolution.

VTA BOV is a problem on over-run and since the SAFC has inadequate throttle resolution probably wouldn't help much.

To pass MOT you need 14.7:1 AFR which is controlled closed loop with your lambda sensor and a working cat. Running leaner will increase NOx levels even though the CO and HC levels will pass. So you get the CO and HC low at stoich and use the closed loop lambda control and cat to bring the NOx down. There is no other way to pass an MOT on a Scoob that I am aware of.

Claudius

Yeah, the new AFC is more precise than the old one.

There's a BOV correction function in there called "idle stability control" or something like that.

But John's right, timing and fuelling will be altered together given the very nature of the ECU maps. So you'd better monitor the AFRs and knock when tuning the car.

Sure you can use it to lean the car out for MOT

Later

C

Mickle

And here's a cheap one http://www.thegecko.biz/ApexiSAFC.htm

ibm380d

The blurb talks around the ability to adjust fuelling at 5 different RPM levels and its particularly good at solving BOV issue's (Open Atmospheric blow off) as opposed to the standard type. Again is anyone using this bit of kit. My car never passes the emissions test but I could potentially lean out the mixture at the MOT RPM levels and make it pass ! They seem to crop up in Revs, Fast Car etc but I haven’t seen anything here Good or Bad ?

Cheers Eric


[Edited by ibm380d - 2/4/2003 3:13:50 PM]

BoxerFlat4

Functions of the new S-AFC :-
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DISPLAY

The new Super AFC-II utilizes a state of the art visual display lighting called Vacuum Flourescent Display (VFD) to provide a bright & clear visual information. A new dot matrix monitor enabled a variety of information to be displayed simultaneously where the driver can check quickly. Information relayed can be either displayed numerically (analog gauge style) or graphically.

BODY

The body of this new product is slimmer & smaller (H52 mm x W126 mm x D18 mm) than the previous offerring. This ergonomically designed body houses only a "center button" which toggles & rotates where it enables the driver to navigate (4-axis toggle: up& down, and left & right) and to select functions of the Super AFC-II. This button also has a feature that enables the driver to fine tune any parameters. All these features in the new model's user interface made it much easier & efficient compared to the older model.


FUNCTION
----------------------------------------------------------------------------
KNOCKING MONITOR

The new Super AFC-II has a new knock sensor function which alerts the driver. This ensures that the engine is tuned to perfection at every stage. This function only works on vehicles that has an engine knock sensor.
MEMORIZE 2 TYPE OF SETTING DATA

The new Super AFC-II can save two data setting from data collected with respected to air flow adjust rate, throttle duration, engine RPM, etc. The driver could use these two settings in a variety of driving conditions, be it track, street, or just plain cruising.
PASSWORD

To avoid the new Super AFC-II from tampering by unauthorized users, a password can be set for protection.
WARNING

The driver can set up various warning functions inorder to monitor the engine operation. These functions includes incoming air flow rate, suction pipe pressure, engine knock RPM, etc.
Others

Settings & data stored in the new Super AFC-II will not be lost even if the it is disconnected from the vehicle battery power.RMP signal for air flow & pressor sensors can be adjusted in 12 points in 1% increments depending on fuel settings in +50% to -50%. Or the RSP can be set in increments of 200 RPM. Throttle opening duration: Adjustable by size.


INSTALLATION
For installation, connecting to 6 sensors such as the air flow signal, the throttle sensor, the rotary signal, ignition and the knock sensor.

SUPER AFC-II
Air Flow Setting -choose 12point
Air Flow Engine RPM -every 200rpm
Drive Voltage Circuit Safety -more stable
Display Monitor Adjustment -setting up display (air flow/pressure)
Display Color Blue:Standard model, Limited Edtion:White
Other Functions
-Knocking Monitor
-Digital Display
-Setting Memory function
-Warning function
-Password
-Lock function



[Edited by BoxerFlat4 - 2/4/2003 6:13:20 PM]