Antilag/revlimiter Rb25Det Series 2

[W0rp3D]

It is nothing like anti-lag

Unless it somehow magically works by the shwartz when you change gear or get off the throttle

well as far as i understand antilag (as the name suggests) makes positive pressure when standing still, there is also the flat shift function like rally cars have but the basic function of antilag as far as im aware is to make boost when the engine is not under load, the description on the web site says it does.

I have also heard ppl in here say that it is a "soft limiter" which i believe will not make boost and is much less likely to hurt the turbo and engine like antilag does, i was looking for something like that not long ago but was informed that there was nothing after market like that, its either antilag or nothing.

[zebra]

Basic explanation

http://en.wikipedia.org/wiki/Antilag_system

[R33 Eddy]

I've heard that running the engine super retarded on idle can infact spin a turbo like jet. (not sure if any one tired it). How ever once the car's driving the shaft speed drops back to normal.

sure can i had my timing out neg 30Degree (hoping due to a stuff CAS) and i could hear the turbo spinning like it was spooling onto boost at idle.

[W0rp3D]

Basic explanation

http://en.wikipedia.org/wiki/Antilag_system

OK let me re-word my last post, is this a launch control that that is kinder to your engine and turbo? Thats what Im looking for and for under 230 posted I would grab one if it is.

[zebra]

Probably worse for your engine than a straight hard ignition cut.

None of them are particularly kind, hard cut will break oil pumps in RB's and mega ignition retard will burn shit

[W0rp3D]

Back to the drawing board then!

[Legionnaire]

Proper antilag adds fuel to keep turbo at whatever boost you want it to. It's an afterburner basically, and is often accompanied by either auxiliary air intake device, kinda like IAC valve, or means to keep revs down with partly open throttle when AAC is not allowed, i.e. rotational idle. It also allows smooth transition from antilag operation (retarded timing and lots of fuel) to a normal engine operation and provides necessary means for engine cooldown after its use, either by additional fuel or by pumping air through the engine (cuts one or more injectors for several engine cycles).

Proper launch control is even more complicated, it may include antilag, and bases its operation on speed sensors and tries to supress wheelspin (that's advanced, closed-loop launch control), or has preprogrammed rev limiter(-s), fuelling/ignition, BC solenoid duties and box shift points for given set of conditions, like tires, vehicle weight distribution, ambient temperature, etc and is established during thorough testing, optimised for maximum acceleration in that particular conditions.

The device we're discussing here is much more simple, it's a piggyback that fools ECU, delaying or modifying CAS information en route to ECU so that ignition and injection parameters calculated by ECU are applied to the engine later than they normally should, so main engine management events are retarded. This usually results in hotter EGTs, and that's why turbo gets spooled. Side effects are overheated exhaust valves and in extreme cases head, exhaust manifold, turbine wheel and housing, good hammering on turbo bearings, inefficient fuel consumption. Not sure how exactly CAS+AFM driven systems respont to devices like this one, somebody with Nistune should probably take logs and see what's going on there. Maybe it will give a clue as to why it doesn't work so well/work at all with SII CAS.

[Daboss]

Are u sure there is no pin on wire 52???

Z32 and rb25 both series have the same pinout and they all should have pin 52 as pin 2 on the CAS.

Ill check the colour of the wire in 10 when i walk past my drifter with series 2 25

Positive. There is no wire from the loom to pin 52 on the ecu of both our series 2 rb25det's, the next option is the pin 42, I think. It is labeled as the same 1 degree as the pin 52, so that is the wire we were spliced into. Dont know if that has anything to do with whether it works or not. Would appreciate anyone who has a rush racing or aftermarket launch control/antilag installed on a series 2 working to chime in.

[355GTS]

Hey Daboss, did you ever end up getting the Rush Anti Lag Control working? I am about to buy one for my 32 GTR. I noticed on some other forums they reported that people using the APEXI FC have had issues making the bee-R work. Something to do with earthing.....

I am going to give it a go anyway.

cheers.