Transbrake 2 Step Using Factory Computer

[Ralph Wiggum]

  On 02/02/2012 at 8:10 AM, Paulie2256 said:

Pretty sure that won't work. Won't it just retard the ignition causing too much fuel in the cylinder and flames out of your exhaust? Thinking a proper system would need to talk to the PCM and cut fuel and spark not just spark.

Maybe they can hook that thing up to coils and injectors.

You need spark cut only. You need the fuel in the exhaust too ignite and spin the turbo up. Im working on this with a WOT BOX, but Im having an issue with the car going into a loss of spark induced limp mode. I need too do some more logging too find out what going one.

The pop pop pop and Turbo spooling up too 9/10lbs @ 3500 on the limiter is pretty cool tho

[Dillz]

Well can you hurry up?

[Ralph Wiggum]

What makes you think I would share the solution with you? You run off too the land of the Cardigan and now come crawling back??

[Dillz]

Yeah we're on the same team now. All for for one.. etc.

[Paulie2256]

  On 02/02/2012 at 11:24 AM, Ralph Wiggum said:

You need spark cut only. You need the fuel in the exhaust too ignite and spin the turbo up. Im working on this with a WOT BOX, but Im having an issue with the car going into a loss of spark induced limp mode. I need too do some more logging too find out what going one.

The pop pop pop and Turbo spooling up too 9/10lbs @ 3500 on the limiter is pretty cool though

You mean something like anti lag? Is this what you guys are trying to achieve?

I thought the purpose of this was to just have the revs sit at a set rpm even if the pedal was at the floor kinda like launch control in fg.

[Ralph Wiggum]

Antilag generally refers too keeping the boost up on shifts in a manual cars,

I Cant see the point of a two step in a stalled auto if the car doesnt build boost while up on stall?

[Paulie2256]

But it's kind of the same principal with the timing and such right?

One just pops when off throttle and the other pops at a certain rev limit?

[Ralph Wiggum]

  On 02/02/2012 at 12:18 PM, Paulie2256 said:

But it's kind of the same principal with the timing and such right?

One just pops when off throttle and the other pops at a certain rev limit?

Que'?

You can only build so much boost on retarded timing alone. A trick for pulling timing on the two step is to use a resistor and switch too send the cylinder heat temp sensor value into a very high/low range and adjust the timing compensation accordingly (ie retard the shitter out of it) this will help build boost. Since the OP's car is running a c4, if a manual tune was installed and the wrining for the clutch switch installed this could be use too activate the factory neutral/clutch in rev limit.

[Ralph Wiggum]

^ am yet too try the resistor method on my car. Its on the list too try out but its a long list

[Paulie2256]

Sorry I dont enough about this so won't keep going or I'll just confuse myself and anyone else reading.

Thanks for explaining it. Let us know how your testing works out.