Defeating the torque limit request on the Volvo 850 Turbo

Beefsquasher · Post by **Beefsquasher** » 21 Sep 2013, 21:53

So what I'm gathering from reading this thread is that cutting the wire does nothing, and you must apply somewhere around Ubat to keep the ecu from limiting torque?

Post by **matthew1** » 21 Sep 2013, 22:12

Beefsquasher wrote:So what I'm gathering from reading this thread is that cutting the wire does nothing,

True.

Beefsquasher wrote:and you must apply somewhere around Ubat to keep the ecu from limiting torque?

Don't know.

hanzbe420 · Post by **hanzbe420** » 23 Sep 2013, 17:15

you can grab stock ecu's at the junk yard easy... to test those. or just test yours if it blows up get 1 from a junk yard.

Reys · Post by **Reys** » 23 Sep 2013, 19:29

seems no1 wants to take the first swig, hanzbe420 what about you?

Beefsquasher · Post by **Beefsquasher** » 24 Sep 2013, 19:54

I will try it and report back this weekend.

Reys · Post by **Reys** » 25 Sep 2013, 18:42

respect

McBEAST · Post by **McBEAST** » 25 Oct 2013, 08:24

As long as I've owned my volvo I've kept looking into this thread for information, and everytime I do someone says they'll report in a timely manner.

I believe I've seen a successful implementation of this on another volvo community. Has anyone else seen one? I know Jimmy57 claims success but no one can replicate his results.

tightmopedman9 · Post by **tightmopedman9** » 01 Nov 2013, 23:34

Wow I'm surprised you guys are putting so much thought and effort into this whole thing, even cutting up your ECU harness! You can simply grab a M4.4 ECU (from a 97.5-98 S70, V70, C70 or 850) and program the boost limit and ignition retard by shift as you like.

Check out the thread I created on VS, 'Tuners Rejoice! Free Tuning For M4.4!'. The thread is pretty long but if you follow the Wikia link you should get a general idea of what is going on.

With just a simple VAG-COM cable, a M4.4 ECU and a 13.5V+ power supply you can modify any ECU parameter you'd ever want to, and more!

There is a 'Vehicle Speed threshold for boost reduction on gearbox signal' value that from the factory is set to 10km/hr. Set this to 0 and you'll be burning tires all day.

The other relevant map is 'timing retard on automatic transmission gear shift'. This is a map that specifies the amount of timing retard, at a given RPM, when shifting. You could reduce this map, but I would recommend being wary off too little ignition retard, it might shorted the life of your transmission.

hanzbe420 · Post by **hanzbe420** » 25 Nov 2013, 21:14

so whats up people any news lol haven't been able to go to the junk yard yet but i am going within a week.

Reys · Post by **Reys** » 22 Jun 2016, 19:37

Bump, Jimmy, Northern lights, Matt: would like to figure out if this mod is one worth trying, there has to be someone out there who has it currently running with this setup, if its possible

Defeating the torque limit request on the Volvo 850 Turbo

Re: Defeating the torque limit request on the Volvo 850 Turb