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Defeating the torque limit request on the Volvo 850 Turbo

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

Post by Beefsquasher » Sat Sep 21, 2013 9:53 pm

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?

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matthew1
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Re: Defeating the torque limit request on the Volvo 850 Turb

Post by matthew1 » Sat Sep 21, 2013 10:12 pm

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.
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1997 850 T5, MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace [gone]
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Re: Defeating the torque limit request on the Volvo 850 Turb

Post by hanzbe420 » Mon Sep 23, 2013 5:15 pm

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.

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

Post by Reys » Mon Sep 23, 2013 7:29 pm

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

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

Post by Beefsquasher » Tue Sep 24, 2013 7:54 pm

I will try it and report back this weekend.

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

Post by Reys » Wed Sep 25, 2013 6:42 pm

respect

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

Post by McBEAST » Fri Oct 25, 2013 8:24 am

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. :P

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.

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

Post by tightmopedman9 » Fri Nov 01, 2013 11:34 pm

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.

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

Post by hanzbe420 » Mon Nov 25, 2013 9:14 pm

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.

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

Post by Reys » Wed Jun 22, 2016 7:37 pm

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

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