V70: - 2004 V70R having problems with chiptuning

2004V70R · Oct 29th, 2008, 20:25

Hello my name is Alf & I`m new on this forum. Was hoping to see if anyone here might have some experience regarding these issues.

I have a 2004 V70R AWD (manual transmission)which I`m having some troubles with after chiptuning it.

The problem is that it seems to go to lean. It performs like this both on midrange rpm & up towards top. It cuts totally and falls a sleep. Adding no power at all.

I`ve tried several programs from two different Chip manufacturers, it`s all the same.

When I remove the chip, the car runs like it should, and has 305 hp tested in bench.

I also have 3" exhaust from front to back.

I`m starting to wonder if it could be the petrol pressure regulator? I`ve understood from a mechanic that on this car this is not vacuum-controlled, but electronic. Is there anyone who has had problems like this?

Would appreciate any answers or tips.

Best regards
Alf, Norway

Alan M · Oct 29th, 2008, 21:30

If your car runs well as standard I would say its down to the maps you are trying. What maps are you trying?

Oct 29th, 2008, 20:25	#1
2004V70R New Member Last Online: Oct 29th, 2008 20:34 Join Date: Oct 2008 Location: Sandnes	2004 V70R having problems with chiptuning Hello my name is Alf & I`m new on this forum. Was hoping to see if anyone here might have some experience regarding these issues. I have a 2004 V70R AWD (manual transmission)which I`m having some troubles with after chiptuning it. The problem is that it seems to go to lean. It performs like this both on midrange rpm & up towards top. It cuts totally and falls a sleep. Adding no power at all. I`ve tried several programs from two different Chip manufacturers, it`s all the same. When I remove the chip, the car runs like it should, and has 305 hp tested in bench. I also have 3" exhaust from front to back. I`m starting to wonder if it could be the petrol pressure regulator? I`ve understood from a mechanic that on this car this is not vacuum-controlled, but electronic. Is there anyone who has had problems like this? Would appreciate any answers or tips. Best regards Alf, Norway

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Oct 29th, 2008, 21:30	#2
Alan M Senior Member Last Online: Jan 24th, 2023 07:05 Join Date: Dec 2007 Location: Cannock/Solihull	If your car runs well as standard I would say its down to the maps you are trying. What maps are you trying?

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