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

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