hey everyone is there anyone in here that has experience with tuning your xc 70, its a 2.5 with a turbo charged gas engine and do you know anyone thats really good at it, i live in denmark on sjælland

 

I've used

https://hiltontuning.com/

 

plenty of ECU tunes available for turbo engines. Just google something like Volvo ECU tuning etc and you can compare various products. Personally, I'd stick with a true ECU tune where the vendor provides new boost/fuel/spark mapping software for your car's ECU vs products that fool the boost control circuit. The next thing to be aware of is that allowing the turbo to produce more boost means more heat so there's a balance to what other mods need to be done to maintain reliability. If you start adding more than say 30-40 HP, then you'd want to consider a bigger intercooler (to lower the intake air temperature), a bigger downpipe (to let the hot exhaust gas exit the turbo faster), use a product like Water Wetter to make the radiator more efficient. Last thought is different Volvo models use different size turbos (as in pumping capacity not physical size). If your car is a LPT "low pressure turbo" like a 2.5T model, it has a smaller turbo designed to spool quickly for good low end driveability where the high pressure turbos (ie the T5) have a bigger turbo for more air volume/boost at speed and the R models have an even bigger turbo. for the 00s vintage Volvos, most of the turbos are Mitsubishi TD04s which are numbered by the turbo's capacity. ie a 13T or 14T is the smaller LPT, the T5s use a 16T and you can bolt in or rebuild the TD04 to use the components from an 18T or even larger. So the bigger the turbo, the more aggressive the tuning program can be. If you have an LPT engine, I'd say +30 HP is a reasonable expectation. for a HP turbo, its probably like +50 HP before you'd need to do other modifications to get any additional HP. Don't forget that as you add boost your also going to squeeze the air/fuel more so running a high octane fuel is a must - in other words you'd need to buy the best premium grade gas available at the pump.