Originally Posted by
960kg
I had a `98 model T4 for 3years which was the UK spec "CD SE"........the CD has all the options as standard as it was top of the range but the base was an SE. The CD`s of Volvo`s in that era were all top of the range as was my 960 CD.
They are not really rare but there are less around now.
In essence the 1855T4 does not like anything done to it as it is so highly strung to start with to get 200bhp. All the standard parts are good for 250bhp, the simplest way on a standard motor to get more power is turn up the actuator five turns from the basic setting and you should get around 237bhp for nothing but it will only do around 28mpg!
You can spend money to get more but as they say the first 20bhp costs £10 but the next 20bhp will cost hundreds?
With the ECU mapped the companies that did do it only went to around 240bhp.
Best not to use a dump valve or an MBC as this motor has no cut out or safety feature as the Phase 2 2litre does. Just use the std. early boost solenoid and not the later one, same as T5.