Been driving a re-mapped 406 Coupe 2.2 HDi past 17 years. I'm not a 'floor & redline it' type of driver but I do like a car with good pull/torque as it's this that gives the feeling of speed and throws you back in your seat IMO.
Having just bought a 156 THP RCZ (Mark I, 2010) I was pretty happy with it's performance (for me) so wasn't really interested in getting a full ECU remap, added to the fact we were in Covid so was gonna be difficult to arrange anyways. Also I was not too keen on suddenly & greatly increasing the 'strain' a fully fledged remap might put on a 90k miles 10 year old car that appeared to be running very very well for it's age.
So I decided after some research to go for a Racechip. Not for the increase in HP (+19HP) but for the increase in torque (+48 Nm). Decided on the standard Racechip S as I reconed for the money £119 it was the best value and wasn't too much of an investment if it didn't work out for me.
Installation was simple, it connects to the boost sensor on the intercooler return hose and the MAP sensor under the airbox.
Been using it a week now on setting No. 4 (it has settings 1 to 5 with 3 being the default) and I have to say it does exactly what I want from it... a boost in torque and a noticeable faster driving experience.
For some who are into dyno's & absolute horsepower gains it might not suit but i'm happy with my results for the small investment I've put in.
Location of the 2 sensors (Boost & MAP) you need to connect to with the supplied Racechip wiring harness.
Some photos of the finished installation