I was told ages ago that the ECU was approved like many others at the time, after all R SPORT LTD are a Renault approved dealer so why wouldn’t people believe them.
Since then I have spoken to Renault Customer services and they phoned R SPORT for me and confirmed it’s not warranty approved. I have written to R SPORT asking for written confirmation that it doesn’t effect the warranty and stating they told me it was warranty approved on the phone (I know now it’s not approved but i cant wait to see their reply!!!!) Oh and Tom182 they can tell its chipped when they hook their diagnostics machine to the car, different ECU number and they can’t flash/update it!
I have driven a standard Cup and a R sport Cup and have raced a Cup (ktec exhaust) vs a R sport Cup and there is no difference at all, R sported Cup pulled a bit in third (higher limiter) and the other Cup then came back and pulled half a car when I stuck it in 4th....... Take of that what you will, oh and it was a full on Craggy esk gear change I did so nothing to do with my driving.
At the end of the day most 172s and Cups are in and out of the garage all the time I would think very carefully about fitting the chip to your car. Plus when its in for servicing you would have to swap it out and if you broke down you wouldnt be able to get it towed to the dealer with the chip in just incase....
If you want to spend 250-300 on a mod get an exhaust which wont null the warrenty on your whole engine just the bits back from the exhaust (which is nothing)
P.S longest post I’ve ever done.... you proud of me