If the box of tricks increases the rev limit - warranty void.

I think some remaps can improve performance and economy, however, not at the same time.

Factory maps tend to be nowadays to meet emissions criteria, tests and work in many different circumstances which strangely doesnt always equate to the best economy, some optimisation of how the cars fuel and the ignition can potentially bring some economy gains it seems but only on smaller throttle openings, once you add more boost to make significant power gains more fuel must be injected to go with the extra air so you may get another 30 bhp of power but the engine does more work and therefore needs more fuel to do it, all the map has done is given the engine the operating parameters to use more fuel that it couldnt do before as it hit its maximum earlier.

Overall, some drivers may see an improvement with a well developed remap even with more power but it depends how much they use the additional available power.

Anything that tricks the ecu into over fueling is a bodge that probably wont make any different to power but may damage you engine, will certainly kill your economy if it is constantly thinking it is effectively on choke.

My Saab 9-3 Aero I had done didnt seem to change but it is difficult to tell unless you keep detailed records, there are so many factors that affect economy, you would need to be pretty dilligent about recording it, anyway, what kind of sicko remaps for more economy ?

Okay lets say your gearbox goes pop

Do you not think that a quick scan of the ECU won't show up any funny business?

Its fairly easy to tell if an ECU has been remapped, even if you've used a handheld unit (like bluefin) and then restored the original map.

If you want to keep warranty, keep it stock - if you want more power change the car. Harsh I know but thats the short of it. Manufacturers are tightening up on warranty claims, especially on sporty models..

I can't, it is not about the money but about the image... I work with Germans and Dutch and I can't have a car that is more expensive or "better" than my customers, sounds stupid I know but you wouldn't believe the kind of bks I hear from them, just to quote on time we were in a meeting and the Italian supplier came in a 575 and our customer quickly made the comment "I guess we are paying you too much"

So the fact is, I would like to get more power from my Insignia, it has only 1500km so I don't want to void the warranty... I guess I have no choice and keep stock

Just been flipping through this lot and it amazes me the amount of people that can criticize a product they haven't even tried out!
Do these people leave reviews on Amazon for stuff they've never owned?
To be fair to them, some of the uninformed drivel they come out with will surely fool no-one but the most naive...
I can only speak for my experience with Racechip as I don't personally know anyone else that has had one fitted, much like the critics on here.
I liked the performance of my A3 Audi TDI Sport, but didn't like the suspension.
I swapped to a Golf 1.4TSI and fitted a middle range Racechip.
Now my Golf performs much as my Audi TDI but without the stomach-ache inducing suspension.
End of story.