You can defintely notice a difference but nothing to drastic. I used to work with a lad who had a 1.8 16v Renault Clio, and he had one of these cheap chips, and said he did notice a difference but only really on top end, but he later bought a superchip to replace his current chip in his ECU, so on some level they try to claim they give the same increase in BHP as a superchip, when infact they do increase performance a little because they are releasing more fuel so mechanically, they will do something.
My mate has one on his punto which has a resistor dial to turn it on or off, and ive driven it and compared the difference in it, when its on and off and there is defintely a much torquer gear change and top end, yet not so much bottom end, however his is only a 1.3 sporting, so i can imagine placing the mod on a 1.8 isn't going to do a hell of a lot. I have never considered to buy one, until now, basically just for the fact its £2.00 and to give it a go for a laugh, if its more thirsty at the same performance then will simply take it off. lol but once i recieve it i will put some feedback on here
