Adding our Tune Pedal P13702, on your petrol 523i 3.0 204 hp will make your engine responds more spontaneously and more directly. This throttle tuning system optimizes the response time of your engine by eliminating the latency . The result is that the power of your engine is released faster. This way your acceleration is much more direct. This pedal box is ideal to pass vehicles easily.
Instructions for DIY installation should be more detailled and specific for every single car model. Simple things as intake air filter position makes wiring more difficult in my fabia than in volks.
Fast delivery, had an initial issue with one of the connections, but 1 phone call and a technical email later all resolved., I have tried racechip previously but I am more impressed with this company.
You should send a tracking number. I ordered as express and it took 10 days to arrive and i couldnt track it.
I am very satisfied with the order process, customer support and i will recommend yo others. Many thanks