If your car is standard or you don't intend on doing any mods to the car then you won't reap the full benefits of having one installed and mapped.
They work well, but in my opinion are only an option if you have no access/interface to the tables in your oem ecu. You do get harnesses for certain cars which circumvents the loom splicing and can only me mapped by Dastek authorised dealers as the software isn't open source.
On my E36 M3, it worked well and got me to 234kw with fairly simple bolt ons. Fuel consumption was better and the car performed really well on topend...
They work well, but in my opinion are only an option if you have no access/interface to the tables in your oem ecu. You do get harnesses for certain cars which circumvents the loom splicing and can only me mapped by Dastek authorised dealers as the software isn't open source.
On my E36 M3, it worked well and got me to 234kw with fairly simple bolt ons. Fuel consumption was better and the car performed really well on topend...