Re: Is £440 about right for getting an engine remapped.
If the engine is going to be relatively standard, then a unichip is probably overkill. But, for the price, that is very good. My car ( 3.2 inlet manifold & injectors, 2.5 exhaust manifolds, 2.5 engine management) arguably needs the Unichip, as the ECU cannot be mapped via ODB anyway so getting it remapped is a bit of a PITA, I would have to go to London and get Red Dot to do it, and even then they would probably have to write something custom for me rather than just tweaking a generic map..
The added benefit of the unichip over the standard management is that it is mappable past the 7,000rpm standard rev limit. In the normal management system, you can only set injection time and duration and ignition time values for the 0 - 7,000rpm rev range. If you plan to rev over the 7,000rpm limit, you can do one of two things - map the car ideally up to 7,000rpm, and accept it will run less than its potential after 7,000rpm; or set the ignition and injection timings to be ideal for the over-7,000rpm rev range, then calculate from these what the values at 7,000rpm need to be for the management to run these figures when you go over 7,000rpm. Either way, you will be running at a disadvantage on standard engine management compared to the Unichip - but you need to ask yourself how much difference this will make on the road on a 1600 engine that is completely standard otherwise - probably not very much.
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