I have a copy of the first ever Max power. It has a purple Pug 205 with a big bodykit on it!
I think it lost its way. When it came out CCC and Fast car were proper tuning magazines, Max power was the first to feature more on bodykits and stereos and stuff. It came out just at the start of the era when chavs would gather in retail parks with their Novas stuffed with 'I.C.E' so a surge in popularity was ensured. Now that these folks have grown up that lifestyle is fading.
The cars it featured towards the end were not the sort of thing you could do yourself. Most were cars flung together by tuning companies to show off their stuff rather than something some guy had done in his shed after work using bits from the scrappy and lots of thought and hard graft. Anyone can 'build' a cool car if they have enough cash but a car built with thought and good ideas will always look/sound/drive better. Max power were not overly concerned with that! Far less effort required to feature the latest car from XYZ tuning and sell them an extra page of advertising at the same time.