I know lots of people slate these but have one on the car and it seemed to do the job well enough in 3 years of daily use, relying purely on the temp. gauge in the car.
Car is in bits and debating whether to put it back in or not.
Anyone have anything good to say about these?
I wondered if a bigger reservoir and bigger radiator would help it along but even in a daily commute in heavy/slow traffic, never had any hot running issues.
Car was chipped and running 8 or 16 psi.

 

They are good mate
You won't need a bigger tank but you could up grade the rad
I worked at pace for years years ago
The ones with 3 cores in them worked well
The ones with one core in them ( sierra cosworth ones) not so well
As the charge cooler unit could have done with being a little bigger