As it says above. Run on my car for about 8k and worked faultlessly.
No box, but supplied with fitting instructions. Unfortunately when I was removing it I broke one of the surrounds to the plugs. It still fits perfectly and won't move or pop out.
Comes complete with a blanking plug to return car to normal if you wish.
TMS Link gives figures etc. -
http://www.thorney.ms/tuning-box-template-2151.html
These retail at £500.
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