Engine Management Question

waterman17

All
I now have an Audi 80 K reg 2.0ltr 4cyl engine with CHELDAN PERFORMANCE stickers on it
Can someone enlighten me please what it is
Is it just stickers
Or
Is it something of relevance to do with the lumppy bit at the front under the bonnet
Cant seem to find any relevant info
Being of the female persuation it is above me
Aslo cannot seem to get the relevant Haynes manual

Fonz_2

Judging by google results I'd say Cheldan Performance is a car dealer in Stockport

Jzpop

http://www.haynes.co.uk/webapp/wcs/stores/servlet/CatalogSearchResultView?storeId=10001&catalogId=10001&langId=-1&pageSize=300&beginIndex=0&sType=SimpleSearch&resultType=2&stringValue=audi+80&searchTerm=%22audi+80%22