ok im new to fiat coupes, and very new to turbo cars, so my knowledge if non existant, but im after some direction and advice on some upgrades- would like to have an atmospheric dump noise, so what is the best dump valve i should be looking for? and best filter to buy? have just brought some better spark plugs bosch 4's, take it they will do the job? thanks for any advice
why atmospheric? Recirc can produce almost the same noise, especially if you have a cone filter. Atmospheric DVs can cause all sorts of problems with your mixture. The best DV for the Coupe is generally accepted to be the Forge DV006
Bosch are not the best plugs for the 20VT - you should get NGK BKUR6ET
