thestocky Posted September 25, 2009 Share Posted September 25, 2009 Hi all, I have a question regarding the power difference between pre 05 (GT4) engines. I've seen a good wiki page which says which cars have different engine codes, but I don't understand how the extra power is achieved. Is the power a simple ECU change or are the engine components different at all? Thanks to any help with this query! Quote Link to comment Share on other sites More sharing options...
rtbiscuit Posted September 25, 2009 Share Posted September 25, 2009 post 06 engines used a different lower plenum post 07 engines used a completely new intake and head hence the bonnet bulge Quote Link to comment Share on other sites More sharing options...
martinmac Posted September 25, 2009 Share Posted September 25, 2009 The 06 car had the new rev up engine bud. The interior was also upgraded a bit. There is a full list of the changes in the FAQ section. Quote Link to comment Share on other sites More sharing options...
Beavis Posted September 25, 2009 Share Posted September 25, 2009 The GT4 was the first zed to get the 296bhp engine (previously 276 bhp). The main differences were revised pistons and different exhaust valve timing to achieve the extra 20bhp. I am sure there were a few other changes too. This engine came the norm for MY06 cars. Quote Link to comment Share on other sites More sharing options...
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