Quote Originally Posted by colintf View Post
Hi 505,

get the tyres sorted and then see what its like.

As Peter said, don't worry about the flickering warning light - most of them do that.

When was it last properly serviced? And where are you? Anywhere near Klaus in Bremen? You could compare 505 to his 260 then.

Other end of the country to Bremen. 505 has a full service history, due an oil change now. I can't imagine a 4.6 would be down on power after 45.000 miles. You do have to press the pedal down true the carpet to get max power but it's still lethargic. Maybe I'm just spoilt. My pickup has a 5.4 with 300hp and the Jag has a 4.0 supercharged with 370hp.
I'm looking into better flowing heads. Most of the massive power increases we've been seeing over the last 10-20 years has been down to better understanding of flow and the resulting better heads. If I find something I'll let you all know.
Ed