im having trouble getting my site to the top of google, can anyone please help?

[john]

First thing i would say forgetting about SEO for a while - I don't think your website is good enough. It seems you have used lots of different font sizes on the home page which makes it look really cluttered...so even if you did get someone to the page I think they would be put off by the poor layout.
On your home page you have bullets like:
Volkswagen VW Remapping
BMW Remapping
AUDI Remapping
FORD Remapping
VAUXHALL Remapping
LAND ROVER Remapping
MAZDA Remapping
SKODA Remapping
SEAT Remapping
MERCEDES BENZ Remapping

okay so those are good keywords - but why not create a single page for each of them - treat them as individual products - that way you can also create individual campaigns on google adwords for each one - which should improve your ad quality - in theory reducing your costs. Also the keyword like audi remapping has more chance of getting to the top of the search engines.

Having said all that yoiu are going for highly competitive keywords here remapping is 0.71 on the keywords tool for competition. audi remapping is 0.83 - no doubt the others are really high as well. In a nutshell the chances of you getting to the top of the search engines or on the home page is incredibly low. you would have a bit better chance if you bought individual domains for each manufacturer and created seperate websites for each one - but obviously that is more cost and more time. Personally this is too competitive a field to be in and I would drop the whole thing and save yourself a lot of time and money.