You cannot use a eBay chip with different cams as that chip is made for stick cams
Yes you can! Its been done and got gains. The cam opens the valve for longer and the chip richens the fuel mix so its better to have a cam and chip than just a chip!
In fact some ebay chip suppliers will supply different maps for specific cams so long as you tell them what you want and what you have. Mine cost me 40 for my ADY engine code and fast road cam, felt a lot better but never got it tested (why pay all that money for when you know it wont pull yer socks off). Khare got 138bhp with a cam, chip and box on his old 8v, we can argue all day about who's rollers and testing equipment it was but it was deffo an improvement on his in numbers and mine in feel.
The op might feel more as his car is not a lardy Mk3 which needs 170bhp to feel fast, let alone how many valves it has
