a question for u guys i have a mate with a wolf 3d for a rb20 for slae can i have changed for my ca18det or will it fit with out mods any ideas

What model is it?
Personally I wouldnt bother I would buy a power FC for it or get a dr drift computer done for it as you wont modify it much after its finished I assume

i wouldnt bother with wolf unless its fairly cheap and you can tune it yourself, i have one and their not user friendly and take longer to tune , they can produce good smooth results but you have to pay for the time to get it set up properly

x2 i didnt think wolf's were very good, imo your going about it the wrong way because unless your mate wants $10 you could have bought another ecu like an adaptronic or microtech which is better and easier to tune for another say $200. Its alright buying something like that cheap but the final layout of money it has cost you will still be a fair bit by the time you have stuffed around converting it to a CA18det. If you dont want to spend much keep your eye out on the forums and just buy an ECU with Loom to suit CA18 its probably going to be a little more at first but you will save in the long run

GL with it

and warning if you buy a microtech and its not for your specific engine it will cost you $350 to get it changed as thier factory set go haltech or adaptronic sounds good to!