Re: Do you need a new tune?
To be honest, i think a new tune would be best. Every engine runs differently, no engine is exactly the same. I understand your concern about want a fresh start but i dont think going for another oem block is greatest plan. You said you wanted to build a block over time, well with the money an oem long block will cost you can buy a fully built forged short block and maybe have some left over money. Use that money towards built heads. No sense is have 2 oem engines that could quiet possibly fail for the same reason. If i were you, i would save my money and put it towards a build engine. Keep driving on the current engine until it fails. Who knows, it may not fail. If thats the case then at least you wouldn't have spent the money on an engine that you aren't going to use.