Search the Community

RB25DET in GTS4 R32 conversion Hello all, As you can tell I'm new to this forum but have used it as a reference for many years and value the opinion and experience of the posters. I have recently purchased an R32 GTS4 and I'd like to swap the engine from a Stagea RB25DET Neo. I have read lots of posts on here and I've saved the pages so I should be able to get over some of the wiring issues. The mechanical side seems long and tedious and messy but as far as I can tell, reasonably straight forward. I have a few questions though: Which ECU would suit the engine best, I've heard people favouring the RB20 ecu because it can be Nistune'd, Im thinking further down the line I will do this but I'm tempted to just use the ecu that comes with the engine? Are there any things to be aware of when doing this conversion, for example different years having different ecu pin outs etc? Would it be quicker to install an earlier RB25DET (non Neo) to save some headaches later? - Is it an easier/quicker conversion? I believe (don't quote me) that the full wiring and induction manifold and ecu can be used on the NEO engine, with some minor adjustments to fuel rails and idle control module (IACV) Is this more or less correct? I have recently restored an american muscle car and carried out a build log, I can start one for this car and upload it once completed as a guide or how to, if that suits or is required. Thanks in advance for any guidance.