NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   S4 TO S5 (https://www.nopistons.com/2nd-generation-specific-17/s4-s5-74371/)

thatdude88 06-14-2010 09:32 PM

Hey Guys,

How hard would it be to swap out my s4 motor for a lil fancier s5 motor? I could use as much info as possible cost elntronics and wiring cpu? I was wondering if any one has done this i understand that the basic motor and all acc are the same i know it would be mostly wiring and matching the engine harness and cpu anything would be helpful thanks

thejallenator 07-20-2010 02:11 PM

turbo swap or just na swap? either way its the same process for the most part. if its na you only need to get a s5 keg. thats it. just slap her in and use everything off your s4 onto the s5 and your good to go. if your doing a tii swwap then all the electronic parts need to be s4 unless you go stand alone or feel like attempting a wiring mess that will make you wanna kill yourself. i did the latter of the two and im running s5 turbo and intake with s4 tb so i could use the s4 tps still. and its a beast, when it wants to rrun right.

sleeperRX7 08-14-2010 05:32 PM

send in what you have now for custom work! then go stand alone and try a small fifty shot of nitrous. keep the sleeper look alive..............five is alive

vanhalen 08-27-2010 11:25 PM

S4 and S5 EC pins are slightly different. Not big a deal to rewire . You need a S5 harness for the elec. controlled OMP . If you just unplug it, it goes in limp mode if you use an S5 ECU.


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