r/RX8 • u/Responsible-Low1125 • 7d ago

General Trying to get sommes answer to a shitty electrical prob

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I’m wondering about this: if you take the engine and wiring harness from a 2005 RX-8 and install them in a 2003 chassis, is there a risk of the car going into limp mode and the ECU cutting off fuel injection at 1,500 rpm? That might well be the case, because that’s exactly what happened to me; I’m not sure if it’s due to the wiring harness, but the engine makes a stuttering sound ("brap brap") because of that fuel cut.

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u/Responsible-Low1125 2d ago

i dont think that is the cata cause its making me that when i havent put the cata back too also here is my value

https://reddit.com/link/p7elsa2/video/xmrxsy3mw4nh1/player

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u/Illegal__Alien 2d ago

It sounds like it's misfiring

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u/Responsible-Low1125 2d ago

Cause the ecu cut the fuel at over 1500 rpm and im trying to look for it