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ill get to my car some time tomorrow and ill take a look and perhaps share a pic

@Rusty Nuts what should i be looking for what should it look like? And is a daughter board like a nistune or something? Thanks for participating by the way need all the help i can

Here is a pic of the ecu numbers

@GTSBoy i see, well i hope the damage is not serious, sine i noticed the symptoms i havent been driving it, only turning it on after messing with it just to see if maybe i solved anything. Hope someone can let me know more about the ECU number i shared in my OP tho Thanks anyway G

@GTSBoy okay makes sense what your saying, but rb25det neo engines have alot of sensors that NA rb25 ECU cant comprehend, like boost pressure sensor, and all the timing sensors, like crank angle ext.. can an NA ECU still make a turbo rb25 run even though im sure these sensor readings are essential for idle let alone high performance. Dont forget the car was running amazing for the first week maybe 2. I had no problems what so ever and i was burning tire all the way through 3rd gear.

My mind is at a loss here, would like some light shed on this please and thank you Bought my self an rb25det neo wgnc34 to install on my a31. The engine came with an ecu and everything that is needed to get the car running. The engine is bone stock, i only have modified the exhaust, i have a 3 inch pipe all the way to the back with a magna flow muffler at the end. When the engine was installed the car ran great for 1 week then i started to notice some problems. Bad idle, loss of power, and sometimes the car will surge and would not let me pass 2.5-3 rpm. I changed the maf sensor and added new plugs, that got ride of the surging and the car is now running well, only problem is that its running super rich. The interesting part starts now. I though my car would need a tune and it should run fine. So i started to look at the ecu and the engine and doing research so i can get my self a compatible aftermarket ECU. While doing research i realized the ecu that is currently have on the car belongs to an NA stagea, is that possible? During the first week the car was getting into boost and i was feeling the turbo and hearing it spool and i can feel the car get into boost, is that possible with an NA ecu? Could my car be running rich because it has an ECU that is incorrect? The ecu number is 23713-0v711

Hello peeps, fresh meat. I own a A31 with an rb25 that came out of a stagea. Still trying to figure things out and im new to the car world. Teaching my self as i go and im sure yall will add value to my journey

Hello guys Bough my self an rb25det neo wgnc34 to install on my a31. The engine came with an ecu and everything that is needed to get the car running. The engine is bone stock, i only have modified the exhaust, i have a 3 inch pipe all the way to the back with a magna flow muffler at the end. When the engine was installed the car ran great for 1 week then i started to notice some problems. Bad idle, loss of power, and sometimes the car will surge and would not let me pass 2.5-3 rpm. I changed the maf sensor and added new plugs, that got ride of the surging and the car is now running well, only problem is that its running super rich. The interesting part starts now. I though my car would need a tune and it should run fine. So i started to look at the ecu and the engine and doing research so i can get my self a compatible aftermarket ECU. While doing research i realized the ecu that is currently have on the car belongs to an NA stagea, is that possible? During the first week the car was getting into boost and i was feeling the turbo and hearing it spool and i can feel the car get into boost, is that possible with an NA ecu? Could my car be running rich because it has an ECU that is incorrect? The ecu number is 23713-0v711