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d-macs13 · 11-06-2012, 02:22 AM

Ok i just helped my friend swap a series 1 rb25det into his s13, and it will start up and idle fine but will not rev past 2500rpm I can't figure out why it's doing this!

1. We cleaned the maf.

2. Checked for boost leaks and there were none to be found.

3. As for the wiring we bought a brand new pre-made harness from (Wiring Specialties.com)

The only thing that I can think of is that the maf is bad??? And the ECU is for a Series 2 Neo Rb25det and we have a Series 1 Rb25det with a Series 1 Harness I don't know if that will make a difference or not.

Please Share Your Thoughts Guys!

11-06-2012, 02:22 AM	#1
d-macs13 Join Date: Mar 2009 Location: Texas Posts: 42 Trader Rating: (0)	RB25det in limp mode please help! Ok i just helped my friend swap a series 1 rb25det into his s13, and it will start up and idle fine but will not rev past 2500rpm I can't figure out why it's doing this! 1. We cleaned the maf. 2. Checked for boost leaks and there were none to be found. 3. As for the wiring we bought a brand new pre-made harness from (Wiring Specialties.com) The only thing that I can think of is that the maf is bad??? And the ECU is for a Series 2 Neo Rb25det and we have a Series 1 Rb25det with a Series 1 Harness I don't know if that will make a difference or not. Please Share Your Thoughts Guys!