RB25 N60 issues

[rb240sx]

I have an Rb25 series 1 with an N60 maf. I have a SAFC2 set at 2 in and 4 out with the cal set at 2 and add.

I am getting continuity between all wires to their respected locations so I know it is not a wiring issue...but...the car is throwing a code 12 and code 41. It also will not rev past 2500rpm but otherwise runs fine.

any idea's?

[rb240sx]

anyone?

[platez808]

just for clarification but is that the maxima maf?

[rb240sx]

Yes, The N60 is the purple labeled Maxima MAF.

I am picking up an N62 (Z32) MAF today.

[rb240sx]

I put an N62 MAF into the car and still the same issue. It will not rev past 2500 and I'm still getting a code 12 and 41.

[platez808]

are you positive you wired in the maf plug and the safc connections correctly?

[julio]

are you positive you wired in the maf plug and the safc connections correctly?

+1....When the car doesn't rev about 2,500rpms (limp mode), that means the maf isn't connected properly in one way or another.

[rb240sx]

Yea, I'm 100% positive. I ran a totally new set of wires just to make sure and bypass the original wiring and still the same issue. Even with the SAFC bypassed, the ecu still throws a code 12 and 41.

[rb240sx]

The SAFC reads the proper voltage and everything, I even have the proper voltage at the ecu but it still throws the code


what is a code 41? air temp sensor? I thought rb25 did not have one...

well, I just found out that I have an RB26 ecu in the car...now wtf do I do?..lol... my ecu reads BV / 23710 - 05v62 / MEC - r282 / A1 / 3705

[RustspecS13]

Well you need a RB25 ecu or a NA Z32/j30 ecu with nistune, or a twinturbo Z32 ecu- its close to working as is but should get a tune as well.

An Rb26 ecu doesn't have VTC, but does expect to see 2 mafs. Hence why it was cutting out. I didn't think it would run with a rb26 ecu on a rb25 harness....

~Alex

[rb240sx]

Well you need a RB25 ecu or a NA Z32/j30 ecu with nistune, or a twinturbo Z32 ecu- its close to working as is but should get a tune as well.

An Rb26 ecu doesn't have VTC, but does expect to see 2 mafs. Hence why it was cutting out. I didn't think it would run with a rb26 ecu on a rb25 harness....

~Alex

Yep, your right, the ecu does not have VTC but...anything can be done with a little bit of know how. I am using an SAFC with a z32 MAF set and 2 in 3 out with the cal set at 1 and 1. The car runs fine but it still doesn't run perfectly...it is still looking for the intake temp sensor and I'm quite sure that is why it's still running a little rough.

I'm not driving the car hard until I have the right ecu for it. Right now it drives, boosts and everything with the 26 ecu just the idle is funky.

[l0nestar]

You need either an RB25DET ECU (for direct plug-and-play) , or either Nistune or an emulator board with a Z32 (VG30DE or DETT) or J30 ECU.