RB25 Tuning Question. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

elemento1991 · 01-09-2011, 07:58 AM

Alright i'm a new guy to the Nissan platform. I'm looking to get an RB25DET 240sx. There is one close to where I live. The guy said he has a ROM tune + SAFC. I thought this was a one or the other type deal. I know subaru's used a tunable access port off of Cobb but I am unfamiliar with Nissan? Also I read that the SAFC tricks the ECU and doesn't actually reprogram it.

So basically...

-can you have both?
-Are there any cons to this?
-Are there any pros to this?
-Is the SAFC bad for the engine?

slideslidegnarslide · 01-09-2011, 08:19 AM

it does trick the ecu safc is just a boost controller for the most part yes you can have both with a stand alone like i have an avcr and power fc i mostly use the power fc to tune make changes to my car and use the avcr to change boost settings

sliddinsil8o · 01-09-2011, 08:26 AM

^^^

^^^^^

smelly240 · 01-09-2011, 08:30 AM

what computer is in the car that its got a rom tune... Chipping of the rb25 ecu is not worth the hassle (or price).

Generally the "rom tuned" rb25 cars are done with a Z32 ecu.

I have personally done 11 of these - 2 in R33 gtst skylines (both are also from PA) - the others are all done in 240sx.

I think you need to ask more questions to the seller.

01-09-2011, 07:58 AM	#1
elemento1991 Join Date: Jan 2011 Location: PA Age: 33 Posts: 32 Trader Rating: (0) Feedback Score: 0 reviews	RB25 Tuning Question. Alright i'm a new guy to the Nissan platform. I'm looking to get an RB25DET 240sx. There is one close to where I live. The guy said he has a ROM tune + SAFC. I thought this was a one or the other type deal. I know subaru's used a tunable access port off of Cobb but I am unfamiliar with Nissan? Also I read that the SAFC tricks the ECU and doesn't actually reprogram it. So basically... -can you have both? -Are there any cons to this? -Are there any pros to this? -Is the SAFC bad for the engine?

01-09-2011, 08:26 AM	#3
sliddinsil8o Leaky Injector Join Date: May 2005 Location: T3x@$$ Age: 40 Posts: 107 Trader Rating: (1) Feedback Score: 1 reviews	^^^^^^^^ __________________ **SIGNATURE EXCEEDS FORUM LIMITS....PLEASE READ THE RULES**

01-09-2011, 08:30 AM	#4
smelly240 Nissanaholic! Join Date: Oct 2006 Location: Philaburbia Age: 47 Posts: 2,137 Trader Rating: (4) Feedback Score: 4 reviews	what computer is in the car that its got a rom tune... Chipping of the rb25 ecu is not worth the hassle (or price). Generally the "rom tuned" rb25 cars are done with a Z32 ecu. I have personally done 11 of these - 2 in R33 gtst skylines (both are also from PA) - the others are all done in 240sx. I think you need to ask more questions to the seller. __________________ HREs on a S13 - check, 6262 - check, Girlfriend.... - nope

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01-09-2011, 08:19 AM	#2
slideslidegnarslide Zilvia FREAK! Join Date: Mar 2010 Location: philly area Age: 35 Posts: 1,408 Trader Rating: (29) Feedback Score: 29 reviews	it does trick the ecu safc is just a boost controller for the most part yes you can have both with a stand alone like i have an avcr and power fc i mostly use the power fc to tune make changes to my car and use the avcr to change boost settings