rb25 issues - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

bvr463 · 11-11-2012, 07:29 PM

i have a rb25 series 2 inside my s14. My car is dodo on the low end, but is fast after 3000 rpm. Thought my timing was off, just did it today and it is spot on. If i set my timing to 15* my car runs like major dodo, car will go into boost fast, but dont go NOWHERE

Oh if i take the safc out of circuit, the car will run like crap too.

Does anyone have any suggestions? Please Help me, i getting fustrated and about to send car into the ocean.

CAS
Motor wiring
ecu
Maf
Knock Sensors
etc....

bvr463 · 11-12-2012, 04:27 PM

anyone with advice that can help me?

godzillarb · 11-12-2012, 04:35 PM

Do you have an air to fuel gauge? What is it reading?

My guess is that it's either very rich or very lean under 3k. Also, pull your plugs and let us know what they look like.

i_zra · 11-12-2012, 05:14 PM

Check the vtc plug my car had no low end power when I first swapped it, I forgot to give it power after I did it ran a lot better, hope it works good luck.

*fliprayzin240sx* · 11-12-2012, 08:25 PM

Have you checked the mechanical timing to make sure the belt isnt off by a tooth or so?

bvr463 · 11-12-2012, 11:24 PM

mechanical timing is dead on.
My wideband is reading correctly

VTC Plug?

11-11-2012, 07:29 PM	#1
bvr463 Zilvia Member Join Date: Sep 2010 Location: kennewick, washington Posts: 192 Trader Rating: (2) Feedback Score: 2 reviews	rb25 issues i have a rb25 series 2 inside my s14. My car is dodo on the low end, but is fast after 3000 rpm. Thought my timing was off, just did it today and it is spot on. If i set my timing to 15* my car runs like major dodo, car will go into boost fast, but dont go NOWHERE Oh if i take the safc out of circuit, the car will run like crap too. Does anyone have any suggestions? Please Help me, i getting fustrated and about to send car into the ocean. CAS Motor wiring ecu Maf Knock Sensors etc....

11-12-2012, 04:35 PM	#3
godzillarb Zilvia Junkie Join Date: Jun 2005 Location: Destin, FL Age: 38 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	Do you have an air to fuel gauge? What is it reading? My guess is that it's either very rich or very lean under 3k. Also, pull your plugs and let us know what they look like. __________________ INTENSE POWER RIPPED ME OFF

11-12-2012, 08:25 PM	#5
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Have you checked the mechanical timing to make sure the belt isnt off by a tooth or so? __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

11-12-2012, 04:27 PM	#2
bvr463 Zilvia Member Join Date: Sep 2010 Location: kennewick, washington Posts: 192 Trader Rating: (2) Feedback Score: 2 reviews	anyone with advice that can help me?

11-12-2012, 05:14 PM	#4
i_zra Join Date: Nov 2009 Location: oakwood Posts: 44 Trader Rating: (0) Feedback Score: 0 reviews	Check the vtc plug my car had no low end power when I first swapped it, I forgot to give it power after I did it ran a lot better, hope it works good luck.

11-12-2012, 11:24 PM	#6
bvr463 Zilvia Member Join Date: Sep 2010 Location: kennewick, washington Posts: 192 Trader Rating: (2) Feedback Score: 2 reviews	mechanical timing is dead on. My wideband is reading correctly VTC Plug?