rb25 issues

[bvr463]

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]

anyone with advice that can help me?

[godzillarb]

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]

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]

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

[bvr463]

mechanical timing is dead on.
My wideband is reading correctly


VTC Plug?