Got problems with my Silvia.
Basically it’s intermitently running lean, it does this weird thing whilst accelerating sub 3k RPM it’s fairly laggy and feels down on power and the exhaust note almost sounds like a stuttering but really quickly, only noise I can liken it to it sounds like a Golf DSG on gear change but it makes this noise up to 3k.
After 3k it goes like a scolded cat
I’ve checked and pressure tested the pipe work.
Replaced Z32 AFM for a brand new one (From Nissan)
Lambda sensor has been changed multiple times.
On WOT it’s hitting 11.5 afr then later in same journey will max at 12.3
The Pump is hard wired.
Anyone got any idea’s of things to check or replace?