Jump to content
SAU Community

Recommended Posts

Hi there people just joined the site so hello ! I

I have just bought a r33 1995 and it runs well no bad idle etc I'm pushing out 347bhp and some times the car will cut out on full lock if you brake hard but only a couple of times ! on the dyno its in the lean zone just under 13 and hits just over 13 in places ! my apexi power fc is detecting knock ! it hits 60 and the engine light flashes .

The tunner I took it to says it needs a full map ! but the guy I bought it of had it mapped in November and I rang them and they gave me the figures over the phone and the car was running as it should . so my question is could it be the afm ? it just had a fuel pressure test and all was good so I guess that rules the fuel pump out and fuel filter etc ?

I run high octane fuel any help would be great thanks

Link to comment
https://www.sau.com.au/forums/topic/466118-running-lean-power-fc/
Share on other sites

Sounds like the tune needs work. Its much easier to trust someone face to face then over then phone.

The only way to confirm is to take it to a 3rd party and check AFR's there. If they match the tuner that is saying it is leans figures then you know thats the one to go with. If it was me, I would be getting it re-tuned. Lean tunes dont last long

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Ok thanks..that was my second question if i can somehow bypass this even with Nistune(that is all i have right now...aparat from stock ECU. So with some aftemarket it can by "bypassed" or make it work?  I know there is Link or Haltech (mainly used). We have ECUmaster here so i will gather some info about it.
    • Yes. You will need to get the original boost sensor and wire it in. That is.... if you plan to use a stock ECU - even a Nistuned ECU. The Nissan ECU will not operate correctly without it connected. And yes, it will do annoying stuff like you are experiencing. You will almost certainly be better off with some aftermarket ECU, than trying to hunt down rare sensors.
    • Ok so ABS/TCS is "not" the problem. Yeah i know now about the ABS with Nistune(i told that to the Nistune guy) but iam not 100% why or why i dont have ABS. ABS cube is in the engine (always has been) but i had braked couple of times rly hard and brakes just locked and scream. Does all Skylines have ABS cube? That boost sensor https://www.sau.com.au/forums/topic/367633-wtb-r34-gtt-turbo-pressure-sensor-pics-inside/ Is this it? I need to ask but i have a picture of engine bay and i do not see that (100% is not in that place) If i do not have this the car can do what mine is?(cutting around 4000 rpm) Here is the pic of my engine bay(only one i have) BUT i think i dont have that cuz loom was used from my RB20DE NEO and i know (obviously) that it does not have boost control or any wire to that...) so maybe that is the problem? (i dont know for 100% if that car where the engine is from had that)...but i dont have the loom from that
    • I'm with you here. It's either loom has an issue, OR, injectors are not functioning properly. It could even be they're just constantly dribbling, hence the wet, but not firing.
    • Depending on how long the car sat it is very possible for injectors to be stuck open or closed, I'd get them cleaned and flow tested. Other than that, obviously when the loom changes and the car doesn't start any more....the loom is suspect so some tracing / comparing may be required
×
×
  • Create New...