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R33 Running Lean All Of A Sudden

and3_3

By and3_3,
in Engines & Forced Induction

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and3_3 Proficient

and3_3

Posted
Posted

Ok, i noticed on my narrow band afr gauge its running a noticeable difference leaner, not dangerous just questionable.

It has a tuned power fc and all supporting mods, i also noticed it after i changed my oil today (it shouldnt make a difference i know but it was the last thing i did to my car).

Other things, i have been putting octane booster into my car to stop it knocking as for some reason it was tuned for 100 octane (running 98 ultimate), although i have been doing it for a while now and should have made a difference before.

The car feels the same although my clutch is in need for serious replacement and is slipping bad so i havent been able to take it for a hard drive.

I also cleaned the air filter and AFM on monday too.

Perhaps my O2 sensor is playing up? Or the gauge is playing up? Or maybe my car is running leaner?

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https://www.sau.com.au/forums/topic/246442-r33-running-lean-all-of-a-sudden/
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Mr_GaZZa Rising Star

Mr_GaZZa

Posted
Posted

so many questions mate,

u'd notice perfomance increasing if your running lean ' lol killed mine but was real quick '.

my mates got one of them AFR gauges... pretty average in terms of any sort of REAL/USEABLE INFO.

if ya worried get a dyno run, they can telll ya

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