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John Summergreene
Tinkerer
N.S.W.
v8

Posts: 53
Reg: 09-2011

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Sunday, April 21, 2019 - 12:36 pm, by:  John Summergreene (Easigonjack) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Had my twin turbo fail an emission test in Sydney due to it running too lean. Does anyone know a reputable person to tune it.
Blake Gloyn
Goo Roo
manawatu
soarer JZZ30 TT

Posts: 1374
Reg: 02-2006

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Friday, April 26, 2019 - 06:59 pm, by:  Blake Gloyn (Blakenz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

So they ere failing the car for not putting enough unburnt petrol into the atmosphere? I don't get it.
Goetz von Gneisenau
Newbie
QLD
V8

Posts: 4
Reg: 03-2019

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Friday, April 26, 2019 - 08:07 pm, by:  Goetz von Gneisenau (Sunshine) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

High NOx emissions can occur when an engine's air-fuel mixture is too lean. ... This could be caused by a problem with the vehicle's oxygen sensor, malfunctioning air flow and coolant sensors or a leak in the fuel system.
They obviously have limits on how high NOx emissions can be..
Mark Tierney
DieHard
NSW
JZZ30 GTT-L Built 1.5JZ Beast, UCF11, IS250, GS350-FSport, Ducati SS

Posts: 702
Reg: 09-2005

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Wednesday, May 01, 2019 - 10:02 am, by:  Mark Tierney (Mark_t) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Is it stock? Are you running an aftermarket EMS or boost controller ?

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