ybturbo

Hallo! I wanted to ask what is the expected exhaust gas temperature of a cossie cruising on 5th gear at 40-50mph? Mine seems lately to sit on 620-630 Celsius (measured before the turbocharger)... Maybe started to run really lean? CO and fuel pressure is spot on...

ybturbo

Anyone?

scoooby slayer

iTrader: (4)

i wouldnt worry about cruising at 650c manifold.

ybturbo

I see... it used to run on 550-570 on cruising at that speed before...

turbotoaster

if you have an egt gauge, surely you have a wideband aswell?

scoooby slayer

iTrader: (4)

i cant remember what my last yb was but my gtr cruises at 600 - 700c manifold number 6 runner at around 15.5 afr.

flat out is 900 - 950c at 11.4 afr, ive been to a gps measured 181 mph and those were the gauge readings just before i backed off.

F1N9ERS

egt= exhaust gas temp Y have you got it before the turbo? your not going to get the right reading from there are you

scoooby slayer

iTrader: (4)

oh dear

do you have any knowledge of how a turbo engine works ?

botters

iTrader: (2)

priceless lol

ybturbo

yap temperature measured before the turbo and a/f meter is reading halfway or towards to lean untill you step on the gas where it goes full rich...
Anyway seems there is no reason for me to be worried correct? Idle EGT is around 460 C and on full throtlle about 850-890 C...