High EGT when towing

Hi all,

I have a DI 3ltr with 3" exhaust, Dawes valve, egr blocked and a rapid chip installed. When I fitted the egt gauge and boost gauge I found the egt was hitting the 650 mark if I floored it and was running 14psi boost. I have upped the boost to 16psi and this helped but when towing my caravan I can easily do the same. I don't know anything about the chip and can't find any adjustments on it. Should I adjust the boost to 18psi or would I need to get it dyno'd? I'm going to the Kimberly in May and want it sorted before I head off😀

Cheers
Brad

Where is the EGT probe located, it may be too close to the Turbo.
Do you have a needle valve fitted ???
are you blowing more black smoke than normal??
Ideally you need around 10psi at 100 kph or 2000 rpm

Egt would be 2~3 in back from the turbo and no needle valve. Runs about 12psi from memory at 100kmph. It's only up hills or if I hold it flat at the higher end of rev range it gets hot readings. Wouldn't say it blows exsesive black smoke either.

if you have an auto ,do what I do and click the OD off raising the revs and lowering the egts
so the probe is easily visible from the engine bay??

Got a manual mate. If I back the loud peddel off it drops but just a little worried when I go bush in say boggy areas where I can't back off. What is the maximum boost I can run?

some here run 30psi mine is about 28psi Mullet hunter has 26psi all with no problems.
Increase your boost a little at a time and see what happens, Disconnect the battery too, to erase
any memory, Others here struggle to get 15psi without going into over boost mode.
each is different, see how you go

EDIT might need a needle valve fitted to control your spool up rate.
Mudski will be along soon to explain a bit better

What should my pyro read after the turbo

Was seeing 650 when towing. Removed head and found glow plug melted would that be the cause

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Originally Posted by Mjcpatrol

What should my pyro read after the turbo

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What engine and what mods?

Quote:

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Originally Posted by Mjcpatrol

Was seeing 650 when towing. Removed head and found glow plug melted would that be the cause

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No, and, 650 out of the box is normal for some Patrols when towing

The Rapid chip can be adjusted/tuned but needs to be done via a control unit that plugs into it. The dealers of these units have these control units. I know that MTQ in Adelaide sell Rapid as does 4WD Systems (http://www.4wdsystems.com.au/index.php?id=87) so maybe take the car there for a tune up if you are worried.