Limp mode or something else?

[Covo71]

Would appreciate update after you take it in. I thought I had mine sorted as mine hasn't gone in to limp for a few weeks since I dropped boost limit to 14 and slowed the spool slightly. Done a couple of 2 and 3 hour trips and towing a trailer and all good. Driving in Sydney today and went into limp. Got a catch can, just waiting to install on day off.

[Rumcajs]

Limp like this is caused by either MAP (boost) above 17.9 psi or by MAF (air flow) where 3.99 V under 3000 RPM is obtained.
I suspect that you getting the dreaded Dawes bounce/spike where under certain condition the boost pressure hits over 18 psi briefly. This can happen if you have setup your Dawes during warmer weather period too. Cooler days make air more dense with more poke and turbo spools up quicker getting the overboost.

As already suggested you need to back the Dawes off a touch or have HD spring installed.

There will be no warning lights on the dash.

Cheers

[outback]

Oil in the intercooler is normal, sort of. It comes from the crank case vent tube that runs from the top of the motor and back into the air intake. To overcome this you install a catch can to filter the vapors before they enter the air intake.

I have a catch can, sorry I did mean on the outside not inside, very fine smear.

[outback]

Outcome:
1. codes checked: nothing
2. one of the hoses to the Dawes Valve had a crack. Possibly cracked at time it went limp.
Said it was the hose from the intercooler.

Anyway fixed so far.

[Hodge]

Glad you fixed it outback.
Was watching this thread, to see the outcome. For a while there the slug moods my car was having (now fixed), I thought may have been limp modes.
My car exceeds 20psi easy when I let it. Even when mudski drove it the other day psi went through the roof and no limp mode.

[outback]

As i said fixed so far.
Wont really know till I hit the highway next week and try passing a few B-Doubles or road trains.

[Pokey]

Last night I hit limp mode. Made 17 psi in very cold dense air. One annoying thing about my setup is that I get cold limp often till the engine is up to normal operating temperatures. What's the criteria for cold limp mode?

[threedogs]

Not 100% but I think you can go into a sort of limp mode if trying to rev to hard on a cold motor.
I think its just a safety thing same if redlining on a cold motor IMO

[Rumcajs]

Last night I hit limp mode. Made 17 psi in very cold dense air. One annoying thing about my setup is that I get cold limp often till the engine is up to normal operating temperatures. What's the criteria for cold limp mode?

MAF voltages are usual culprits, need to see if you are exceeding 3.7 V bellow 2,500 RPM or 3.99 V bellow 3,000 RPM.
One thing you do need to consider is the so called boost spike, anything over 17.9-18 psi and you'll get instant limp.The trouble is that this has the tendency to happen in 3rd gear uphill under the harder acceleration. I can almost reproduce it in another words I know I need to back off a little once I hit 2,700 RPM. Back off Dawes so your max spike doesn't pass 16 psi.

Cheers