no - the signal line , not the line going to the solenoid .

 

That is what he described.
"Outlet [of the turbo], to the BC [solenoid], to the wastegate [actuator]".

 

I would have called that the control line and the one going to the boost controller as the signal line but ..................whatever ,

 

The "signal" line is the line going from the turbo discharge to the solenoid input.
Maybe we are saying the same thing.
It just sounds weird.

 

If I was making up names for everything I would call that line the supply The one to the actuator the control and the one to the electronic BC the signal . That may not be convention but it seems logical to me .

 

I usually refer to the 3 connections as:

wastegate (self explanatory), pressure source (turbo discharge), and boost signal (intake manifold)

 

very good ngo - why didn't i think of that ? LOL

 

lol, if one word makes things confusing, use two!

 

Mind you a simple diagram would have kept the post count down .....

 

You say tomato...

 

But who says 'potahhto'?

Nobody, that's who.

Fuckem.

 

Lol, I greatly apologize for the confision

 

Was hoping to get to the bottom of these early turbo failures .
Alas , I fear the plot has been lost .

 

Uh, we figured that out 3 years ago.
Overspin a journal bearing turbo with improper oiling/cooling.

 

/\ Shelldudes was still in the babying phase and Frosty's didn't sound like it did many miles either .
If guys are not getting many miles from thier turbos with the correct restrictor in place and not even pushing the turbo hard either then there has to be another issue as well .

 

Must be that pesky, restrictive discharge pipe.

 

LOL - that'll be it .
Glad to see you still have a sense of humour .

 

It is fundamental to my very existence.

 

Some possibilities off the top of my head

*Restrictor too big or too small
*Drain too small or too long or not direct enough (ie sharp bends)
*Poor BOV setup . IE compressor able to surge due to spring set too tight
*Poor BOV/Boost control setup . IE turbo able to spool up to high pressure at low flow at part throttle.
*poor oil quality (ie no filter on supply line combined with poor oil change habits)
*oil under or overheating
*Wrong oil used

 

sigh

Pretty sure it's a bearing... Got it delivered to KDR today via flatbed. Had the restrictor discussion with Dave.... need to talk more about the oil inlet/return. BOV is to atmosphere... Synapse... now that Dave's got it I'll likely have him recirculate it since it'll be away from home for some yet disclosed amount of time. Also considering dropping the Synapse all together. Boost has been nice and smooth from the get go... haven't had any spikes or anything like that. Oil has been 10w-40 since day one with the snail (did notice a significant increase in pressure when I cutover)... Have changed it twice in the 4000 or so miles (once at 500 and a second time a couple weeks back)... have been running RP. I keep out of boost until oil is no lower than 140.... it normally hovers between 165-180.

 

/\ damn man - that sucks .
Given the very short failure period I would definately lean towards an oil supply/drain issue .

Curious : how can you run VTA with the synapse / AP and not get backfire and idle issues ?

 

I stay in auto.... it definitely gets explosive in manumatic mode, but fullly auto i've had zero issues... I am looking forward to the recirc change now that I'm over the whole "hiss" thing. I may even go with one of the alternate "leaky" settings since the blow off will be reclaimed... a known "feature" of the synapse... silly synapse says it's a benefit... go figure... hks or greddy are also definite options.

 

should have I have the anti-stall adapter on the synapse which solved the stall issue.

 

Could actually help with turbo life believe it or not .......

 

With my synapse recirculated it is just as loud as when it wasn't