So what does that mean? If you're at 16 tuned but hitting 18-21, what can the consequences be?

Fk me dead

Okay

 

thanks for the info

Just do it and upgrade the core at the same time too. Win win!

"I'm told that the only option is to get a waste gate and turbo actuator to stop a mechanical problem from eventuating."

 

Does the reputable tuner mean an external wastegate to consistently achieve the target boost level?

Cause My T has the flapper mod and TS actuator on a high flow billet wheeled 3582 with a 4" dump, cat and 3.5" catback and it boost spikes to 20psi on occasion (16psi target on 98) according to the torque pro app. I believe I hear the actuator belching excess boost into zorst at times.

Previous tune was 20.5 psi and never heard that particular noise, only the blow off which was quite loud when u got of it. Who knows what it was boost spiking to then or maybe it was tuned better then?

Having said that it uses no oil and has good oil pressure, but is not nearly as much fun. 

2 minutes ago, Wyatt said:

4" dump, cat and 3.5" catback and it boost spikes to 20psi on occasion (16psi target on 98) according to the torque pro app

Same boost spikes as me and you had the flapper mod??

 

Now that's interesting!

 

Maybe its a tune thing? 🤔

Yep flapper mod included.

The turbine wheel is a 9 blade instead of the factory 11 blade. 

Target afr on dyno charts not smooth like we often see here, so fuel trim must be a bit loose, may have something to do with it?

This thread is great

Torque pro app isnt very accurate sometimes up to 4psi out. You have to set it to a guage and adjust it in the app.

Sigh 

 

Diff Bush done it ….