To the OP - You have just committed blasphemy and will now be stoned to death.

 

I know this is off base but what size springs comes with the aps tt kit?? I have heard some say 7 and others say 12.

 

Without the boost controller on my buddy's APS TT kit makes like 5.5-6psi of boost...

 

Mine made 11 psi without a boost controller. I could probably hit 12 psi with the 3.5" down pipes.

 

Is that with the APS boost solenoid in place? My car with the stock actuators with no APS boost solenoid and my EBC turned off only makes 6 pounds of boost. Hell...with the boost controller cranked all the way up I can't even break 11psi...

 

That was without the boost solenoid. I can hit 11 psi with my Greddy manual boost controller too.

 

Mine are stuck open also. I got the springs changed out when I upped the boost and this is the second time it's happened. I don't have the Forge ones but I guess I need to have them. This happened in Sep and pissed me off so I said F it and haven't driven the car since. Damn, this thread reminds me to charge the dead battery and change the oil.

 

I find it impossible to believe that the actuators that APS supplies with their standard kit alone allow you to reach anything more than ~7psi of boost without some kind of boost control. If you could hit 11psi with the actuators alone...you should be able to get much higher than that with a boost controller. The actuators supplied with the kit are NOT 11lb...

 

Brian, will you be going FCON or something else with your new build. Would love to hear details on your build, pm me if you want it kept "hush hush".

 

My car runs 8.5psi with the boost controller turned off (Blitz SBC). I run the race exhaust and 3.5 downpipes.

 

that sounds like a problem if you ask me

 

I dont agree with you there Sharif. Are you saying 32k miles is the norm for the mean time to failure on a wastegate? Whats the point of a long life turbo if the wastegate goes out every 32k miles?

and if APS considered 32k miles high usage and intended the actuators to be replaced regularly, they should have at least designed the kit where the actuators where easily accessible. That would go along with their claim of a well engineered kit.

I use to be on the APS bandwagon. After 1 year and 32k miles... honesty... i dont think the APS TT can be called a "well engineered kit."

 

Are you going to acknowledge the fact that APS has nothing to do with the parts that have failed on your car? This is a Garrett part failure, not an APS part failure.

 

I would be curious as to why they are stuck. Are you guys going to pull it apart and investigate?

I suppose that its most likely the bushing where the actuator goes thru the housing has seized. What would cause that? Side load from misaligned actuator rod?

Do the turbine housings have any Garrett stamps on them? While the center section and blades can all be Garrett, its possible that the turbine houseings are aftermarket. Unless of course they say Garrett right on them.

 

Please re-read my original post. I never said the whole kit was bad. I just said APS should not be considered a superior kit. Peter marketed the kit as better then the others and at first glance it seemed true. Alot of ppl jumped on the bandwagon. I as well.

I use to be in the same positon as yourself tring to defend the good name of APS. When the kit first came out, i had some 30+ PM's with Peter. He was the most helpfull rep i had ever seen.

 

I intend to follow this up completely. I just have to drop by SGP and ask them as they proceed.

 

I understand what you are saying completely. I have tried to contact Garrett, but thier number isnt publicly provided or i just cant find it. Do you have it handy?

Are you certain that the whole turbo is a Garrett part? Even if it is, APS used it in their kit and so therefor are just as liable. They designed the kit so they are responsible for all the parts they choose to put in it down to the nuts and bolts.

Do you know how much of a car is outsourced? If the alternator in your Maxima breaks, do you call a Nissan dealer or do you call the alternator manufacture?

 

I don't think its normal for them to stick, but I guess I was trying to say, that its not extremely unusual. Fortunately, you were planning on upgrading the actuators anyways.

In all fairness, I think all of these kits could be better engineered in certain areas.

 

Garrett is cast onto my compressor housings.

 

Not for long....