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Discussion Starter #1
Today for the first time ever, i had virtually no power kick in on the second turbo when i floored it from a second gear roll. same thing on the 3rd gear roll. when 2nd turbo came online, there was a very slight humming noise, not very loud at all, and a slight vibration associated with it. Those who have experienced turbo #2 failure, does this decription fit the beginning of the death of #2 turbo? However, the strange thing was, if i took off from a stop and went through first gear and second gear up to 60, it appeared to be fine. Thanks. Any help would be grately appreciated.

Zach
 
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Discussion Starter #2
Sounds like it is time to go Single turbo.

Chris
 

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try putting it on ttc mode with check valves and see if it kicks in. could be a bad vsv. when i was on ttc mode and switch back to sequential, my second turbo sometimes did not come on line. so now im back on ttc mode.

gl,
 
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tt4playn said:
try putting it on ttc mode with check valves and see if it kicks in. could be a bad vsv. when i was on ttc mode and switch back to sequential, my second turbo sometimes did not come on line. so now im back on ttc mode.

gl,

Thanks Bobby. i hope thats the case. I wouldn't mind being true twin anyways. i'll know if it works by next week. I don't plan to go single until a couple years from now.

Zach
 
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Discussion Starter #5
Mine started doing that once CA went to 91 oct. So I got half 91 and half 110 and it's much happier now.
 

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Make sure the vacuum lines did not come off your 2nd turbo actuator. This is located on the passenger side of the engine bay, by the fire wall. Looks like a small canister with a rod coming out. This device controls when and if your second turbo comes on line, if there is a blown or loose vaccum hose it will not work.
Josh
 
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THanks. The connection looks like its on securely. Strange thing though guys, my car is running fine now:confused:
All day today, the second turbo kicked in like it should. I dont know why its working now, but im not complaining. i hope it stays like this.

Zach
 

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Sound like a good reason to go single. I believe there is a pressure tank that maintains line pressure to that actuator. If for some reason there is a leak anywhere in the pressure tank system(lines etc.), it could cause the second turbo to not come on line.
 
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