Internal wastegate question...

gc8impreza00 · 07-15-2005, 11:08 AM

Well Im going to install a turbo kit but I was hoping to have it tuned before I boost my engine...I have heard that it would be possible to take off the wastegate actuator so that the exhaust bypasses the turbine (obviously). anyway, I have the old legacy VF11 turbo and im tryin to figure out how to keep that wastegate open for a 4 hour drive to the tuner. Takin off the actuator doesnt seem like it would help. I understand the idea but I dont know how to keep it open since the spring closes the wastegate... How could I keep that thing open without having to hit max boost?! Anyone have any ideas for this?

or maybe someone teach me how to tune my engine myself...

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Freon · 07-15-2005, 12:20 PM

The actuator is what holds the wastegate shut. If you take it off, the flapper on the wastegate will just stay open, letting exhaust gas bypass the turbine.

The spring is in that little pod do-hickie part of the actuator. If you take off the actuator, the spring is gone as well. Maybe I'm missing something here...

gc8impreza00 · 07-15-2005, 12:24 PM

ur a genius. im a moron. Thanks man

ExecNav · 07-15-2005, 01:01 PM

Even with the actuator arm disconnected and the wastegate held open, you're still going to get some extra air. Perhaps if you kept the revs down and a light foot, you would be fine. Instead of trying to bypass the turbine, why not remove the intercooler and just stick a filter on the throttlebody for the drive?

What kind of EM are you going to be using? You don't have a base map or anything?

gc8impreza00 · 07-15-2005, 02:01 PM

wont i still need to do something about the wastegate since the exhaust is runnin through the turbo or no? and yeah im not plannin on drivin over 65mph.

im running the Perfectpower piggyback ECU.

ExecNav · 07-15-2005, 02:36 PM

The turbo is going to spool up and blow garbage loads of air into your engine bay but as long as nothing is in the way, it won't hurt anything. Probably sound pretty cool too.

I would definitely remove the wastegate arm and wire the wastegate open. I don't imagine that thing needs to be spinning up too much. Or if you want, go ahead and tap your vac lines and hook up the wastegate actuator. Either way works I suppose.

-Brett

gc8impreza00 · 07-15-2005, 02:40 PM

i'll hook up the wire to hold open the wastegate and take off the IC. Listen to the turbo spoolin like a mofo all the way to rallitek might be kinda fun. lol

kgb · 07-15-2005, 02:44 PM

Get a boost gauge in and watch your foot - even with my GT28R, I can keep it below boost with the foot on the flat planes - if you do need to go uphill on your way, then it's going to be really tough.

gc8impreza00 · 07-15-2005, 02:48 PM

im going to have to go up and down hills... anyone know of a good cheap boost gauge?

07-15-2005, 11:08 AM	#1
gc8impreza00 Scooby Newbie Member#: 81107 Join Date: Feb 2005 Location: Southern Oregon Vehicle: 2000 2.5rs silverthorn/Carbon Fiber	Internal wastegate question... Well Im going to install a turbo kit but I was hoping to have it tuned before I boost my engine...I have heard that it would be possible to take off the wastegate actuator so that the exhaust bypasses the turbine (obviously). anyway, I have the old legacy VF11 turbo and im tryin to figure out how to keep that wastegate open for a 4 hour drive to the tuner. Takin off the actuator doesnt seem like it would help. I understand the idea but I dont know how to keep it open since the spring closes the wastegate... How could I keep that thing open without having to hit max boost?! Anyone have any ideas for this? or maybe someone teach me how to tune my engine myself... * Registered users of the site do not see these ads.

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07-15-2005, 12:20 PM	#2
Freon Scooby Specialist Member#: 88322 Join Date: Jun 2005 Chapter/Region: MWSOC Location: Indianapolis, IN Vehicle: 2009 BMW 135i	The actuator is what holds the wastegate shut. If you take it off, the flapper on the wastegate will just stay open, letting exhaust gas bypass the turbine. The spring is in that little pod do-hickie part of the actuator. If you take off the actuator, the spring is gone as well. Maybe I'm missing something here...

07-15-2005, 12:24 PM	#3
gc8impreza00 Scooby Newbie Member#: 81107 Join Date: Feb 2005 Location: Southern Oregon Vehicle: 2000 2.5rs silverthorn/Carbon Fiber	ur a genius. im a moron. Thanks man

07-15-2005, 01:01 PM	#4
ExecNav NASIOC Supporter Member#: 30554 Join Date: Nov 2002 Chapter/Region: South East Location: Ellijay, GA Vehicle: 08 LGT Spec.B 01 Impreza RS-T	Even with the actuator arm disconnected and the wastegate held open, you're still going to get some extra air. Perhaps if you kept the revs down and a light foot, you would be fine. Instead of trying to bypass the turbine, why not remove the intercooler and just stick a filter on the throttlebody for the drive? What kind of EM are you going to be using? You don't have a base map or anything?

07-15-2005, 02:01 PM	#5
gc8impreza00 Scooby Newbie Member#: 81107 Join Date: Feb 2005 Location: Southern Oregon Vehicle: 2000 2.5rs silverthorn/Carbon Fiber	wont i still need to do something about the wastegate since the exhaust is runnin through the turbo or no? and yeah im not plannin on drivin over 65mph. im running the Perfectpower piggyback ECU.

07-15-2005, 02:36 PM	#6
ExecNav NASIOC Supporter Member#: 30554 Join Date: Nov 2002 Chapter/Region: South East Location: Ellijay, GA Vehicle: 08 LGT Spec.B 01 Impreza RS-T	The turbo is going to spool up and blow garbage loads of air into your engine bay but as long as nothing is in the way, it won't hurt anything. Probably sound pretty cool too. I would definitely remove the wastegate arm and wire the wastegate open. I don't imagine that thing needs to be spinning up too much. Or if you want, go ahead and tap your vac lines and hook up the wastegate actuator. Either way works I suppose. -Brett

07-15-2005, 02:40 PM	#7
gc8impreza00 Scooby Newbie Member#: 81107 Join Date: Feb 2005 Location: Southern Oregon Vehicle: 2000 2.5rs silverthorn/Carbon Fiber	i'll hook up the wire to hold open the wastegate and take off the IC. Listen to the turbo spoolin like a mofo all the way to rallitek might be kinda fun. lol

07-15-2005, 02:44 PM	#8
kgb Scooby Specialist Member#: 1366 Join Date: Apr 2000 Chapter/Region: VIC Location: Delta, BC, Canada Vehicle: 2000 RS-T -> RSTi-8 Blue Ridge Pearl	Get a boost gauge in and watch your foot - even with my GT28R, I can keep it below boost with the foot on the flat planes - if you do need to go uphill on your way, then it's going to be really tough.

07-15-2005, 02:48 PM	#9
gc8impreza00 Scooby Newbie Member#: 81107 Join Date: Feb 2005 Location: Southern Oregon Vehicle: 2000 2.5rs silverthorn/Carbon Fiber	im going to have to go up and down hills... anyone know of a good cheap boost gauge?