AGP internal gate question (RS49ers enter)

[FourG63 97GST]

for people with an internally gate RS49 turbo.
how much boost can you get with just the wastegate/ lowest boost setting?

with my wastegate adjusted all the way, the most boost i'll get is 6-7psi, is that normal?

on (high boost) the most i'll get is 17psi

my profec is set to 100%, my gain is 100%, and set gain is 200.

i'm wondering if this is an wastegate or boost controller issue

 

[maximumbob]

I have the 60t and have not driven it yet but I am sure that that is not normal. You could try disconnecting the boost source to the wastegate and seeing how much boost you are able to run then. Also the normal policy of checking for boost leaks is in effect.
bob

 

[FourG63 97GST]

an yea i've already checked for leaks.
all siliconed and t-bolted

 

[maximumbob]

You're off to a great start then. Let us know about how the wastegate performs with no boost source.

 

[FourG63 97GST]

k, no boost source to wastegate, It held 16psi.

so does this conclude another crappy profec BII

 

[daren_p]

I don't have your turbo but when I hooked up my profec type s the most I can get with the high setting turned all the way up is about 18 & the gain is about 1/3. With my mbc I had hooked up before it I could see over 20 & could get alot more if I wanted too. I haven't disconected it to see what I boost with no controller but I'm almost positive its the source of low boost. I have heard of others having the same problem with low boost & you have to return the unit to greddy to get the software upgraded

 

[maximumbob]

No that means that the profec is working fine, although I dont have personally it sounds like it is working fine. Short of an exhaust leak, it means that you should tighten the wastegate rod. I mean that you should turn the arm of the wastegate actuator to shorten the rod which will seal and "preload" the wastegate. If you search around you should be able to find some more information about the idea of shortening the rod.

 

[FourG63 97GST]

thats the thing, the rod is tightened all the way. well as tight as I feel confortable with.
any tighter I feel prolly rip the diaphragm out an have more issues to deal with.

I've experimented with the wastegate adjustment when I first installed it. from end to end i'll get no more than 6-7psi

on high boost, with the profec B setting the flapper shouldn't start opening till 20psi

 

[FourG63 97GST]

I have heard of others having the same problem with low boost & you have to return the unit to greddy to get the software upgraded

yea am i'm sure i'll get it back

 

[maximumbob]

I would contact AGP to see what they have to say. As far as the profec B part I am just not sure that it's the problem if you are having the same problem with it disconnected from the wastegate.

 

[Turbocharged]

This may be a stupid question but... did you adjust the wastegate in the correct direction? The wastegate arm should get shorter as you tighten it.

 

[GPTourer]

yea am i'm sure i'll get it back

I'm sorry, I just couldn't help it. I would feel the same way. Are people having problems with Profecs? The "B" is the one I thought was the best, while the II or the Type-S may have been sometimey.

 

[mkcomp]

I had the same problem on my RS49t... only 14psi. Preloaded the wastegate actuator arm and it instantly solved my problem. I can now run any boost level desired consistantly with no creep or loss of boost pressure. Shorten the actuator arm and pull it over the flapper swivel.

 

[Turbocharged]

I agree the AGP wastegate kicks ass. I ported the wastegate section a little to increase flow and removed a little material from the flapper arm so that it could open all the way. I can run 14 psi to redline if I want.

Off the topic -
I was wondering if anyone has incountered problems with the compressor housing leaking. I contacted agp about the situation and they told me that I the turbo does not have a gasket for the compressor housing. They suggested using gasket sealant to stop the leak. The thing that sucks is that I switched to this turbo from an sbr2g20g that had the same problem. Except the sbr turbo was WAY worse. Plus they crew at sbr was jerking me around like I was a moron. I needed to apply sealant every few months to create a good seal. Im almost positive that the housing was warped or was not properly machined to fit the cartridge that it was attached too... anyways Im hoping this problem doesnt manifest itself into a similar situation... sorry for the rant

 

[maximumbob]

After sorting out many problems, boost leaks, I have also realized mine compressor housing leaks air. I was going to call AGP about it but haven't had the chance yet. It is only a slight leak though.

 

[Turbocharged]

At least the rs49 compressor housing is easily removed compared to some other turbos...

 

[RotaryRyan]

WHere on the housing are you guys having problems with leaks?

I bought an rs49t recently but havent gotten to use it yet.

 

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