Evo III turbo options?
Thread Starter
Joined: Oct 2007
Posts: 107
Evo III turbo options?
Hey guys,
I was just browsing around on slowboy.com and im thinking about getting the evo III. My ? is whats the best route to go with the options? Theres an option to get the turbine inlet and outlets ported, ans well as have an internal wastegate or external. I am very new to turbo so i have no idea whuch way to go.
Please help me make a choice and why.
Thanks,
I was just browsing around on slowboy.com and im thinking about getting the evo III. My ? is whats the best route to go with the options? Theres an option to get the turbine inlet and outlets ported, ans well as have an internal wastegate or external. I am very new to turbo so i have no idea whuch way to go.
Please help me make a choice and why.
Thanks,
Banned
Joined: Feb 2006
Posts: 16,176
From: Austin, TX
RE: Evo III turbo options?
Well the standard 32mm internal wastegate kinda has problems. For example, when the boost reached th desired level, it stops at that point, and gradually rises. This is very very bad. See youtube for an example video "boost creep". What a wastegate does, is let out the excess exhaust gasses, and if they cant get out fast enough, the boost is going to keep rising. The 34mm definatly helps with this. An external wastegate will totally eliminate it, although its a little more expensive. You will need to get either a new exhaust manifold with a flange welded onto it for the wastegate or get one welded onto the stock one. And then ofcourse you would have to buy a wastegate.
Personally, if you plan on going bigger than the 16g in the future, I would go with the external. If you just plan on keeping the 16g, then go for the 34, but i would definatly not stick with the 32mm.
Porting will reduce your spool time a little. All it does is increace flow. If you have the money, why not? Not something I would bother with though.
Personally, if you plan on going bigger than the 16g in the future, I would go with the external. If you just plan on keeping the 16g, then go for the 34, but i would definatly not stick with the 32mm.
Porting will reduce your spool time a little. All it does is increace flow. If you have the money, why not? Not something I would bother with though.
Thread Starter
Joined: Oct 2007
Posts: 107
RE: Evo III turbo options?
ORIGINAL: Sebba
Well the standard 32mm internal wastegate kinda has problems. For example, when the boost reached th desired level, it stops at that point, and gradually rises. This is very very bad. See youtube for an example video "boost creep". What a wastegate does, is let out the excess exhaust gasses, and if they cant get out fast enough, the boost is going to keep rising. The 34mm definatly helps with this. An external wastegate will totally eliminate it, although its a little more expensive. You will need to get either a new exhaust manifold with a flange welded onto it for the wastegate or get one welded onto the stock one. And then ofcourse you would have to buy a wastegate.
Personally, if you plan on going bigger than the 16g in the future, I would go with the external. If you just plan on keeping the 16g, then go for the 34, but i would definatly not stick with the 32mm.
Porting will reduce your spool time a little. All it does is increace flow. If you have the money, why not? Not something I would bother with though.
Well the standard 32mm internal wastegate kinda has problems. For example, when the boost reached th desired level, it stops at that point, and gradually rises. This is very very bad. See youtube for an example video "boost creep". What a wastegate does, is let out the excess exhaust gasses, and if they cant get out fast enough, the boost is going to keep rising. The 34mm definatly helps with this. An external wastegate will totally eliminate it, although its a little more expensive. You will need to get either a new exhaust manifold with a flange welded onto it for the wastegate or get one welded onto the stock one. And then ofcourse you would have to buy a wastegate.
Personally, if you plan on going bigger than the 16g in the future, I would go with the external. If you just plan on keeping the 16g, then go for the 34, but i would definatly not stick with the 32mm.
Porting will reduce your spool time a little. All it does is increace flow. If you have the money, why not? Not something I would bother with though.
Joined: Jun 2007
Posts: 740
From:
RE: Evo III turbo options?
Also something that is a great upgrade that will help with boost creap as well is an EVO III o2 housing. The stock one doesn't even line up right with the Evo III anyways, so unless you port it yourself it would be a great idea to go with that. I just installed my Evo III last month and did all the porting myself. I installed the 34mm wastegate myself too. I am running 15psi right now and expereience virtually no boost creep. I ported the stock o2 housing alot. I was ver careful and it took me about 10hrs to port everything myself.
Thread Starter
Joined: Oct 2007
Posts: 107
RE: Evo III turbo options?
ORIGINAL: dorian7
Also something that is a great upgrade that will help with boost creap as well is an EVO III o2 housing. The stock one doesn't even line up right with the Evo III anyways, so unless you port it yourself it would be a great idea to go with that. I just installed my Evo III last month and did all the porting myself. I installed the 34mm wastegate myself too. I am running 15psi right now and expereience virtually no boost creep. I ported the stock o2 housing alot. I was ver careful and it took me about 10hrs to port everything myself.
Also something that is a great upgrade that will help with boost creap as well is an EVO III o2 housing. The stock one doesn't even line up right with the Evo III anyways, so unless you port it yourself it would be a great idea to go with that. I just installed my Evo III last month and did all the porting myself. I installed the 34mm wastegate myself too. I am running 15psi right now and expereience virtually no boost creep. I ported the stock o2 housing alot. I was ver careful and it took me about 10hrs to port everything myself.
Thanks,
Joined: Jun 2007
Posts: 740
From:
RE: Evo III turbo options?
Overall I like it better, there is def a difference, I was running 17psi on the t25 and now I am running 15psi on the evo and it is considerably faster. Especially top end. It takes a little longer to spool but pulls hard all the way to the red line. It is definently a great upgrade. The t25 spooled easier and faster but obviously, I am sure you know that it drops off pretty quick the evo III pulls really hard. I don't know if you have ever ridden in a WRX but that is the what it feels like when the EVO III is in (that type of power).
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