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EVO III 16g questions...

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Araider

15+ Year Contributor
43
1
May 25, 2005
Mundelein, Illinois
im looking into replaceing my stock T-25 with the EVO.. my questions are
1: What would the benefit of going with a 34mm flapper compared to the standard 30-31?
2: Also which parts are absolutely necessary to get the turbo working and installed.. I will not be needing full efficiency out of the turbo right off the bat... From my research i narrowed it down to the Evo O2 sensor housing, Oil return line, all necessary gaskets and such.. and i believe thats all i would need.....Any recommendations are greatly appreciated...
 
Araider said:
im looking into replaceing my stock T-25 with the EVO.. my questions are
1: What would the benefit of going with a 34mm flapper compared to the standard 30-31?
2: Also which parts are absolutely necessary to get the turbo working and installed.. I will not be needing full efficiency out of the turbo right off the bat... From my research i narrowed it down to the Evo O2 sensor housing, Oil return line, all necessary gaskets and such.. and i believe thats all i would need.....Any recommendations are greatly appreciated...

1. Better control of boost.
2. All you need is a 2g install kit, which will come with oil return line, gaskets, and the J-pipe. After you purchase the 2g install kit and the turbo, you will have everything you need to install the turbo. The install kit can be purchased just about from any vendor slowboy, forced performance, extremempsi, etc.... But since you don't have any fuel mods or any way to t une it just keep the boost down until you get them.

Hope this helps, Stay boostin
 
Araider said:
im looking into replaceing my stock T-25 with the EVO.. my questions are
1: What would the benefit of going with a 34mm flapper compared to the standard 30-31?
2: Also which parts are absolutely necessary to get the turbo working and installed.. I will not be needing full efficiency out of the turbo right off the bat... From my research i narrowed it down to the Evo O2 sensor housing, Oil return line, all necessary gaskets and such.. and i believe thats all i would need.....Any recommendations are greatly appreciated...

1. The benefit of going to with a 34mm flapper compared to the standard 30-31 is that you will have less problems with boost creep if any at all.

2. To put a evo 3 turbo on your car you will basically need a whole 2g install kit. That is Oil feed line(recomended from the oil filter housing), lower intercooler pipe, gaskets( turbine housing to manifold, turbine housing to o2 housing, and two oil drain gaskets), you can make the stock drain line fit a 16g turbo sometimes you have to grind it down a little, and the coolant lines will fit to although you might have to bend them a little by hand.
 
Araider said:
im looking into replaceing my stock T-25 with the EVO.. my questions are
1: What would the benefit of going with a 34mm flapper compared to the standard 30-31?
2: Also which parts are absolutely necessary to get the turbo working and installed.. I will not be needing full efficiency out of the turbo right off the bat... From my research i narrowed it down to the Evo O2 sensor housing, Oil return line, all necessary gaskets and such.. and i believe thats all i would need.....Any recommendations are greatly appreciated...


To get this running correctly you are going to need some sort of install kit. The 16g no longer has the elbow on it to run to the side mount intercooler. So you are going to need a few things. First off you are going to need a j-pipe coming off of the turbo. Then a type of 90* coupler going from the j-pipe to another straight pipe. Then yet another coupler going from the straight pipe to the sidemount intercooler. While doing this you will of course need the clamps to clamp down the couplers. ;) Oh, and you are going to need a nipple somewhere in the piping (either j-pipe or straight pipe) for the vacuum line because it is no longer on the turbo like on the T-25.

As for the O2 housing you can your take your 2g housing, port it and the flow can match and even flow more then a stock Evo O2 housing. Also, as you stated you will need the gaskets and oil lines.

Now for the 34mm flapper. The reason for the upgrade in the 34mm flapper is to reduce boost spike/creep. The simple thought process behind this is simple. If you increase the flapper size and the flapper hole size you are bypassing more air. Therefore less air spinning the turbine creating boost spike/creep. :thumb:
 
dalatinromeo said:
But since you don't have any fuel mods or any way to t une it just keep the boost down until you get them.

Where should i keep my boost? im currently around 16.. i would like to induce as little damage to my engine as possible but obviously keep some power... any ideas??


Also what do you guys think on the port + polishing... i wasnt sure if for my application it was necessary
 
Araider said:
Where should i keep my boost? im currently around 16.. i would like to induce as little damage to my engine as possible but obviously keep some power... any ideas??


On a 16g with no fuel mods, no more than 12lbs is safe. I would not go above this untill you have the proper fuel set up. :thumb:
 
At 12psi what kind of power do you think ill be looking at... Will it at least be more powerful the the T-25 at 16 p.s.i
 
Araider said:
At 12psi what kind of power do you think ill be looking at... Will it at least be more powerful the the T-25 at 16 p.s.i


Without fuel upgrades you are sacrificing just about everything. You will not be feeding the engine the fuel that it needs to make power nor will you be able to tune the engine with the correct fuel trims. Like any engine, more fuel and air...more power. If you are looking to do a 16g you will never reach the potential you want without the fuel. At the very minimum you will need a 190lph walbro pump, 550cc injectors, and an Apexi AFC.

The best fuel setup for a street/strip car with a 16g in my opinion is DSM link, 650cc injectors, 255hp pump, and FPR. This way you can get a much finer tune and still have control of your timing. :rocks:
 
Araider said:
Where should i keep my boost? im currently around 16.. i would like to induce as little damage to my engine as possible but obviously keep some power... any ideas??


Also what do you guys think on the port + polishing... i wasnt sure if for my application it was necessary

Keep your boost at 12 psi until you get your fuel mods. Port yes, and polish it is up to you whether you want the housing to look nicer.
 
You are definetly right on the fuel needs but my only problem is my finances right now... I just lost my T-25 and i need to piece something together quickly... I was planning on either gm mas/maft or an safc for fuel management, either 550cc or 650cc not sure and probably the wally 190... im not looking for 500HP im thinking my limit is around 350 this is my daily driver and my only car so i need some sort of reliability
 
Araider said:
You are definetly right on the fuel needs but my only problem is my finances right now... I just lost my T-25 and i need to piece something together quickly... I was planning on either gm mas/maft or an safc for fuel management, either 550cc or 650cc not sure and probably the wally... im not looking for 500HP im thinking my limit is around 350 this is my daily driver and my only car so need some sort of reliability


Understandable. With the 16g I would not run more than 12lbs. You will be right about the same power range if not a little more with that boost. Then once you get the finances together then I would get the fuel mods. Then tune and boost away. :thumb:
 
I dont know if anyone is watching this thread anymore but i was wondering if anyone knew where i could find the best deal for the turbo, install kit, and port+polishing... im researching all the sites connected to DSMtuners but even though im finding some decent prices i still kind of lean towards ExtremePSI.com just because i have trust in there site. does anyone know of a good site with competitive prices??
 
Araider said:
im looking into replaceing my stock T-25 with the EVO.. my questions are
1: What would the benefit of going with a 34mm flapper compared to the standard 30-31?
2: Also which parts are absolutely necessary to get the turbo working and installed.. I will not be needing full efficiency out of the turbo right off the bat... From my research i narrowed it down to the Evo O2 sensor housing, Oil return line, all necessary gaskets and such.. and i believe thats all i would need.....Any recommendations are greatly appreciated...

I just did mine a month ago. It isn't very hard, just make sure you have everything you need. If you have a FMIC, you will need a different J-Pipe than what comes in the 2-G install kit see link http://www.slowboyracing.com/more.php?id=1894&mods=21-932,38-4699 . As far as gains go, you won't see much without the fuel mods and turning up the boost. For the future get a 190 LPH pump if you don't plan on doing many more upgrades and do the fuel pump rewire. If you want to go all out get a 255 LPH pump when you are ready, required will be an Aftermarket Fuel Pressure Regulator, and you will absoultely want to do the fuel pump rewire mod. The fuel pump rewire mod only costs about $15. Do the porting. If you want an even bigger advantage, get the Evo III o2 housing, but know that it is not a direct fit onto the 2g down pipe. Some minor cutting is involved because the studs are a little further apaprt on the Evo III o2 housing. Hope this helps.
 
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