Seems like you have a boost leak or mis configured WG actuator. You should not be tapering to 18psi. Late spool, low torque and a huge taper indicate a boost leak.

 

I would love to see your dyno sheet. If it was a dyno jet please upload your dyno run files so we can see them.

 

Dyno sheets here:

https://www.evolutionm.net/forums/sh...d.php?t=193278 Post #42

Dyno is a Dyno Dynamics (multiply by 1.15 to get approximate DJ equivalents). The boost curve appears to be strange because we were increasing the boost in an attempt to increase the power further (to no avail). There were no boost leaks.

 

Why do people want huge gains that uses the SAME HOUSING has the evo9 and the SAME HOTSIDE from the 05's up?

If you just putt around all the time running pump gas on the stock turbo you probably don't want a 20G.

If you use race gas and or meth at track events etc.. you may want to check it out. I recently visited the local 1/8 track and managed a 7.5@93 with very conservative fuel/timing 98oct 26psi. There is a lot left in the tune... unfortunately I can't say the same for the transfer case

 

I along with many others do. Anyone who wants to get the maximum power out of whatever setup they are running uses race gas.

Yes, in order to realize the gains of the 20G turbo you need to run over 23-24 psi. At 20psi the little bit bigger wheel doesn't really flow enough air to make a HP difference. At 29psi, however, we have a whole different story. BTW, to "make the most out of" any turbo you need race gas or WI/AI.

I know VERY FEW people who run race gas all the time, so you are not making any sense. You run pump gas around town, then when you go to the track you pour in the race gas and crank the boost or upload your race gas map. I would say that is extremely common, so I don't know what "people" you are referring to. Also, in my crowd (autocrossers and road racers) spool up and low end torque are KING. To get that you run race gas and high boost and spin the crap out out of a smallish turbo.

https://www.evolutionm.net/forums/sh...d.php?t=202727
Yes, pretty damn good for the stock turbo, really damn good for the 20G9.

Don't know what rock you've been living under, but this has been done, and subsequently discussed over and over and over again. Since you obviously don't want to read and believe what has been posted on the forums, call this # 440-839-1900 Wednesday morning, ask whoever answers why and under what conditions the 20G9-5 is better than a stock EVO VIII or EVO IX turbo. Here is a small snippet of the info that is out there if you just try to educate yourself . . . http://buschurforums.com/forum/showthread.php?t=15731

EVOlutionary

 

FWIW, in regards to this subject all i have to say is that the car I've tuned with a 20G EV0 8 (Not even a 9) easily made over 300 whp on a mustang dyno with a much less agressive tune than what I needed to make over 300 whp on the same dyno with my 16G.

The 20G EVO8 turbo could have easily made more power im guessing in the 310-315 whp range, but my customer wanted to stop at 300 whp as that was his target hp for the car.

Although I have changed my car to a GT setup, we have another EVO here at the shop which is an 04' GSR that is fairly stock (TBE exhaust only). We will continue to do our product testing of the 20G EVO9 on this car, and will post the results as soon as it is available.

From what I have seen, the 20G does infact lose spool to the TME and stock 16G. The 20G is a bigger wheel and uses an aggressive turbine clipping, so this is unavoidable.

 

FWIW, I made 313whp on a Dyno Dynamics with a regular TME and 320whp on 93 oct with a 20G-9-6 TME, while peak power with meth injection went from 348 to almost 360. Peak power was improved (albeit marginally), but peak power wasn't the reason I pulled that turbo off the car.

 

There is no Evo9-20g Forge actuator available. Recommending he adds parts that do not exist does not help him.

 

does Buschur sell the 5blades by themselves, or do i have to ship him my housing to be modified?

 

Previously I had a WR turbo and compared to stock that turbo does lose a bit of response too. Other users of the WR in my area also report the same thing. My experience with the WR is very similar to the 20G in that it was very easy to break the 300 whp mark on a conservative tune.

 

You are way low on boost. You are about 10psi short of what the turbo is capable of. Conservatively and hypothetically 10psi x 7hp is 70hp.

You are not using the turbo.

Both 2005 and 2006 IX turbos are capable of low to mid 30psi.

The reason spoolup and tq seems low is the clipped turbine wheel which allows some exhaust gas to pass the blades which slows spoolup, but increases high rpm flow.

 

This is a pure assumuption, provided that the PR remains low. In my case, it didn't.

 

ok i think you are lost here buddy. People want to buy a turbo that make good power pump gas, that's the whole point. Nobody in their mind telling themself "i'm going ot buy a turbo and use race gas only" exception of tracking once in a while. I agreed with you to make the most out of any turbo you need race gas, well so does the engine. So tell me something that i don't know. Also you can put a GT30R and you can make easily 400whp on pump. On the other hand about tracking, you know very little. just because you have big turbo that doesn't mean you going to win bro. on Small track big turbo will be hurting bad, also it's not all about the power, it's all on suspension, you might beat the person on straight stretch but the guy with stock turbo and good suspension will make it up in the turns x10 times . So you telling put a big turbo with race gas and go autocrossing , WTF ?? small turbo are better for autocrossing than big turbo bro, don't tell me you are in 3rd gear and 4th during Auto X. maybe you are in 3rd for split seconds


i'm here to reason or argue with anyone. i'm speaking from my epxeriences with both evo9 20g and the 20g 9 TME.

 

Vboy, man come on. Again, you didn't understand what someone was saying and tried to refute it or argue it. Evolutionary said that autocrossers and road racers spin the crap out of a SMALLISH TURBO (you know, like the stocker). You then went and said "so you telling put a big turbo with race gas and go autocrossing, WTF ??"

You really need to start reading and comprehending before posting. I know English is not your first language, but if you're not sure about something, ask someone to clarify for you first.

 

I honestly don't think my car has any boost leak problem. I don't see the need of pressure testing it beyond 15 steady psi. And I did tighten the actuator to its max and had to pressurized it to reach the wastegate arm when I installed it back on, so there is more pressure on that gate now than before.
16g is going back on and 20g-9-6 is now for sale. I don't wanna push this thing to 30 or so PSI to see the real gains. I pushed the 16g on 110 octane and 23 psi and did 325hp 325 tq.
This 20g only did 317hp and 307tq. Maybe its not even a 20g-9 but just a evo9 16g. I don't know enough to look at it and determine the difference.
I started the thread to see if what I got is a not the real thing. It doesn't seem to me that people like this turbo either way.