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Bastard 20g or EVOIII 16g

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Kevin TSI

15+ Year Contributor
136
0
Jan 11, 2007
Muncy, Pennsylvania
I want a stock appearing turbo but i don't know which would be better. I would be running an external off the manifold.

I will have all the supporting mods and I have perfect compression. I'd like to make 350-400hp
 
I beleive you will have a better chance at 350-400 whp with the bastard 20g. Although I use the Big 16g myself, i love the spoolup and street manners but I will have to upgrade when I want more than 330 whp.

-Kevin-
 
Stock appearing with an external? haha. I'd say get the 20g if you're wanting more than 350ish whp.
 
I did search some but i know that most people find the regular 20g and the bastard 20g different.
 
Bastard 20g is a 20g compressor wheel in a 16g housing. Where a regular 20g is a larger turbo.
 
Do some research on the Hahn super 16g. My cousin used to run 12's in his 99 fwd with tuning and a big front mount.
 
I only said stock appearing turbo.... not wastegate. haha

There is a big difference in price between the two and you will be lucky to see 10-20hp more with the bastard 20g. So I would just get the evo316g.

Just out of curiosity why do you want a stock looking turbo.
If it doesnt have a internal wastgate on it then it isnt a stock looking turbo.
 
I agree, the bastard 20g is a waste of money. It is way less efficient because the housing is way to small and heats up the intake charge a lot.

Ive seen almost the same results with both turbos. Just get the evo16g, but if you want 350+whp get a full blown 20g or larger. The bastard 20g or 16g wont cut it.

Slowboy tested there bastard 20g on a street car and only made 330whp on race gas. Lots of mods. Funny how they pushed the 16g to over 400whp. Boosted over 30psi and it would drop to about 22 before redline.
 
I would use the EVOIII 16g my best friend has a 1996 Gst with 320hp using the EVOIII 16g. The bastard 20g is a waste of money! The EVOIII 16g has great spool up for the street. :dsm:
 
I agree, the bastard 20g is a waste of money. It is way less efficient because the housing is way to small and heats up the intake charge a lot.

Ive seen almost the same results with both turbos. Just get the evo16g, but if you want 350+whp get a full blown 20g or larger. The bastard 20g or 16g wont cut it.

Slowboy tested there bastard 20g on a street car and only made 330whp on race gas. Lots of mods. Funny how they pushed the 16g to over 400whp. Boosted over 30psi and it would drop to about 22 before redline.


Mark's street car with the 340 WHP on a bastard 20G went 12.1-12.2 @ 116 on pump gas three years ago. This was a stock 7.8:1 compresion block with a decent head on the car. Gosh, this was years ago as well!

Our SBR STG III longblock (same motor we tested EVO III to over 410 WHP with) made 430 WHP on the bastard 20G. We also tested a 50 trim on the same car, squeked out just under 450 WHP, the biggest drawback at this power level on all three of these turbos was the internal gate. The MHI evo III turbo is a freaky good turbo on a DSM :) I wish we would have taken the 2500 lb AWD DSM to the track with that turbo in it :)

Therefore, if the auther wants a good 350-400 WHP, both turbos are able. As in anything else in life, it really depends on your suuporting modifications and willingness to spend a lot of time tuning the car!

Your mileage may vary, but if you want a stock looking turbo, both of your choices you will enjoy.

Mike Huml
 
Wow didnt know you guys made that kind of power on that turbo. I guess I was a little wrong. Still proves the turbo does not have much space for power over the 16g.

I agree with you, the MHI evo III is a freaking unreal turbo, we have had many of turbo companies send us turbos to test that in theory should make more power than the MHI evo III, but none of them could quite match its potential.

At 15-17 PSI is where the bastard 20G made a bit more power than the MHI evo III, but at max boost they were almost identical.

Mike Huml
 
get a hybryd 20g from sbr or buschur u wont regret it!!and i mean that U WILL NOT REGRET IT!! SO LISTEN TO ME U WONT REG... JP on my car u can feel good spool up around 3.4k all the way to like 20psi now but it goes more no doubt ABOUT THAT have a good day>
 
i dont agree with either the 16g or the bastard 20g. you will make 320-330 wheel depending on your tune with either of those turbos. but i know you would get sick of that turbo very quickly. i guarentee you will want to upgrade in 6 months. im tellin you get a sbr 50 trim. its cheaper than the bastard 20g, makes more power alot easier and your not gona waste your time with a 16g turbo. you will be so much happier just jumping straight to the 50 trim. :talon:
 
i dont agree with either the 16g or the bastard 20g. you will make 320-330 wheel depending on your tune with either of those turbos. but i know you would get sick of that turbo very quickly. i guarentee you will want to upgrade in 6 months. im tellin you get a sbr 50 trim. its cheaper than the bastard 20g, makes more power alot easier and your not gona waste your time with a 16g turbo. you will be so much happier just jumping straight to the 50 trim. :talon:

Thats not neccesarily true. The evo3 has made over 400hp, so depending on his tune he can make up to 400hp. The 50 trim is also a laggy turbo (I just installed one). Have you owned an evo3 and a 50 trim to compare? I speak from experience here. I dont consider the 16g to be a waste of time, and I know alot of others here will have my back on that. And its hard to say that someone will be alot happier jumping to a certain turbo, especially a more laggy turbo that does'nt put out a whole lot more than the one you are comparing it to. Just my .02 :dsm:
 
i dont agree with either the 16g or the bastard 20g. you will make 320-330 wheel depending on your tune with either of those turbos. but i know you would get sick of that turbo very quickly. i guarentee you will want to upgrade in 6 months. im tellin you get a sbr 50 trim. its cheaper than the bastard 20g, makes more power alot easier and your not gona waste your time with a 16g turbo. you will be so much happier just jumping straight to the 50 trim. :talon:



You couldnt be more wrong.
 
You couldnt be more wrong.


If hes talking about race gas then yes he is wrong. If hes talking pump gas he is right. 340whp is almost impossible to break on pump gas on a 16g. I know your dyno of 400+hp is on an evo right? I only agree that the 50 trim will be easier to make power than the 16g or 20g bastard.



burnnxs said:
get a hybryd 20g from sbr or buschur u wont regret it!!and i mean that U WILL NOT REGRET IT!! SO LISTEN TO ME U WONT REG... JP on my car u can feel good spool up around 3.4k all the way to like 20psi now but it goes more no doubt ABOUT THAT have a good day>


Can you tell me why he should spend so much money on a turbo that barely makes 20whp more?? Its not worth the money for the turbo, even the the post from Slowboy proves that.
 
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