Brettus turbo 111 (the ultimate Renesis turbo ?)
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Boosted Kiwi
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From: Y-cat-o NZ
Comparing it to a NA dyno, it looks like you are making more power from 3k rpm on. It's a virtual dyno, so take it with a big grain of salt, but 10psi+ at 4k is nothing to sneeze at.
As you tune it out, you may get an earlier spool as well.
As you tune it out, you may get an earlier spool as well.
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Yeah ... it's not terrible spool up ... just not anywhere near what I had hoped for .
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From: Y-cat-o NZ
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From: Y-cat-o NZ
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The 0.83 idea will definitely improve spoolup but the effect top end will be a double whammy kinda deal . Less power due to higher backpressure at turbo AND siamese .
Gunna concentrate on getting the pulse energy back from the siamese port .
Don't feel like an argument over why it wont work right now . So I'll see if it does then post.
Gunna concentrate on getting the pulse energy back from the siamese port .
Don't feel like an argument over why it wont work right now . So I'll see if it does then post.
Last edited by Brettus; Jul 31, 2015 at 04:39 AM.
You will need higher backpressure at the center port for effective boost control though. At your power level for that turbo I don't think the "whammy" is as much as you think it is.
But good luck with whatever direction you go from here.
But good luck with whatever direction you go from here.
Having 10psi at 4k with a lot of headroom is different from having 10psi at 4k with no headroom. This is new and the results are promising.
If he's controlling at 16psi then he does have sufficient backpressure on the wastegate. Scavenging some from the center port will be a tiny effect on the backpressure the wastegate sees. I'm more worried about crossover to the other side dropping efficiency, but we'll see what happens soon.
If he's controlling at 16psi then he does have sufficient backpressure on the wastegate. Scavenging some from the center port will be a tiny effect on the backpressure the wastegate sees. I'm more worried about crossover to the other side dropping efficiency, but we'll see what happens soon.
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Thank you for recognising this .
One half of the goal is already achieved pretty much .... if I can get close on the other half (by improving spool), I think I can just about be justified in removing the question mark on the thread title.
One half of the goal is already achieved pretty much .... if I can get close on the other half (by improving spool), I think I can just about be justified in removing the question mark on the thread title.
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Not only can I control 16 psi ... but down to 4 psi as well . If I put a 4 psi spring in and switch off the EBC.... I get exactly 4 psi all the way to redline .
I currently have a 6psi spring in and can dial up whatever boost I want .... that 4 port valve really is doing the trick !
I currently have a 6psi spring in and can dial up whatever boost I want .... that 4 port valve really is doing the trick !
Last edited by Brettus; Jul 31, 2015 at 12:54 PM.
The 0.83 idea will definitely improve spoolup but the effect top end will be a double whammy kinda deal . Less power due to higher backpressure at turbo AND siamese .
Gunna concentrate on getting the pulse energy back from the siamese port .
Don't feel like an argument over why it wont work right now . So I'll see if it does then post.
Gunna concentrate on getting the pulse energy back from the siamese port .
Don't feel like an argument over why it wont work right now . So I'll see if it does then post.