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Old Sep 1, 2008 | 09:45 AM
  #61  
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Yank off your WGA and crank it down all the way, then re-install. E85 should let you run peak psi of whatever you want, guys around here run about 28psi peak and then just hold on to whatever they can up top. Lots more power to be had, crank it up! Don't be afraid
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Old Sep 1, 2008 | 11:19 AM
  #62  
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Originally Posted by scheides
Yank off your WGA and crank it down all the way, then re-install. E85 should let you run peak psi of whatever you want, guys around here run about 28psi peak and then just hold on to whatever they can up top. Lots more power to be had, crank it up! Don't be afraid
Does this help with boost at higher rpms?
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Old Sep 1, 2008 | 11:27 AM
  #63  
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Originally Posted by mrfred
Does this help with boost at higher rpms?
It can a tad with the stock actuator. I've seen a couple a little loose from the factory. Just don't crank it down too much or you will get spikes you can't control.

The airbox is limiting your top end boost more so imho.
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Old Sep 1, 2008 | 03:28 PM
  #64  
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Originally Posted by razorlab
It can a tad with the stock actuator. I've seen a couple a little loose from the factory. Just don't crank it down too much or you will get spikes you can't control.

The airbox is limiting your top end boost more so imho.
Yeah, I remember reading your post about switching over to your stealth airbox setup. How loud is that setup compared to stock?
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Old Sep 2, 2008 | 06:53 AM
  #65  
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Originally Posted by mrfred
I started pushing up the boost this weekend. No problem getting as much boost as I want in the 2500-5000 rpm range, but the best I can get at 6000 rpm is 23.5 psi, and by 7000 rpm, best possible is 20 psi. I suspect that part of the issue is the boost control setup being tapped out, but I think my intake setup is holding things up too. Still on the stock airbox with just a hole cut in the side of the lid. Still have the stock FMIC, but I'll be installing an ETS 3.5" FMIC sometime this coming week. Hoping I can get at least another psi from that. I hate loud intakes, so not sure what I'll do with the intake as the exposed element ones are very loud.
you could go with something like that?

http://www.airpowersystems.com/us_sp...evo-hfa_01.htm

I havnt heard it on a car yet, but I imagin it should be much quiter than just the filter under the hood deal and an improvment over the box.....
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Old Sep 2, 2008 | 07:18 AM
  #66  
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Any open air element is going to be louder, just a fact of it being more like a speaker than a muffler. Stick with the stock air box and a good drop-in filter, otherwise it'll just get louder. I personally love the sound of an open element intake, so I went that route, and am able to hold decent boost to redline.

Yes cranking the WGA will help, it'll throw your BWGDC values all off, but it should help in the end. Also, just running more peak boost will help the end of your taper; it'll still taper but your end result will be more boost up top.

Here's my cranked WGA/GM BCS/open element/ix turbo on a viii/etc. result:

(this is on BP92/meth but you get the point)

Crank the boost up, seriously. That's what E85 is for
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Old Sep 2, 2008 | 08:17 AM
  #67  
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Originally Posted by denver
you could go with something like that?

http://www.airpowersystems.com/us_sp...evo-hfa_01.htm

I havnt heard it on a car yet, but I imagin it should be much quiter than just the filter under the hood deal and an improvment over the box.....
I'd love to have that one, but it doesn't clear the ACD hardware.

Originally Posted by scheides
...

Crank the boost up, seriously. That's what E85 is for
I'll increase the tension by one turn to see what that does.
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Old Sep 2, 2008 | 08:28 AM
  #68  
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^^ Thats to bad, I didnt even think about that.....
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Old Sep 2, 2008 | 09:11 AM
  #69  
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Originally Posted by scheides

Here's my cranked WGA/GM BCS/open element/ix turbo on a viii/etc. result:
Just keep in mind the 8's hold more boost on "stock" turbos than the 9's do.
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Old Sep 2, 2008 | 10:54 AM
  #70  
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Really? You mean a VIII with an IX turbo will hold more boost than an IX with an IX?

I have not noticed this!
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Old Sep 2, 2008 | 10:55 AM
  #71  
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Originally Posted by mrfred
I'll increase the tension by one turn to see what that does.
I mean run like 27-28psi peak. It's worth it!
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Old Sep 2, 2008 | 11:24 AM
  #72  
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Originally Posted by scheides
I mean run like 27-28psi peak. It's worth it!
I'm pretty sure that I can do 28 psi peak no problem. I'll raise up the boost at lower rpms after I see what I can do at the higher rpms. :-)
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Old Sep 2, 2008 | 12:54 PM
  #73  
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Originally Posted by scheides
Really? You mean a VIII with an IX turbo will hold more boost than an IX with an IX?

I have not noticed this!
On average yes. I contribute it to head design and mivec.

More boost does not always mean better. On some Evos with stock or variant turbos I have made more power with less boost. It all depends on what the car likes and of course the setup.

The Evo 8 I posted a thread about that held 24psi at 7800 actually ended up making more power with less boost. It wasn't an octane issue either as it was running 110 octane.

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Old Sep 3, 2008 | 01:47 AM
  #74  
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what size Injectors? when coverting to e85
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Old Sep 3, 2008 | 07:16 AM
  #75  
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With stock turbo and basic bolt on's, 1000cc should be enough. If you've upgraded your turbo, 1200cc might be in order.
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