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Old 01-08-2015, 04:08 PM   #1
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How much boost

I just got my car turboed and am wondering how much boost you guys are running in your frs/brz.
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Old 01-08-2015, 04:51 PM   #2
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Need to be more specific. What turbo? What turbo kit, if one? What fuel? What fuel system upgrades?

I run a conservative 11psi on a PTE5558 on E85. I don't have a "kit" setup.
People run 5psi on AVO kits.
People run 1 bar on AVO kits.

See where I'm going with this?
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Old 01-08-2015, 04:52 PM   #3
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Old 01-08-2015, 05:07 PM   #4
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Old 01-08-2015, 05:08 PM   #5
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10psi Kraftwerks C38 (94 octane pump) really conservative tune here.
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Old 01-08-2015, 05:12 PM   #6
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All the boosts.
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Old 01-08-2015, 05:14 PM   #7
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Originally Posted by robr View Post
Need to be more specific. What turbo? What turbo kit, if one? What fuel? What fuel system upgrades?

I run a conservative 11psi on a PTE5558 on E85. I don't have a "kit" setup.
People run 5psi on AVO kits.
People run 1 bar on AVO kits.

See where I'm going with this?
I wasnt really asking what to run on mine im just seeing what other people are.

Im running 10-11 psi on a 60trim garret turbo 93 oct stock injectors and pump 310whp
but I daily drive so I ussually set it at 8psi
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Old 01-08-2015, 05:31 PM   #8
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I wasnt really asking what to run on mine im just seeing what other people are.

Im running 10-11 psi on a 60trim garret turbo 93 oct stock injectors and pump 310whp
but I daily drive so I ussually set it at 8psi
You are gonna need to change out those injectors before you can think about upping the boost.

Also, I wouldn't run anymore than the boost you are already runnin on pump gas.

Go E85 if you want more.
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Old 01-08-2015, 05:32 PM   #9
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You are gonna need to change out those injectors before you can think about upping the boost.

Also, I wouldn't run anymore than the boost you are already runnin on pump gas.

Go E85 if you want more.
I wasnt gonna go past 11 on stock injectors and pump. But I have a few e85 stations around me. I daily drive so what is gonna be the pros and cons of e85. And youre saying after I get injectors and pump I shouldnt run any more boost on 93?
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Old 01-08-2015, 05:53 PM   #10
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Micro Pascals right?
Nope more than that.
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Old 01-08-2015, 05:57 PM   #11
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I wasnt really asking what to run on mine im just seeing what other people are.
Gotcha. Still a rather vague question. 11psi from Turbo A isn't the same as 11psi from Turbo B.

As to E85, the only real "negative" is fuel mileage. But you can lean out your cruising AFR a good deal to make it back some. I average ~24mpg highway on E85, ~21mpg mixed, both with a good amount of boost usage. So it's certainly not terrible mileage.

And I wouldn't increase your boost on pump gas regardless of what pump and injectors you go to. On E85, yes, turn it up a bit.
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Old 01-08-2015, 07:18 PM   #12
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In for the answer. This topic hasn't been covered yet; I am curious as well.
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Old 01-08-2015, 07:39 PM   #13
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lol
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Old 01-08-2015, 08:28 PM   #14
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