stock boost psi?

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May 21, 2010 | 03:36 PM

#16

juanpdu

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Joined: Aug 2009

Posts: 63

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From: uruguay

Quote:

Originally Posted by 911_Evo

I dont understand what you are saying about the boost taper. You want "like 22 all the way" ? Where did you come up with that number? I have an 8 with the 10.5 hotside, and I have been running 25 psi, tapering down to 20, for well over 100,000 miles on a stock block. So, no, it is not necessary. Do I WANT head studs? Sure do. -s

that number i think because more than 22psi with pump fuel here in uruguay its 95 octane will knock. and if i take timing maybe i can run 25 psi but the power will be nearly the same . am i wright??? thanks

May 21, 2010 | 03:39 PM

#17

ReapingEVO

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From: New Jersey

Stock MR 19 psi

Aug 21, 2010 | 06:41 PM

#18

juanpdu

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Joined: Aug 2009

Posts: 63

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From: uruguay

stock evo 9 edm 13 psi peak 10 psi redline . this suc...s

Dec 29, 2010 | 12:23 PM

#19

auto228

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From: NYC

Quote:

Originally Posted by juanpdu

stock evo 9 edm 13 psi peak 10 psi redline . This suc...s

that's real sucks !!!!!!!!!!!!!

Dec 29, 2010 | 12:41 PM

#20

Boosted Tuning

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From: Chico, CA (Nor-Cal)

Quote:

Originally Posted by juanpdu

stock evo 9 edm 13 psi peak 10 psi redline . this suc...s

That is not stock boost. You have a problem with your stock BCS and/or stock boost lines

May 8, 2012 | 01:02 AM

#21

fastcars4life

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Joined: May 2011

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From: United States

I thought evo 9's were boosting at 19 and taper off at 16. is that right?

Oct 6, 2012 | 10:11 AM

#22

Vitaliy_enjoi

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Joined: Jan 2011

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From: Harrisonburg, VA

18ish

Aug 24, 2018 | 08:53 PM

#23

Rabi Ahmad

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Joined: Aug 2018

Posts: 1

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From: Islamabad

9.5 psi boost on my stock Evo IX?

Quote:

Originally Posted by ReapingEVO

Stock MR 19 psi

Installed HKS EVC-S on my Evo.
It was showing 9.5 psi boost (on factory setting), don’t know why.
Now I have set it to 15 psi, and its performing great now.
Doesn’t perform well beyond 16 psi, I was wondering what might be the issue.

Current Boost-Controller Settings :

Offset : 60%
Response : 20%
Drop : 5%

Warning : 10.5 psi
Over-Boost : 17 psi