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Old Jan 10, 2010 | 12:26 PM
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Default Boost?

Interested to hear what boost levels you guys are running? My car is being run in at the mo & will be remapped at end of Jan. Previous owner says it will be OK to run 2bar ...

Cheers, TX.

PS - spec is CDB, forged pistons, MD321T turbo etc.

Last edited by Terminator X; Jan 10, 2010 at 02:00 PM. Reason: added the "t"
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Old Jan 10, 2010 | 12:41 PM
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newage STI PPP - remap to 1.45 bar (i think!) Max you can run a VF35 is around 1.5 (again i think ha ha)
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Old Jan 10, 2010 | 12:43 PM
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Would have said a cdb with decent internals will run 2bar happily.
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Old Jan 10, 2010 | 01:30 PM
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Hawkeye STI 1.4 bar (safe map) could of gone a little higher but was happy with 333 bhp for my every day work horse
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Old Jan 10, 2010 | 01:50 PM
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Newage STI 1.7bar on MD195S
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Old Jan 10, 2010 | 02:19 PM
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2bar is alot of boost. Some people seem to get infactuated with running high levels of boost.

The key is to find a turbo spec that meets your power goals, ideally without having to run such high boost levels. For some builds this is not an option, but for 95% of us it is.
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Old Jan 10, 2010 | 02:32 PM
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From: Newcastle. 330bhp-289lb/ft @ 1bar boost - 12.4s @ 105mph
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1 bar.
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Old Jan 10, 2010 | 04:31 PM
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Mine has reached 2 bar, due to a hose failure, but is mapped to 1.7 bar with cold weather overboost to 1.8... std 2002 STI motor.

HTH

dunx
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Old Jan 10, 2010 | 04:34 PM
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Originally Posted by dunx
Mine has reached 2 bar, due to a hose failure, but is mapped to 1.7 bar with cold weather overboost to 1.8... std 2002 STI motor.

HTH

dunx
I wont say what mine 'has' reached

2 bar on that spec should be fine TX if decent heads gaskets and build. I doubt you would want to hold 2 bar to redline (even if it could)
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Old Jan 10, 2010 | 04:43 PM
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Mine had a boost solenoid failiure a while back, hit 2.3 bar on the road!

Glad that got fixed.
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Old Jan 10, 2010 | 04:46 PM
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still got a few things to do on mine yet but once they're done it'll be sitting somewhere around 2bar, maybe 2.2
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Old Jan 10, 2010 | 05:02 PM
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Originally Posted by dynamix
I wont say what mine 'has' reached
Is that on the current engine that i rebuilt Dunc?

Note to self: WARRANTY VOIDED BY CUSTOMER


My setup is a 2.35 with GT35R - Running 2.1Bar to the 8500 rev limit

Last edited by FB Tuning; Jan 10, 2010 at 05:06 PM.
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Old Jan 10, 2010 | 05:15 PM
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Originally Posted by fiestaboy
Is that on the current engine that i rebuilt Dunc?

Note to self: WARRANTY VOIDED BY CUSTOMER


My setup is a 2.35 with GT35R - Running 2.1Bar to the 8500 rev limit
Yes mate ... I have accidentally hit 2.8 bar

Jeesh it flew !!
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Old Jan 10, 2010 | 05:20 PM
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Mine is mapped to 2.2bar
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Old Jan 10, 2010 | 05:32 PM
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Mine is mapped to 1.75 bar,2.3l,gt35r
i have seen a peak of 31psi on the e-boost 2 but was hitting boost cut (autronic) later found a split servo to inlet mani pipe !!!!!

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Old Jan 10, 2010 | 05:35 PM
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is that at the wheels?
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Old Jan 10, 2010 | 05:39 PM
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Ye.

@ fly

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Old Jan 10, 2010 | 05:42 PM
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with stock heads? - I'd expect to be seeing a bit more than that
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Old Jan 10, 2010 | 05:47 PM
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Really ?.
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Old Jan 10, 2010 | 06:13 PM
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On a freshly rebuiilt 2.35 (under 200 miles) with fully built up heads, i think i saw 535hp @ 1.7 Bar - granted that was using some WI, but quite a safe AFR (similar to yours)

So, i guess you're not really much down on power (but should be able to find some more with a bit more boost )
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Old Jan 10, 2010 | 06:39 PM
  #21  
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What do you run yours at fella (realize that it's a bit "special") + what do you think is a reasonable level for any particular turbo?

TX.

Originally Posted by Shaun
2bar is alot of boost. Some people seem to get infactuated with running high levels of boost.

The key is to find a turbo spec that meets your power goals, ideally without having to run such high boost levels. For some builds this is not an option, but for 95% of us it is.

Last edited by Terminator X; Jan 10, 2010 at 06:40 PM.
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Old Jan 10, 2010 | 06:45 PM
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I don't how restrictive the exhaust wheel and housing is on a MD321T, but i couldn't run more than 1.65Bar on a 2.35 with MD321s - Upping the Boost Valve Duty Cycle didn't make the boost go up at all.

That setup made 496hp with Water Injection
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