How much boost do you run..?

[AndysR]

As requested by Merc85.....

How much boost do you run and is that with or without a dump valve?

[t5_monkey]

17 psi with a forge recirc

[AndysR]

I run 20.5 psi without a dump valve, recirc or atmospheric.

[t5 pete]

1.25 bar with forge dv

[LiamT4]

Not much! lol

No dumpvalve, not really a fan, i prefer the more natural noise of an induction kit.

13psi although i'v been told it should be running 16-17psi.

[merc85]

Have been Runing/trying to run Standard recirc valves at 17psi keep blowing holes/not holding boost etc Doh

Was also runing a Bailey DV26, Never again lol

[leet5r]

not enough lol , what ever you want really , ran a bar for over 2 yrs no probs , on me 3rd turbo tho lol , seen some evos run 55psi

[merc85]

not enough lol , what ever you want really , ran a bar for over 2 yrs no probs , on me 3rd turbo tho lol , seen some evos run 55psi

pmsl, 3rd turbo, i'm on me 3rd recirc lol Turbo next pmsl

[WOODY T5]

1-3 to 1-45 bar here.hks dump

[merc85]

1-3 to 1-45 bar here.

Dv?

[glock19]

1.4 bars, Recirc, but tougher spring inside. Internal wastegate (19T) adjusted against creep only.

[jardon]

21 psi with the stock BCS, Forge 1 bar actuator and standard recirc.

The standard recirc is not a problem for anything a stock turbo can throw at it so not worth "upgrading". They can fail though so worth investigating if losing boost. Bear in mind that all the stock turbos will fade if pushed above stock boost - my 19t will hold 21 psi up to 5000 rpm but drops to 17 psi at 6000 and 16 at 7500 rpm. They saturate quickly due to the small turbine. None of them will hold high boost to high rpm even if fitted with a big compressor wheel - big mid range torque is their forte. I have never had a true boost leak but did blow out the IAT sensor and the top charge pipe once. What does your boost do at WOT Merc?

[merc85]

21 psi with the stock BCS, Forge 1 bar actuator and standard recirc.

The standard recirc is not a problem for anything a stock turbo can throw at it so not worth "upgrading". They can fail though so worth investigating if losing boost. Bear in mind that all the stock turbos will fade if pushed above stock boost - my 19t will hold 21 psi up to 5000 rpm but drops to 17 psi at 6000 and 16 at 7500 rpm. They saturate quickly due to the small turbine. None of them will hold high boost to high rpm even if fitted with a big compressor wheel - big mid range torque is their forte. I have never had a true boost leak but did blow out the IAT sensor and the top charge pipe once. What does your boost do at WOT Merc?

Boost's 18psi Drops harshly down to 15.5 psi. Have tested the Recirc with a vac pump, and it does not hold Boost.

[jardon]

Boost's 18psi Drops harshly down to 15.5 psi. Have tested the Recirc with a vac pump, and it does not hold Boost.

How are you controlling boost? I'm out of depth on MBC's etc but unless the reciec valve is visibly faulty I would say the fault lies elsewhere.

[mitchyboy01]

My T4 runs 22psi from remap previous owner did. In for Walbro today so hopefully the stuttering issue will be sorted!!

[merc85]

How are you controlling boost? I'm out of depth on MBC's etc but unless the reciec valve is visibly faulty I would say the fault lies elsewhere.

The Boost is controlled with the MBC, The recirc has been vac tested, and has proved faulty, as it does not hold any Vac.

[smithson007]

1.25 bar with forge dv

Same Here!

[BlackBeast]

25psi to 7500rpm, but it does tend to overboost to 28psi when the temps are low. Thats with a Forge 004 dump valve and 1bar actuator.

[Jim S70R]

Running 1.2 bar

[JelT5]

Zero at the moment because my engine went pop lol

Usually around 1.2-1.4 bar when it's working