IPD - Volvo Parts SpecialistsVolvo PartsVolvo Salvage: Used Volvo Parts and Over 50 Years ExperienceSouthern Vo Vo sells genuine used Volvo parts

Please use this Amazon link ... and help keep MVS on the Web. Thank you!Amazon.com

Advertise here via Google

Login

Not part of the forums? Register. It's free.

Need help? See our Help Page.

Manual Boost Control opinions wanted

How to go faster, stop quicker, and turn harder. Chips, exhaust, larger turbos, bigger/slotted/drilled rotors, high performance brake pads, manual boost controllers, performance shocks/struts/springs, airbox mods and more! Also discussion on HID and Xenon lights, aftermarket foglights and other exterior lighting.

Manual Boost Control opinions wanted

Postby msm15 » 05 Apr 2009, 14:07

Any suggestions on a manual boost controller ?
msm15
Forum Member
Forum Member
 
Posts: 191
Joined: 18 Sep 2008, 01:34

Re: Manual Boost Control opinions wanted

Postby vegasjetskier » 11 Apr 2009, 04:34

Just say NO.
.

SOLD - 2001 Volvo S80 T6: Mobil 1 Oil & Synthetic ATF, Brake Performance drilled and slotted front rotors, Akebono Euro Ceramic pads and Yokohama Avid V4S tires, 91K miles.

Help this site: Amazon.com link, Tirerack.com link, Donate
User avatar
vegasjetskier
MVS Moderator
MVS Moderator
 
Posts: 1844
Joined: 17 Dec 2007, 01:35
Location: Fernandina Bch, FL Formerly - Las Vegas, NV
Model and Year: 2010 Toyota Prius

Re: Manual Boost Control opinions wanted

Postby csbrianp » 13 Apr 2009, 15:01

3barracing.com sells Manual Boost Controllers for $40, the install in minutes and help increase the boost on your turbo. Beware, the 850 turbos have a fuel cut at 15lb of boost, so after installing your MBC if your car really starts accelerating quickly (and it will) then shuts down you have the boost too high. Even if you turn the boost down you still might hit fuel cut on cold mornings.

Brian
csbrianp
Forum Member
Forum Member
 
Posts: 52
Joined: 25 May 2004, 00:00

Re: Manual Boost Control opinions wanted

Postby volvslow » 06 Jan 2010, 03:00

i just received mine today actually! got it on ebay. i did some research on the cheap, no name brand manual boost controllers on ebay (oh you know they say "high performance turbo controller" on em). turns out some folks have written good reviews about them. its black includes the control valve, extra long vacuum tubing (to install in cabin), mounting hardware, etc... it controls 1-25 psi. 18.00 usd. probably going to drill a hole in one of the blank plates behind the steering wheel under the cluster and mount it there. figured i set it at a conservative 10psi. there is one that is cheaper. it just doesnt include enough vacuum line to run it in the cabin. but i see this being difficult to adjust. exmaple: floor it 50mph and watch the boost gauge, stop, pop hood, get out, open hood,adjust little knob, get in, floor it to 50mph watch boost gauge, stop adju.........get a boost gauge if you dont already have one.
volvslow
New Member
New Member
 
Posts: 11
Joined: 06 Jan 2010, 02:21
Location: dallas ga
Model and Year: 1998 volvo s70 turbo

Re: Manual Boost Control opinions wanted

Postby dbm123 » 15 Jul 2011, 14:47

I thought about doing this to get a little more boost out of my V70 GLT..... does anyone have a pic showing the best way and place to put one of these inline if you do want it in the engine compartment????
Current Volvos:
2004 C70 HPT (wife)
2002 S40 1.9T (daughter)
2001 V70 XC (daughter)
1999 V70 GLT (now dead)
1998 V70 GLT (son)
The other car: 2003 Saab 9-3 SE Convertible (mine)
User avatar
dbm123
Forum Member
Forum Member
 
Posts: 163
Joined: 01 Dec 2010, 19:35
Location: Ohio
Model and Year: 1999 V70 GLT

Work on negative pressure, positive pressure, or both?

Postby chax » 12 Jan 2012, 20:32

My assumption was that an MBC would be installed between the boost control valve and the wastegate servo. I started looking for one on ebay, and got the impression that they might be installed in negative pressure vacuum lines only, and might not even be made for the positive pressure sent by an 850's BCV. This idea is supported by several schematics I saw of installation options. Assuming this is true, where would an MBC valve be installed in a '94 850 turbo? Or is my notion that they only work with negative pressure incorrect?
Thanks for your input!
chax
Forum Member
Forum Member
 
Posts: 50
Joined: 05 Nov 2008, 21:46

Manual Boost Control opinions wanted

Postby D_V_ENT850R » 13 Jan 2012, 00:45

I ha e a boot controller on my car it's hooked up inline from the turbo outlet to the waste gate. It's tee-d off to the TCV so the ECU can still compensate for fuel and timing! I'm running the R @ 14psi steady! On the cold days the boost goes higher but I have tracked and marked down my settings for my MBC. It's got a scale marked on it that helps with settings I have 2 settings recorded one for warm days over 70 and days colder that 70. It helps not having to keep setting it everyday! Setting it up was yes, a little bit of a pain with driving pulling over setting and driving again but now that I figured it out it's fine. I bought a Prosport MBC $49.00. Really recommend an actual boost gauge not just the needle on the dash! That helps I'll see if I have any pics to post that might help if you need them!
User avatar
D_V_ENT850R
Forum Member
Forum Member
 
Posts: 208
Joined: 03 Aug 2011, 23:02
Location: SWFL
Model and Year: 850R 1996

Re: Manual Boost Control opinions wanted

Postby tecatematt » 14 Jan 2012, 23:50

I have a MBC laying around, reading this makes me tempted to try it.
tecatematt
 
Posts: 1
Joined: 14 Jan 2012, 23:38
Location: Chapel Hill, NC
Model and Year: 2001 v70 T5

Re: Manual Boost Control opinions wanted

Postby dtm » 23 Feb 2012, 11:24

Installed mine this morning, in my S40 T4, and have set it to 1.2BAR, about 17.40456 PSI.

I have read quit a bite about this and without ECM/ECU remapping its as high has I should go.

According to my math the engine gained about 31bhp. I made mine. It costed me 10,80€. Very cheap way to gain horsepower.

My car is running on LPG, and because of the extra boost pressure I will have to adjust the LPG pressure as well, otherwise it keeps reverting to gas.

So far the engine runs very well and without a glitch.

Here is a photo of mine:
Image
dtm
 
Posts: 4
Joined: 24 Oct 2011, 12:01
Location: Portugal
Model and Year: 2000 S40 T4

Re: Manual Boost Control opinions wanted

Postby SweedSpeed » 22 Apr 2012, 03:13

Hoping you guys can help me out...

I installed a MBC inline from the TCV to the wastegate. It does indeed work well, holding at 10 lbs as it was set to, but it does not allow the TCV to regulate boost pressure in the low gears. So rather than 5lbs in 1st and 2nd, where I set the actuator arm, it builds 10lbs in ALL gears and I'm really not tryin to buy a new cam shaft. Any ideas on how use the MBC so that the TCV will control boost in the low gears but allow more pressure to 3-5?
SweedSpeed
Forum Member
Forum Member
 
Posts: 27
Joined: 21 Aug 2011, 02:27
Location: Midlothian Va
Model and Year: s60T 2001

Re: Manual Boost Control opinions wanted

Postby SweedSpeed » 23 Jun 2012, 01:37

dtm wrote:Installed mine this morning, in my S40 T4, and have set it to 1.2BAR, about 17.40456 PSI.

I have read quit a bite about this and without ECM/ECU remapping its as high has I should go.

According to my math the engine gained about 31bhp. I made mine. It costed me 10,80€. Very cheap way to gain horsepower.

My car is running on LPG, and because of the extra boost pressure I will have to adjust the LPG pressure as well, otherwise it keeps reverting to gas.

So far the engine runs very well and without a glitch.

Here is a photo of mine:
Image


Hey dtm - wondering if you can give me some pointers on how you installed the MBC? The current configuration I'm using allows the TCV to calculate/ regulate boost and keeps it below 6 lbs (where I have the actuator arm set) so as not to damage valves/ cam shaft in 1st and 2nd gears, but won't allow the pressure to get any higher. The original suggestion suggested installing the MBC inline from the TCV to the waste gate, but that allowed way too much pressure to build (whatever the MBC was set at) in low gears. I;m out of the danger zone but cannot utilize the MBC!! Please help if you can. Thanks!
SweedSpeed
Forum Member
Forum Member
 
Posts: 27
Joined: 21 Aug 2011, 02:27
Location: Midlothian Va
Model and Year: s60T 2001

Re: Manual Boost Control opinions wanted

Postby dtm » 23 Jun 2012, 20:52

Hi,

Not sure I understand your issue. Way shouldn't the car hold has much boost with low gears has it does with higher ones? Valves and cam shaft rotate at the speed in every gear. The TCV (is it some king of boost control solenoid?) if it works like BCS, is regulated by the ECU/ECM and regulates boost according to the parameters set by the ECU/ECM. If you hook a MBC in line with the BCS, before or after, the boost should be the one set by the controller with the higher settings. With an MBC you cannot regulat different boosts according to the gears. You set a boost of 17psi or what ever and that is what it should do through every gear. If the actuator arm of the wastegate is set to a very low boost you could andup with a wastegate not strong enough to hold the flap closed (it is happening to me). The turbulence coming from the exhaust gases is strong enough to open the wastegate flap and release boost pressure before the intended value. I'm about to install a helper spring to hold the boost set by the MBC. The best way to do it is to get a new wastegate with a stronger spring.
The only way to do what you intend is with a remap, where you can choose the max amount of boost in every .

Good luck
dtm
 
Posts: 4
Joined: 24 Oct 2011, 12:01
Location: Portugal
Model and Year: 2000 S40 T4

Re: Manual Boost Control opinions wanted

Postby SweedSpeed » 04 Jul 2012, 03:16

dtm,

Thanks for taking the time to answer. To speak to your first question, I am told by persons far more qualified than I (to include some of the folks at IPD) that too much pressure in the low gears will bend rods and possibly even the cam shaft. They have recommended not exceeding 4.5 lbs in first and second gear though I see a lot of guys pushing 6 lbs. It is also recommended that one should not exceed 12-13 lbs total unless you're talking about the R series engine.

As for the TCV, yes, it is a boost control solenoid. This one comes from IPD and they call it the Turbo Control Valve. It is regulated by the ECU. The wastegate, or compressor bypass valve, was upgraded with a heavy duty spring good for up to around 15 lbs, so I;ve got that covered. I see what your sayin about the boost pressure defaulting to the one with the higher setting. Perhaps the only answer is a proper tune.

Thanks again
SweedSpeed
Forum Member
Forum Member
 
Posts: 27
Joined: 21 Aug 2011, 02:27
Location: Midlothian Va
Model and Year: s60T 2001

Re: Manual Boost Control opinions wanted

Postby dtm » 04 Jul 2012, 09:27

Hi SweedSpeed,

Good luck with that.

Cheers,

Daniel
dtm
 
Posts: 4
Joined: 24 Oct 2011, 12:01
Location: Portugal
Model and Year: 2000 S40 T4

Next

Return to Performance, Tuning & Aftermarket

Who is online

Users browsing this forum: No registered users and 5 guests