Boost Question

[combatmedic]

I have a question, my bov is being run to the boost solenoid than t'd off of that it goes to the wastegate and j pipe. Is this right or should the bov be ran to the intake manifold and wastegate ran to the j-pipe. If the second one is right what hooks up to the boost solenoid.

 

[beniger]

the BOV should be straight to the intake mani, and your mbc should be right where the stock boost-solenoid is. That is 1 vac line to the intake tube and the other vac line to the j pipe that also T's off to the waste gate actuator

 

[MrBoxx]

Correct. Do not tap the BOV line for anything. It should be one continuous line from the intake manifold to the valve.

Your turbo pressure signal should come from the J-pipe/intercooler pipe OR the compressor housing. Whether it be for an MBC or if you just want to run wastegate pressure (no boost control device between IC pipe and wastegate) you should use a line as close to the compressor as possible.

 

[Chaosweaver]

I have my MBC T'd off of the BoV, so far, no problems.

 

[beniger]

I'm just working according to the factory diagram, i've also heard that your boost spikes more often off of the bov and more accurate from the compressor cover. Most boosted cars are off of the compressor cover or j pipe even my holset hx 35 has the vac line on the cover.

 

[combatmedic]

so run the bov to the intake mani and run the wastegate to the j-pipe.
what hooks up to the boost solenoid??
If I run a mbc I put it between the j-pipe and wastgate??

also why is it I hear a rattling metal sound when I get on it??
and my bov sounds like it studders instead of just a hiss of air??

 

[MrBoxx]

What kind of BOV do you have? If it's an adjustable BOV (greddy style or such) then it's probably adjusted improperly.

I have my MBC T'd off of the BoV, so far, no problems.

You have just created a boost leak in your BOV line. Since the BOV operates on a difference of pressure, and you're altering how that pressure is received, you're changing when and how your BOV will release pressure. So, don't tap it.

 

[combatmedic]

I have one of those knock off Greddy ones that are adjustable, should I make it harder or softer?

 

[Mock]

I have my MBC ran from the comp housing of a t-25 and then to the wastegate. Im about to toss this To-Slow25 but for the time being is this MBC ran propertly?

 

[beniger]

there should be a t line right in front of the compressor housing and from the actuator one line goes there and the other goes to clean air nipple on the snorkel right after the maf. It should take the place of the boost soleniod