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Aftermarket BOV? Want Free Boost? Turbosocks Hack!

177064 Views 355 Replies 89 Participants Last post by  trdtoy
3
sorry the title should be 3psi! :cool2:

try TEE'ing off vacuum line from the throttle body. Thanks to turbosocks for this brilliant idea.

this morning i was peaking 16.5psi few days ago(same setup) now just by tapping the vacuum/boost line right at the throttle, i'm peaking at 19.4psi!!!

wow what a difference. FREE HORSEPOWER? what can you lose?

unhooked both hose from solenoid and hooked up the top hose from the T.

i don't know all the dimensions bc i had these parts laying around the garage but universal T, Vacuum Line, and Clamps Can be had at advance auto parts easy

at first, computer didn't know and it peaked at 21.5psi and put the car in limp mode...but after a quick restart...smooth!







EDIT By Turbosocks:

What you will need if you do not want to cut the line: (Keep in mind, waiting on my MAP flange will give almost the same result)

small piece of 5/16" vacuum hose
5/16"-5/16"-1/8" tee
~2 feet or so of 1/8" vacuum line to connect the BOV to the tee
about 20 minutes or less of your time
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I want, I want. DIY?
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told you the peak boost pressure was a bit higher bypassing the solenoid!
yes he told you so... now go do it! lol

having a smart phone, free app, and BT dongle helps in figuring out the numbers
What does that equate to in HP? Just curious
this completely bypasses the stock solenoid? also do you have any data logs to make sure this doesn't cause knock/ bad afrs? also... what does it hold to? I have a manual boost controller in the trunk of my other car I might have to run on the car if it's that easy lol hell i'll do it at the shop friday when I pick up some more FMICs lol
no log... just saw peak psi

it just appears that the solenoid is controlling the BOV opening much like the wastegate

but when i did peak 21.7psi it went in limp mode.
no log... just saw peak psi

it just appears that the solenoid is controlling the BOV opening much like the wastegate

but when i did peak 21.7psi it went in limp mode.
you should get logs if you can.. I'd like to see the other effects of it prior to endorsing it.. there are alot of things that can go wrong by doing something like this
this is the internet. readers make their own educated decision :)
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this is the internet. readers make their own educated decision :)
i understand that, however other people will be able to make a better informed decision if you get logs too :)
AFRs are hardly affected. Still in the <11:1 from 4900-6750rpm. 5600-redline is <10.3:1

However, I have to look at some old logs to check out the timing on WOT runs and compare them to older logs that I have just to make sure. I just want to make sure that the timing looks around the same. Since this is only peaking slightly higher than stock, I can't see there being that much of a change into 'dangerous' territory or even borderline into feeling uneasy, specially with our ultra conservative stock tune.

Between both of my logs, boost was settling down around 14lbs.

Obviously, going by pressure alone means nothing as the effect of weather and DA will be different all over the country slightly.

EDIT:

Here are a couple logs: One on left is from January pre-Magnaflow and solenoid bypass. One in the middle is the other day after Magnaflow and solenoid bypass. The one on the far right another post Magnaflow/solenoid bypass with some graphs.



Don't take too much weight on slight variations in timing from log to log as the weather was quite different in each log. In one log, it was January, in another it was actually raining and the other was dry outside and warmer.

You can also see around where third gear tops out :p At 80+ mph.
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Does bypassing the solenoid throw a CEL?
I saw a gencoupe guy do this, and there's no CEL if keep the solenoid electrically connected. Just take off the vac lines.
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So all I do is unplug the bottom tube on the BOV ?
I am throwing a CEL still because I still am running the 2 spring setup. I will not be running a CEL after I remove the small spring though because the solenoid is still hooked up!

no, you will actually have to tee into the line above the throttle body like in the picture. You will have no lines connected from the solenoid to the BOV and only the TOP BOV port connected to the line at the tee.

I can't vouch for how this might work or not work using a stock BOV setup on stock intercooler though.

The stock intercooler port that goes to the solenoid would need to be plugged also.
I might try this on the stock one this weekend, but I do not have any way to log at the moment, so I should prob wait.
No reason to wait to at least try it.. The logs above show that there is nothing really changing with the timing or the AFR with the bypass. The stock BPV works in pretty much the same manor as an aftermarket BOV sans the line going from the IC to the solenoid. You should be able to leave that line connected and cap the empty line or cap it at the intercooler.
told you the peak boost pressure was a bit higher bypassing the solenoid!
So what is it that I need to buy from you?

I think the bike rack can wait. I WANT FREE PONIES
Hmmm, ok, you convinced me socks. I am trying it. I will draw up a little diagram and post it up to make sure I am doing it correctly in an hour or two, just so you can confirm for me lol. I am better with visuals, being an artsy person.
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