Stock Boost [Merged 5-7]

[Gs-tHaVoC]

hehe kinda dumb question but whats stock boost on my car? just wondering if its worth it to install a boost controller and gauge without bov thats all. thanx

 

[lordnikon_04]

yeah order yourself a new b.o.v. with that fmic

 

[lordnikon_04]

oh and get a mechanical boost gauge too. that is an absolute must if you get a boost controller

 

[blcknspo0ln]

As much as that crappy plastic BOV can hold . That's supposed to be one of the first upgrades http://www.dsmtuners.com/sub.php?page=2gtstage1power

Agreed. I take it you are new to DSMs. Read the FAQ that Madman posted, it is our "guideline to success" that has been compiled by many who have come before you. The only thing I need to add to the FAQ is maintenance. Please understand that although cranking up the boost and getting a nice shiney FMIC is very alluring, make sure you keep up with ALL of your maintenance prior to modifying your car. This will not only ensure you a long happy relationship with your car, but it will make it capable of producing the most power for your setup. Oh and if you have any additional questions, refer to our "search" button, as most questions have been answered a thousand times over

If you're free this weekend, come to our meet and hang out with us old-timers (I'm only 22 ); I guarantee you will have a good time and learn a lot in the process!

http://www.dsmtuners.com/forums/showthread.php?t=265463&page=15

 

[No_Skillz]

If you're free this weekend, come to our meet and hang out with us old-timers (I'm only 22 ); I guarantee you will have a good time and learn a lot in the process!

Geeze Tom, sometimes you're creepy.

And after you do your maintenance, boost leak test, boost guage, and MBC... the answer is 15psi max (and you should do your boost leak test to 20psi). More and you will need fuel and tuning upgrades.

 

[blcknspo0ln]

Geeze Tom, sometimes you're creepy.

And after you do your maintenance, boost leak test, boost guage, and MBC... the answer is 15psi max (and you should do your boost leak test to 20psi). More and you will need fuel and tuning upgrades.

why am I creepy? I thought that was bruce's job. Besides, I meant old-timers as in guys that have been around DSM's for a long time.

Also, I don't particularly recommend gonig about stock boost pressure if you have no fuel mods. If you dare to, make sure you have some means of monitoring knock/timing/etc since running that much boost may cause adverse effects on an otherwise stock engine.

 

[anthony2658]

on my turbo itt sounds like it over spools it makes a weird noise ### could that be?

 

[LandoAWD]

Assuming Ohio still speaks English, please try to use English.

 

[dre5491]

I've looked all over the internet. No boost controller or anything along those lines. How many pounds does a stock Talon run? I've googled it I've searched it on other forums and all I find is how much can the stock turbo run which isn't what I need. So.. If you could please help me out how many pounds do our cars run stock. All thats done to my car is exhaust and intake theres no turbo mods what so ever done so it is still on stock tune and stock PSI.

 

[mindset]

According to vfaq.com

"1G cars have a stock boost pressure of 8-12 psi. 2G cars have 10-15 psi. The service manual allows lower pressures, but those are rarely seen in actual vehicles. "

 

[dre5491]

Well, I ordered a BoV and the company said they will set it up for me if I tell them my PSI. Do you think I will be safe just telling them I have 10 PSI. I know my boost gauge isn't right. I have absolutly no leaks and it says at full boost i'm hitting 20PSI which I know is wrong because my turbo would have blown out by now also my car is on stock tune

 

[habitatguy187]

No, who did you order it from? Tell them you're running 25psi, if you tell them you're only running 10 then they'll give you a BOV that's rated for 12 and opens at 11. Feel me?

 

[mindset]

I'd adjust it myself just to be sure. It's just a little screw.
I'd invest in a boost guage too. Also a MBC just to be safe!

 

[dre5491]

I ordered the NGR Type-S. I ordered this because I love the way the Greddy version sounds and I have been told the Greddy has boost leaks and the knock off actually doens't. And the guy said they don't preset them for everyone I've just had some issues and their doing that out of good customer service. Thanks for the fast replies. I have a boost guage. Its an autometer that reads in PSI. I'm really not wanting to put much money in my car just get it to where its fun and sounds good. I got plans later down the road to upgrade to an EVO

 

[Bluefire16]

Stock 2gs boost.....NORMALLY...remember NORMALLY around 12-14psi. That is the average across the board. I would say around 12 if completely stock, if any uicp or anything then 13/14.

 

[force_feed]

This has nothing to do with your original question, but are you planning on venting that BOV or recirculating it?

The reason I ask is because if you vent your BOV your car will run rich between shifts, and probably wont idle for shit. The only way to successfully vent your BOV is to run a GM MAF and Translator.

 

[dre5491]

I was wanting to recirc it. I am going to buy the flange and recirc kit soon as I get the BOV at my house. I've been told theres a lot of pain in the butt work to make it vent. I figured just make it recirc since it has a recirc stock.

 

[ArcaineGST]

Tell them 15 and then take out the restrictor on your BCS. You wanted it more fun right? Lol.

I would also vote for recirc. Before I found out what's involved with venting (noob days) I had purchased a vented bov, and intake to match. I know that it runs rich at shift when I'm on it, but for some reason I've never had a problem with idle (smooth around 798rpm).

But you know, once you start doing this, you won't be able to stop. You'll get the itch just like we all have and before you know it you'll be looking for a Evo III 16g.

Have fun!

 

[dre5491]

But you know, once you start doing this, you won't be able to stop. You'll get the itch just like we all have and before you know it you'll be looking for a Evo III 16g.

Have fun!

But I will also have in the back of my mind that I will be getting an Evo when I graduate. So, a quick front wheel drive with the possibility of crank walking or a 4 door quick awd turbo thats fairly easy to make it decently fast... Hmmm...

 

[ArcaineGST]

I hope you do then. I had the idea of getting an s2k after graduation, but a year later I'm still without, . Which gen you wanting? 8,9, 10?

 

[thumper_1151]

my stock turbo 2g runs just over 15psi with boost restrictor removed.

 

[TSI-GUY]

i jus bough a 92 talon tsi awd with 167,000 miles on it and stock turbo and its boost up too 8 psi and the gages seems to work fine but i wana kno y when i am cruizing y does it drop to -0 but sa soon as i get on it and run about 3,000 rpm it will build boost and stay then but at like 2,000 rpm it sits at -0

 

[PieEyedPiper]

i jus bough a 92 talon tsi awd with 167,000 miles on it and stock turbo and its boost up too 8 psi and the gages seems to work fine but i wana kno y when i am cruizing y does it drop to -0 but sa soon as i get on it and run about 3,000 rpm it will build boost and stay then but at like 2,000 rpm it sits at -0

I'm sensing a loss in fundamental understanding of turbocharged engines. Most turbos spool up after the 2000rpm range. So, if you're not boosting, your boost gauge won't read any boost.

Hopefully that will steer you towards insight and get that lightbulb on.

 

[kimcheefists]

+1 When idling or below 2000 RPM, your engine should be in a vacuum. After 2000 RPM, the turbo spools up enough to push more air than the engine can consume therefore creating boost.

 

[91Bomb]

on my turbo itt sounds like it over spools it makes a weird noise ### could that be?

The noise you're hearing mght be the turbo bypass valve which goes psssssss.. when you're under boost and then let off the throttle. When letting off the throttle (which closes the throttle plate not allowing air into the intake manifold) turbo charged cars use a bypass valve since the air in the system (pre-intake manifold) is under such high pressure if you didn't have a valve to release that pressure craeted by the turbo when getting off the throttle it would damage the throttle body plate and/or turbo itself. Non-turbo cars do not require a bypass valve since air coming in is not pressurized.

Hope that was a clear enough exlanation of what a turbo bypass valve does

i jus bough a 92 talon tsi awd with 167,000 miles on it and stock turbo and its boost up too 8 psi and the gages seems to work fine but i wana kno y when i am cruizing y does it drop to -0 but sa soon as i get on it and run about 3,000 rpm it will build boost and stay then but at like 2,000 rpm it sits at -0

+2 for needing more fundamental knowlrdge on how a turbo works and read up on them.


Also, 8 lbs is too low and you should be seeing about 11 lbs on the gauge for stock 1g's. There's a boost control solenoid (bcs) located on your air cleaner which is a small solenoid with a vacuum hose going to it and it's job is to limit boost to 5-8 lbs to protect engine from knock/ping/pre-detonation etc when knock is detected by knock sensor. Now if that's why you only have 8 lbs boost you could be getting real knock for a number of reasons like, using low octane gas or have a faulty knock sensor or connector problem. faulty bcs or connection, phantom knock (research), possible ecu malfunction but probably not, You're limited boost could be due to wastegate vacuum line leaks or intake boost leaks too.

One time I replaced the BCS with a dealer part for $105 thinking that was what limited my boost and it wasn't so I'd recomend geting a logger since used ones are cheap and it will help you to easily narrow down your diagnostic search so you don't waste huge amounts of time + money trying to figure out what's bad or not. In the long run a logger will prove to be invaluable on an older turbo car. Good luck!

 

[crusindregs]

So all i have modified is the intake, BOV, and boost guage in my 99 gst and i am waiting on my MBC. The car is puttin out 14psi already and i was wondering what i need to get it to like 17 or 18 psi. I know that i can turn it up to 16 with no other mods but what do i need to turn it up to 18 other than a fuel pump???