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

 

[mitsuclipsegsx]

mine stock is 13psi

 

[Strm Trpr]

I have a A/M ultralite mechanical Boost gauge, and the BCS restrictor mod is done, and that's it.
My car spikes up to 14psi, then tapers down to 11psi and holds.
Stock boost for 2g's is 10 - 15psi, it'd all controled by the "Boost Control Solenoid... BCS...
With a MBC you can set it to say 16psi, and it should hold 13 - 14psi for ya.
Don't go any higher til you do an fuel pump rewire, and upgrade your pump.

 

[DSMeclipse4G63]

mine stock was 8.5-9psi, 1gs are 9-10psi 2gs 10-13psi. a few psi more or less isnt unusual, I leak tested mine and it held pressure so I didnt have any problems with the car yet it was still running 9psi.

 

[WaWaZat]

Just installed a boost controller on my 2nd Gen. Won't boost past 14psi. The general consensus is that the plastic BOV absolutely won't even spike beyond 14psi.

Tell me if this goal will work; 1G BOV crushed to hold 20psi. Set boost to spike @ 19psi in an attempt to hold 17psi on the stock T25 (I've installed a 255 HP fuel pump just in case).

I've heard that crushing the BOV causes it to release slower and/or compressor surge. Can anyone enlighten me more on this? What is the disadvantage of a slower release??

 

[2gGSX]

You won't need to crush the BOV immediately, since the stock 1g bov will work fine for a while. T25's dont really do much past 15 psi (they'll just starting to blow hot air), which is where you should try to set it to. Check flow maps if you don't believe me.

 

[WaWaZat]

Ok....but would it be any disadvantage to crush it now so as to be ready for future mods? Not quite sure what a slower release will do to performance or streetability.

I don't have any engine management at this point. What does one do to check flow maps @ this stage?

 

[blcknspo0ln]

dont bother with flow rates and things like that until you start tuning. just get an aftermarket/1g BOV and up the boost .. nuff said

 

[WaWaZat]

dont bother with flow rates and things like that until you start tuning. just get an aftermarket/1g BOV and up the boost .. nuff said

Cool!..but what I'm really tryin' to find out here is what I can boost to with the stock turbo & if squishing the BOV will help on the stock turbo for now & later w/an upgrade.

 

[AWDFury]

With the T-25 you should stay around 13 to 14 psi because if you run more than that you'll risk blowing up the turbo. If you want to up the psi to 17 just get an upgraded turbo, it's not worth it on the T-25...

 

[WaWaZat]

Man...I was hoping for more! I get 13psi without the controller.

 

[JoeWagon]

Trying to "spike" in order to hold a certain PSI isn't going to work. You can run 21psi, and it will still drop off hard at about 5500. Set it to peak at 15 or 16, call it a day.

 

[EclipseTrbo420A]

do nothing more than 16 If that , and shift at 5100 RPM of it will feel like you hit a wall ( not fuel cut ) but the turbo cant give anymore past then its simply maxed out then.

 

[bSQUAREd]

Hi, I'm just wondering...how much psi of boost is the 2g Eclipse running stock? And how much can you safely turn it up to without having anything done to the car.

 

[Slipstream]

10-15 stock and 15 is generally considered the outter limit for a stock car.

http://members.shaw.ca/costall/1000Q/answers-specifications.htm#Stockboost
http://dsmtuners.com/forums/search.php?searchid=359433
http://dsmtuners.com/forums/search.php?searchid=359435

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[TSIJUNKIE]

What's up people I finally got another DSM. I sold mine 4 years ago and always wanted another. This time I decided to go with the TSI model. I am doing little mods here and there but I wanted to know what the stock boost level was at, and what is the max it can go up too before you strain the engine and blow it? When I gun mine, the stock boost gauge goes up to 14psi, but I don't think that's right. Is the stock boost gauge off? Any guidence would be appreciated. PS. I used the search link but none of the links that were brought up touched on what I wanted to know.

Thanks

 

[jesepes]

Stock boost is set to about 11psi according to some articles I've read. I'm sure it varies some (.5psi or so) per car. I have not personally checked boost on a factory 1g to give you a real-life answer.

1g's can usually go to 15psi before the fuel pump is max.'d. I'd be careful with your car until you get a real boost gauge to see where you are at. The factory unit is the ECU's interpetation of boost based on other engine parameters, and is not an actual pressure measuring gauge.

Good luck, be careful and don't blow up your new ride!

 

[oddrob]

The stock boost gauge does not read actual boost, do not trust it. A stock TSi should be running in the ~10-12 psi range. With an aftermarket boost control, and a reliable gauge, 16 psi should be safe on 93 octane. As always with a new car, it may serve you well to go through it comletely and make sure its in proper running order before you increase the hp levels.

 

[TSIJUNKIE]

Cool thanks guys, that's exactly what I am doing, replacing timing belts, taking out balance shafts, replacing old hoses, all the necessary stuff first to make sure the motor will be reliable, then I was going to start playing around with some bolt on mods to give me some more power.

 

[MyEclipse5]

Cool thanks guys, that's exactly what I am doing, replacing timing belts, taking out balance shafts, replacing old hoses, all the necessary stuff first to make sure the motor will be reliable, then I was going to start playing around with some bolt on mods to give me some more power.

Mine will runs 8psi regularly. The reason of that is because there is a huge crack in my exhaust manifold. But that will be fixed soon.

 

[swarm]

Hi. I installed a MBC and could not get it to go OVER 14psi or UNDER 14psi... So I was like "what gives?" i unplugged the vaccum hose off the wastegate and watched my boost gauge -- 14psi... Now, I thought this was wierd, and was looking for a cure, and i finally found it... the BOV. I replaced the stock BOV with an aftermarket one and it will boost as high as I want it now, or as low as 14... but I want to go to like.. 8.... how can I do that? I want to do this for reasons of the car running really lean above 4,800 and nobody can find a cause of it.

 

[blackGSX2g]

With an aftermarket boost controller, you cannot go under what the stock wastegate is set at. The only way you can go under stock, is to purchase a new wastegate actuator set at whatever psi you want. THey are a little bit under a hundred I beliveve. IMO, I'd get the EVO III 16g from SBR for like $530ish and the stock wategatei is set at 9psi, but it pulls harder than my t-25 at 15psi.

 

[PaleDSM]

You cannot run under the spring pressure of the wastegate actuator. If you need to run minimum boost take the boost controller out of the system and run the boost reference line straight to the actuator.

 

[DeviousOne]

This guy is telling me that he 1991 talon is boost 4 PSI stock? I don't own a DSM but I know for a fact the first gens boost more the 4 psi stock I was saying anywhere from 8.5 to 11 stock but im not sure do any of you guys have a link to a web page w/ factory specs and boost levels. Let know the stock boost is and a link so i can this kid up. If he really running 4 psi then his GST has a problem

 

[Mirage2LTurbo]

1g's run 10-11 I believe and 2g's are 13-14psi.

 

[enid84]

I thought wastegate supposed to open at 11.4psi on 1g and 10.4psi on 2g. I know wastegate is not accurate to that level, but thats what i read somewhere.