How much boost does a stock T25 put out?

[GsXdSmKingGsX]

I have no aftermarket boost gauge so I'm just wondering if somebody would happen to know a number of how much boost my stock T25 pushes on my 1998 GSX.

Thanks

 

[Dsmj89]

9-10 psi.

 

[toofast82]

should be about 10psi stock, if you take the the restrictor out of the bcs you may pick up 1-2psi

 

[GsXdSmKingGsX]

"should be about 10psi stock, if you take the the restrictor out of the bcs you may pick up 1-2psi"

How is this done?

 

[toofast82]

theres a small restrictor that goes to one of the lines (i forget)on the solenoid, you take it out. search for the free mods, its one of them

 

[Unwythe]

Look on the top of your wastegate actuator(shiny gold thing right where your intake pipe goes on the turbo) and there should be a line. Follow that line from the actuator, and it should lead to something black, with two ports. The port that the line comes out of, has a black restrictor in it that you can't see. Take a screw that the same size as the hole, and screw it in 1/4 of the way(use a small wood screw). Pull it out very slowly, and when done there should be a tiny black rubber fitting on the end of the screw. You might take a few tries to do this, but BE CAREFUL. If you break that solenoid, it's a $50 part brand new.


But, I'm probably wrong, but I thought on 2G's the boost was around 13-14ish stock? I know on 1G's it's 9-10 stock, but I thought 2G's ran just a tad higher boost level than us 1G's stock.


But, before you go playing with the boost you really, REALLY need an aftermarket boost gauge. Go pick up a cheap one from Autozone/Checkers, that should have been your first mod.

 

[crimsondragon]

Are people really that lazy nowadays?
http://www.dsmtuners.com/forums/newbie-forum/1893-stock-boost-merged-5-7-a.html
Alex's 2g Waste Gate Solenoid Restriction Removal FAQ

 

[T70 Whiteagle]

10psi stock!

 

[Drift_SM]

9-10 psi.

Really wrong.

should be about 10psi stock

..... Wrong.

10psi stock!

Nope, Wrong.

But, I'm probably wrong, but I thought on 2G's the boost was around 13-14ish stock? I thought 2G's ran just a tad higher boost level than us 1G's stock.

YOUR RIGHT! There's still hope that some people still know there basics!!!!

A stock HEALTY running 2g is factory set at 14 PSI.
A stock HEALTY running 1g is factory set at 12 PSI.

*** From many different reasons including air Temp, alltitude, age, leaks, ect... they may loose a psi or two.

Its been proven time and time again. Take your DSM, clean your intercooler, do a boost leak test, and get a tune up (plugs, wires, air filter). It WILL read 14 psi (2g) and 12 psi (1g) on your boost gauge.

The archives don't lie guys and gals. It only takes a little time to search.


From VFAQ.com & 1000 Already Answered Questions - Index page WOW, see what a little searching can do!

What is the stock boost pressure on a [DSM]?
Many questions of this type can be answered by the following references:

A search of the Club DSM archives at Talon Digest Archive Search (alternate link here);
Referring to the factory shop manual;
Looking at the factory brochures;
Reading the owners information manual.
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.

 

[D's GS-T]

13-14 stock

 

[Unwythe]

Wrong.



Wrong.



Wrong.



YOUR RIGHT! There's still hope that some people still know there basics!!!!

Sweet!! What do I win??

 

[dyno_detour]

Sweet!! What do I win??

Defiant is making you some cookies. Priority mail 2-3 days.

 

[Unwythe]

Defiant is making you some cookies. Priority mail 2-3 days.

Hahaha, sweet! I've been wanting some cookies lately. Are they Chocolate Chip?

 

[94Jettameowpsst]

i wouldnt suggest the restrictor removal unless you wanna knock all over the place and shorten the already short life of your t25 by half+

 

[Drift_SM]

Defiant is making you some cookies. Priority mail 2-3 days.

Then LEET shot the U.S.P.S plane down with his assault riffle. So no cookies.

But, Its the thought that counts.

 

[toofast82]

I ran my stock 2g without restrictor for 2years with no problem. I dont think an extra psi is going to cut the t25 lifespan in half.

 

[94Jettameowpsst]

I ran my stock 2g without restrictor for 2years with no problem. I dont think an extra psi is going to cut the t25 lifespan in half.

14psi stock
16-17psi w/ no restrictor
15psi and up the turbo blows hot air bc its a piece of ish, hot air makes for a bit of knock signifigantly more than stock boost, = high egts, viscious cycle.

The turbo wont last at higher boost hence why the 14b is such a popular swap on 2gs

 

[toofast82]

the t25 is a lawnmower turbo and i think thats why alot of people upgrade. you could also have a million people that will say 17psi will shorten a 14bs lifespan. i personally had a 14b with 177k miles that i ran over 22psi for over 2years and the motor blew. the 14b had no play at all but alot of cracks in the turbine housing. it even hit 30psi+ a few times when the actuator went bad. I didnt have a boost gauge on my 2g but i never had a turbo problem for the 120k miles that were on it. Proper turbo cooldown goes a long way imho! There are a number of factors that can cause turbo destruction.

 

[Drift_SM]

I personally had a 14b with 177k miles that i ran over 22psi for over 2years and the motor blew. the 14b had no play at all but alot of cracks in the turbine housing. it even hit 30psi+ a few times when the actuator went bad. I didnt have a boost gauge on my 2g but i never had a turbo problem for the 120k miles that were on it. Proper turbo cooldown goes a long way imho! There are a number of factors that can cause turbo destruction.

Proper turbo cool down on a 14b? No.
Any turbo that has coolant running through it doesn't need a cool down period. Thats the whole purpose of having coolant passages. All mitsubishi turbos are designed for longevity...120k?? They can last 300,000 miles with proper automotive preventive maintenance. The PSI level doesn't matter...as long as you not out flowing the turbo's capabilities.

You know what causes turbo destruction? The owner.
You know what causes turbo longevity? The owner.

 

[Unwythe]

This thread is about what the level of boost is, for a stock 2G w/T-25. How did you guys go from there, to arguing about turbo longevity? Come on guys, DSM'ers as a whole are better than this to each other.


Now kiss and make up.

 

[toofast82]

Unwythe, your right? i didnt start it
Drift sm? why on the flip down mirror does it say to allow vehicle to idle for 60secs after operating at high revolutions. The water cooled housing is not going to actually lubricate the bearings after shutdown, which will cause the most damage. it helps to cool down the centersection as well as center shaft.

 

[Drift_SM]

Why on the flip down mirror does it say to allow vehicle to idle for 60secs after operating at high revolutions.

Thousands of vehicals say that, owners manuals, warning stickers...ect.

Thats a norm for ANY engine that was just running excessively. Its not specific for a turbo charged vehicle.

 

[xioca]

Are people really that lazy nowadays?
http://www.dsmtuners.com/forums/newbie-forum/1893-stock-boost-merged-5-7-a.html
Alex's 2g Waste Gate Solenoid Restriction Removal FAQ

Obviously, and posted in the wrong section too.

 

[GsXdSmKingGsX]

This thread is about what the level of boost is, for a stock 2G w/T-25. How did you guys go from there, to arguing about turbo longevity? Come on guys, DSM'ers as a whole are better than this to each other.


Now kiss and make up.

Exactly (minus the kiss and make up part) all i wanted to know was the boost level. And thanks for answering it

 

[toofast82]

I have never seen a nonturbo or supercharged car with that kind of sticker. I would love to be shown proof