What is this? (Early 2G-T intake "tank") box, licp

[CRiXman]

Hey! Can anyone recognize the black canister like object in the picutres below? I sent these pics to the guys at Extreme PSI and they didn't know what it is. Also the diagram in the Mitsubishi shop manual, doesn't show this object to be there. So if anyone knows what it is please let me know.

A breif description of problem: I thought the piping from the turbo runs straight to the intercooler. But instead it runs from the turbo to an unknown black canister (unknown to me and the guys at extreme psi), and then from there to the intercooler.

Thanks in advance!

 

[Daem0n]

It's the lower intercooler pipe silencer. It's a simple box that's hollow for air to go into instead of going directly into the intercooler. It was designed to minimize noise, and hinders the airflow. Remove it for better throttle response.

 

[CRiXman]

Thanks!!! How come the guys at extreme psi didn't know about this!? Makes me questions their credibility.

In any case thanks for the tip, will be removing it tomorrow!

Thanks!

 

[CRiXman]

Actually,

Will this be a cause of a loss of power. A GSX is supposed to do 0-60 in 6.5 seconds. Although mine does it in only 7.5 seconds and above... Pretty frustrating.. Could get better results with my CRX vtec...

 

[andymoraitis]

Actually,

Will this be a cause of a loss of power. A GSX is supposed to do 0-60 in 6.5 seconds. Although mine does it in only 7.5 seconds and above... Pretty frustrating.. Could get better results with my CRX vtec...

It doesn't directly cause a loss of power, but instead acts as a restriction to proper airflow. I replaced mine with a Buschur Upper Intercooler Pipe and while it works great and flows well, getting a cone filter on the end of the intake is mighty tight!

Regarding your 0-60 time, keep in mind that if you're on the stock turbo, it runs out of steam before redline so you may need to shift sooner (6800) to keep the car pulling properly. Try slipping your clutch at 4000 and shifting at 6800 and see what happens. If you do it right you should be considerably faster than a 7.5.

Hope that helps.

Andy

P.S. The crew at ExtremePSI have always been helpful to me. I wouldn't lose confidence in them.

 

[AWDrift]

Anyone know why my car just has a factory rubber hose going straight from the turbo to the intercooler instead of the silencer?

Mine was built in late '94 as a '95 model, maybe the silencer was added later?

 

[halik008]

Anyone know why my car just has a factory rubber hose going straight from the turbo to the intercooler instead of the silencer?

Mine was built in late '94 as a '95 model, maybe the silencer was added later?

some 2g's have it some don't kinda weird...but usually found on early 2g's...for example my 95 TSi has one (made in nov. '94)....I'm planing on getting rid of it but haven't found sutiable pipe to fill the gap yet.

halik

 

[fatafall]

My 96 hasnt got one. Ive never seen or heard of that before this post. I would take it off if I had one tho.

 

[CRiXman]

Thanks andy!

I definately agree the guys at extreme psi are very helpful! I was just surprised that they had no clue what that was and that on this forum I got a logical response in minutes... But as said not all 2Gs have em.. so maybe thats why they didn't know..

About the acceleration time, I was used to a vtec, which I realize now was so easy to get good acceleration times, sine all u gotta do was shift at redline. With the GSX u need to know exactly when to shift (before it is too late). But i still think It would help if I change the Spark plugs, clean out the intercooler, and unplug the clogged catalyser (advise from extreme psi).

However despite the fact that everything is stock for the moment, when I shift I can easily here the Pshhh from inside the car. Apparently from outside the car the Pshhh is much louder. I still havent figured out if this is normal???

 

[Daem0n]

Yep, it's normal. When you're outside of the car, the blow off valve sound is going straight to your ears, where when you're inside the car, the noise has to travel through the firewall;windshield, or whatever else.

If you want to quiet it down, look into the blow off valve dump tube free mod. If you're looking for extra noise, get an aftermarket bov or install a gm maf with translator for the ability to vent your bov and extended tuning capability.

Good luck.

 

[andymoraitis]

You're welcome! I agree with what the above poster said about the BOV sound. Since yours is a stock 2G unit, remember that it will leak at higher boost levels, but that hearing the air rush on any BOV is normal as it releases. Since you have the T25 on your GSX, I would add a 1G BOV unless you have plans to increase your boost on an upgraded turbo past 20-21 psi which is about the limit a 1G BOV will handle before needing modification.

There are a number of intake and upper intercooler pipe options available for your 2G and if you need some help selecting these options, let us know and I'm sure we'll be glad to help. I agree with you that VTEC is easy for shift points - take the car to redline and then hit the next gear. The thing that affects your turbo is that it runs out of steam before the engine and valvetrain do. I had a 2G N/T a while back and that was a car that liked the redline shift.

If you want to go past the sticking point of the T25, you'll need to upgrade the intake, exhaust and turbo and also make sure that you have more fuel (depending on your turbo choice) as well as a manual boost controller and the proper gauges to monitor everything. Let me know if that makes sense.

Andy

 

[1fast97gsx]

yea that black box is like a silencer and can and should be removed. Only few few select 2gs have them ... no clue why. Either way there is something VERY wrong with your car if you are running those 0-60 times and supposedly a crx is faster . I recommend you do a boost leak test since boost leaks are the number 1 cause for a HUGE power loss and they can also be easily fixed. I also suggest a compression test being done. Once that's done post the numbers back up and fix the boost leaks. If you are still running 0-60 times like that there is either something wrong with your driving technique or you have a bad turbo or something like that. These cars need to be launched at at least 4000 rpm and given a nice long slip. You'll know when you do it right. 1.8 - 1.9 60 foots are what you should be aiming for with that turbo and that'll help a LOT with your 0-60 times.

 

[Defiant]

I don't know how it could be considered a restriction, as it's just an expansion space. The intake air just blows by it, it's only a chamber open on the side to the passage, not a restriction it has to flow through.
Any improvement in performance will be roughly equivalent to fresh car wax.

 

[CRiXman]

Well thanks for all your feedback! I will keep you updated once I remove the 'silencer' and let you know if there is anydifference. I think what Daemon said about throttle response is logical. But I will check and confirm it.

 

[95gstHRCsuper20]

I don't know how it could be considered a restriction, as it's just an expansion space. The intake air just blows by it, it's only a chamber open on the side to the passage, not a restriction it has to flow through.
Any improvement in performance will be roughly equivalent to fresh car wax.

Even though it has the flow through design the turbulence is still created. The air does not have a predetermined direction once it hits this point. The air going straight through is then interrupted by the air that lost its way, HAHA, this conflict causes the air to slow down slightly which decreases the noise. I took mine off and it helped alot. I got a short coupler of exhaust pipe and put it in the place of the silencer. The stock piping would not quite reach it was about an inch and a half short. A hose or pipe expensive an exhaust coupler .50 cents.

 

[dave99gst]

i think a 95 is the only car ive seen then on. and on that one - we yanked it.

 

[Syndicate13]

Supposedly was a 95-96 only thing. One was on both my car and my friends 96 GST. It actually has a part number on it too. We took it to Mitsu and it only matched 95-96 cars, it didn't come on the later years.

 

[CRiXman]

Syndicate13,

Did you remove it??? And if you did... N E difference that you can remeber??

 

[Attack Eagle]

yep it was 95-96 only 97-99 dont have it.

2 problems i can see with it.

silencing noise implies some type of restriction or turbulence or resonating chanber....

This appears to be a resonating chamber which adds volume to the post turbo intake tract and adds another place to get a leak.


It was there just like the "dump tube" to help silence the turbo noises so prospective buyers would not think the car was noisy or whistly.
I LIKE hearing my car "breathe".

 

[Syndicate13]

Syndicate13,

Did you remove it??? And if you did... N E difference that you can remeber??

I don't remember if it made a difference or not, plus when I took it out I was installing a 16g anyway.

 

[HighPsi92GST]

i have one of them on my 95 tsi i just bought. when i first saw that box there, i was like WTF.
soon ill be getting an aftermarket pipe and that thing will be gone

 

[paranoidTSi]

Kinda late post on this topic, but I removed mine and I feel no performance difference but I can tell that the turbo is considerably louder.

Its not very hard to replace, pull it out, go down to autozone get a 2 1/4" Resonator pipe, hacksaw it and put it in its place..worked just fine for me.

 

[dbdh95et]

Kinda late post on this topic, but I removed mine and I feel no performance difference but I can tell that the turbo is considerably louder.

Its not very hard to replace, pull it out, go down to autozone get a 2 1/4" Resonator pipe, hacksaw it and put it in its place..worked just fine for me.

could you give more specific step by step instructions on how to do this?

 

[HighPsi92GST]

1. jack up car and support it somehow
2. Slide under the car on the passenger side right near the smic
3. loosen the two hose clamps holding the stupid peice of plastic in there
4. pull the peice out (mine was just stuck up in there, dont know if it was even bolted or not
5. cut a peice of 2.25 inch pipe (I used a peice i cut off a muffler, dont even know what type of muffler it was or where it came from, just know it was the right size)
6. stick the peice of pipe in place of the peice of plastic
7. tighten clamps
8. lower car
9. take it for a spin

 

[HighPsi92GST]

the peice i cut was actually a little too long, I had to shorten it after I took that picture. also, you will notice the plastic peice is curved and mine is straight, it worked fine that way.

let me know if you want to know anything else about it

finished picture -