Originally posted by LsTegDude1
here is a question.... my friend has a 96 teg LS and he is thinking about going boost on it and he has been thinking about what turbo to get and his goal is to have some boost nothing to huge but still something noticable you know..... so we came to the T25 the stock turbo that comes on the GST he wanted to know and i am curious too on how much do T25 go for used and new and can he buy a drag mani and bolt right up to the T25 or does he have to have someone make a custom mani or is there another mani out there for sale that bolts right on to the T25 that we dont know about..... and is the T25 a good choice? will he notice the differerce by a lot or is the T25 a waste of time? so basicaly he wants some boost not a lot but he wants to do it right at the same time and we he have to get internals for the LS he has 110,XXX miles on it as of right now and one more thing are there any mods he will need to have this kind of set up so it can run right he has a skunk 2 intake mani on it and a stage 1 clutch masters clutch on it right now and nitto 450s on it that are pretty damn new... will he have to swap out the tranny being it is from the year 96??? so all in all what will he need and is this the right turbo for what he wants thanks for any help
It sounds as if your friend wants to go with a turbo kit that boosts like make power as if it were a supercharger...
The T25 on the 95up Mitsubishi Eclipse is known as the T-too small...It will run out of steam very early on in your RPM Band...
That being said, I will think it will be perfect for your friend's stock LS...
The main reason I say this is because your friend wants to boost his power up a little more than any N/A mods will accomplish and adding a small turbocharger will increase your torque from the minute you step on the gas throughout the whole powerband...With the size of the T25, you will make most of your power between 2500-5000RPM and then your torque curve will fall off as you approach top end...It does this in the stock Eclipse, which is running 8.5:1 compression...Your LS is at 9.4:1 Compression...But the Eclipse is a 2.0liter and your LS is a 1.8liter...Now, the only way to make power, reliably,
is to add fuel to supplement the additional Oxygen...A Vortech FMU or similar Rising Rate Fuel Pressure Regulator is invaluable in this case...You also need to "hide" the boost from the MAP sensor and you will need to have some control over ignition timing to avoid any unwanted detonation...
You need to use some form of intercooling to control the compressed air's temperature...This will also make power...You will need to address the exhaust...Running a large 3" downpipe will be sufficient but obnoxious if you don't run it back into a muffler...With turbos, the bigger the exhaust the better...
Gauges you will need should consist of Mechanical Fuel Pressure for under the hood, Electrical Oil Pressure, Boost, EGT for monitoring your Exhaust Temperature or a quality A/F Ratio Gauge...You can add other gauges to monitor more of whats going on under the hood if you have the funds...
An MSD BTM is invaluable for the control over your ignition while increasing the strength of the ignition at the same time...
There is always room for improvement when you boost on a budget and money should be spent on a quality tuning session with the use of a Lambda to monitor the A/F ratio as you tune...
The HKS Turbo Manifold for the B-series is flanged for the T25 and someone on this post has the T25 with a Manifold for the B-series for sale...
Good Luck,
Zee