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2G Looking to upgrade turbo

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Bandit___01

Proven Member
33
6
Apr 6, 2022
Murphysboro, Illinois
So I just recently bought a 99 GS-T, replaced the intercooler piping due to a leak from the plastic hose that attaches to the top of the intercooler (rubber piece rotted) with some hard pipes, and replaced the BOV with a greddy type fv2, and I've been also wanting to replace the stock turbo, obviously with the 16g, and I found one from extreme psi that is the EVO 3 16g that I'm eyeing to buy, but I know I likely have other things to replace as well for the turbo, an obvious one being the intercooler, but other things like the downpipe and exhaust manifold most likely, so I figured I'd post in here and ask for any advice anyone can give for this, as well as recommendations on what parts I should replace along with upgrading the turbo to the 16g.

My intention isn't to add crazy horsepower, at least not yet, I just wanna replace the turbo cause while yeah it's fun to drive, the stock turbo just feels a bit lacking to me, and I wouldn't mind a little more oomph from the turbo, but I don't wanna attempt to tweak the boost on the stock turbo, so I figured just upgrading it would probably be best anyway and replacing it with the 16g is an eventual inevitability, so I may as well get it over with.
 
All you NEED to install a 16g on a 2g is a j pipe. The stock manifold, downpipe, O2 housing and intercooler piping can all be reused. Yes you can upgrade those things to get more power out of the 16g but without upgrading the fuel system and having some way to tune it then it will all be pointless because you will just be hitting fuel cut.
 
All you NEED to install a 16g on a 2g is a j pipe. The stock manifold, downpipe, O2 housing and intercooler piping can all be reused. Yes you can upgrade those things to get more power out of the 16g but without upgrading the fuel system and having some way to tune it then it will all be pointless because you will just be hitting fuel cut.
Ok, so just the j pipe to replace then? That actually doesn't sound bad, the intercooler though, would it be worth it to go ahead and use a front mount instead of the stock side? I figured that it'd be best to do that along with the turbo at least, but if it's not really necessary then I won't do that, at least not now. In terms of tuning I do have an ecu with ECMLink, and there is a dyno garage near me, though I have yet to put the ecu in the car, just haven't got to putting that in yet because I just finished the intercooler piping and bov, and haven't yet moved on the ecu. And I do plan on upgrading the fuel system as well in the near future
 
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Please fill out a profile. If you're jumping to turbo as your first mod I think you will be disappointed.
 
Please fill out a profile. If you're jumping to turbo as your first mod I think you will be disappointed.
Where would you suggest that I start then for modding? I'm open to any and all recommendations on what to do before a turbo upgrade if that's what I need to do before getting the turbo

So far what I've done is just the intercooler piping, BOV, and air intake, though those were because they were bad and needed replaced asap

I have no problems holding off on the 16g for a while and replacing whatever needs replaced before I get to the turbo, right now I'm pretty much just trying to get a part list put together before I make any more purchases on mods and looking for any advice/recommendations that someone can give on the best places to start
 
Start here.


Please read this carefully. I've watched countless people try and give up because they didn't have a plan and didn't really understand what they wanted. Planned modification will generally yield much more enjoyment in the final product. The enjoyment that brought you to the car in the first place.

The resources page (where I got the first link) has decades of research boiled down to some articles and you can catch up on decades worth of research. Big shops spent lots of money to try an reach a 10 sec timeslip. Now somebody can do so easily by following the research and advice of those that have already been there.

 
Start here.


Please read this carefully. I've watched countless people try and give up because they didn't have a plan and didn't really understand what they wanted. Planned modification will generally yield much more enjoyment in the final product. The enjoyment that brought you to the car in the first place.

The resources page (where I got the first link) has decades of research boiled down to some articles and you can catch up on decades worth of research. Big shops spent lots of money to try an reach a 10 sec timeslip. Now somebody can do so easily by following the research and advice of those that have already been there.

Giving up on anything isn't what I do, and thank you for those links and the advice, I very greatly appreciate that, I just bookmarked them to get back to them quicker, and made a profile for my car like you suggested as well, admittedly I really never get on forum sites much up until I got this car, and this is the first time I've had an account for one, so it took a bit of navigating around to figure out what you meant at first, but I got it done LOL, and I do have a plan for my car, I do wanna build it for racing, I'm just trying to figure out the best place to start first for building my car and what parts/brands/etc. people prefer or recommend to get or to start on first, with those thread links I get my build plan more structured. Again, thank you so much!
 
Please read the project management post carefully. "I wanna build it for racing" is very vague. In my opinion you must have a direction you are going to decide what to do. Are you building a drag racer? autox car? Road race car? What you plan to do will greatly influence how the car is built. Sad to say but there isn't a build that allows the car to do all things to the greatest ability. You have to choose. Those that are AWD have a little advantage as AWD happens to lend itself well to a variety of things. It's one of the main reasons DSMs are so popular and were so well received when they were introduced.
 
If you're not looking to add crazy horsepower but want a little more jazz and reliability from the turbo itself, look to a 14B or Small 16G instead of the Evo III. The 14B will install on the stock manifold and o2 housing without requiring porting. All 16G's will require porting to either the manifold or o2 housing, or both. Ideally the 14B maxes out around 18psi and the Small 16G around 22psi, so it all comes down to the amount of horsepower you wish to make and how responsive you want it to be....the larger you go, the slower the response will be.
 
Be aware that while there isn't much you can't do with the 2g platform, your goals and your wallet need to have a serious conversation. For example, the fwd manual transmission can't withstand more than about 400hp before stuff starts to break (I know people will argue this both pro and con). Modding the manual fwd isn't done any more (not enough call for it and beefy parts aren't available except in the rare and expensive find). Automatics can handle good power though...to a point. You can also convert the fwd to awd, but that too will require planning and modding.

As has been said, read through the upgrade path thread and decide where you want to go. Then do a butt ton of reading and research on here to decide how far you want to go and how you want to get there. An informed and planned path will be far more successful and satisfying than just throwing upgrades in and trying to make everything work.

Nice thing is you have a host of enthusiasts and experts on this site who can help you along. This site and its people are awesome.
 
If you're not looking to add crazy horsepower but want a little more jazz and reliability from the turbo itself, look to a 14B or Small 16G instead of the Evo III. The 14B will install on the stock manifold and o2 housing without requiring porting. All 16G's will require porting to either the manifold or o2 housing, or both. Ideally the 14B maxes out around 18psi and the Small 16G around 22psi, so it all comes down to the amount of horsepower you wish to make and how responsive you want it to be....the larger you go, the slower the response will be.
When it comes time to upgrade the turbo, I will definitely give the 14b a glance then until I'm ready for a 16g, right now I really don't wanna do anything crazy just yet, just wanna give my eclipse a little more pep in it's step for the time being until I'm ready to venture into more serious mods and whatnot
 
Be aware that while there isn't much you can't do with the 2g platform, your goals and your wallet need to have a serious conversation. For example, the fwd manual transmission can't withstand more than about 400hp before stuff starts to break (I know people will argue this both pro and con). Modding the manual fwd isn't done any more (not enough call for it and beefy parts aren't available except in the rare and expensive find). Automatics can handle good power though...to a point. You can also convert the fwd to awd, but that too will require planning and modding.

As has been said, read through the upgrade path thread and decide where you want to go. Then do a butt ton of reading and research on here to decide how far you want to go and how you want to get there. An informed and planned path will be far more successful and satisfying than just throwing upgrades in and trying to make everything work.

Nice thing is you have a host of enthusiasts and experts on this site who can help you along. This site and its people are awesome.
I'm terms of goals, I'm gonna adhere to the build guide posted above, in terms of budget, I'm pretty set with what I'm willing to spend (only thing I haven't been able to find so far to write down for a parts list is a friggin downpipe because mines rusted to the point of falling apart)

Right now my car's not manual, I wanted to get a manual when I was in the market for an eclipse but settled on an automatic because that's all I could find, I do have plans for converting it over to manual in the near future as well, or possibly doing something that I guess could be considered unique for these cars and building some sort of paddle shift system or something, which I'm more than sure would present its own challenges, but I'm up for it LOL, the reason I don't want auto is because I just don't like driving auto, I'm too used to driving manual and it just doesn't feel right to me to drive auto, I feel awkward driving it xD
 
Please read the project management post carefully. "I wanna build it for racing" is very vague. In my opinion you must have a direction you are going to decide what to do. Are you building a drag racer? autox car? Road race car? What you plan to do will greatly influence how the car is built. Sad to say but there isn't a build that allows the car to do all things to the greatest ability. You have to choose. Those that are AWD have a little advantage as AWD happens to lend itself well to a variety of things. It's one of the main reasons DSMs are so popular and were so well received when they were introduced.
Im thinking either autox or road racing for this one, likely autox, which I'm sure I'm a long way off from even getting to, but I'm patient LOL, I do want to venture into drag strip at some point though but obviously I'd be building a different eclipse altogether for that if I choose an eclipse to build for that so that's something to think about for way later on. And in terms of awd, I do want to convert my gst over to awd eventually, and I know that sort of thing is pretty costly, so I'm not going to be doing that for a while unless I can find a really good deal on parts for a conversion
 
Since it hasn't been asked yet, when was the last time the timing belt and associated components were changed? If that hasn't been done I would mark it as NUMBER 1 to address.
 
Since it hasn't been asked yet, when was the last time the timing belt and associated components were changed? If that hasn't been done I would mark it as NUMBER 1 to address.
That was one of the first things I actually did when I bought my car back in March, I flushed out the radiator and brakes, and changed all fluids, belts, hoses and gaskets for the car
 
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