Best Turbo? [Merged 9-9] turbocharger upgrade

[hukster00]

hi, i wona upgrade my turbo on the gsx, and there is so many choices dont know which one to buy, so i asking you pepz wich turbo is best for under 1k for street/strip setup thanks,

 

[spoolup]

thats what is so great about DSMlink is that it will make the big injector perform like stockers, setting the deadtime, global, and adjust timing and fuel to keep it all in check. But is all contained in the factory ECU and it will still function like a factory ECU. Check it out. www.dsmlink.com
Only thing, you will need to find a 95 Eprom ECU, and then get it dialed in for emmisions. Which will require you to hook up to a emmisions tester and run it while adjusting BEFORE going to get your tech inspect. So you can preload the ".ecu" file so you do not need to be there for them to test it. I guess the quistion is do you have a friend that will let you adjust such a program without drawing any heat from "smog police".

 

[oldman]

Just to clear one thing up, CFM meassures the maximum flow of the turbo and does not directly contribute to why T28 flows more air than T25 at the same PSI.

pv=nrt ---> n=pv/rt

Since p (pressure) and v (volume) are both constant, the only factor that can change the amount of air flow is t (temperature), larger turbos are more efficient therefore produces less heat which equals denser air, reason why it flows more air at the same boost level.

 

[Splitpi]

When they do the tech controls in EU, do they tear the car apart or just look for things that should not belong? You could easily puts some 550s in and a walbro 190 (not that loud and does not require a AFPR) then use DSM link to control it. That with a BT28 would appear COMPLETELY stock to even a trained eyed person the only one who will know is if they have the exact same car next to them when looking at ceritan things.

Your gas milage will only really increase if you get on it a lot. Thats what makes turbo so nice, you can actually not build any boost ever and keep decent gas milage. But I feel bad, doing the math it appears fuel it $6.50 a or so. Sorry bro.

I think spoolup has the best answer for your conundrum. It would appear very stock yet give you the new power which you crave....

Or else you could always move to America with your car and come to the land of less legsilation .... But Switzerland is nice and the people were very nice when I visitied and the skiing was awsome.

 

[Addicted2DSM]

I think the 14B would be best for you. Later on upgrade your fuel pump and injectors, upgrade your UICP and bov and get a boost controller and boost gauge. Dont forget about the free mods if you havent done them already.

 

[Crazed Modder]

Stock turbo. Your fuel sytem is built to marry the stock turbo. If you dont want yo upgrade the fuel system, DONT upgrade the turbo. Thats like putting a 3 inch exhaust with a stock muffler and a silencer....


It just dont make sense.

 

[CRiXman]

OK lemme go back to the roots..

The thing is this.. before doing any real mods, I need a catback (turbo back to follow). And to respect the stocker look I was planning on purchasing a A'PEXi WS2 catback from extrempsi. Shipping price is $320, which is enormous!! Then Hung, told me for this same shipping price I could on 40lbs of goods. Knowing that a turbo to ship here alone cost about $130, I wanted to take advantage of this offer to get the following for the same shipping price:

APEXi WS2 Exhaust
APEXi Power Intake
Boost gauge (my autometer ultralite series is not accurate, I feel)
Hallman Evolution MBC
FPBigT28

I jsut wanted to take advantage of this situation...

I must admit, that I have tried to learn about tuning, via here which is my only real resourse. People here (switzerland) don't tune, and the few people who do charge insane bucks.

Anyone of you who could teach me to tune and the basics are welcome to come to Switzerland anytime! (I am serious) I unfortunately am not a good self learner.. I need a mentor...

 

[CRiXman]

Where could I find a brand new 14b? Mitsu dealer? How much?

Also, is there any used getting a fp, 550s, Apexi AFC, with the T25?

I am trying to see options, to take advantage of shipping price..

 

[Addicted2DSM]

I dont know about finding a brand new 14B but you can always buy one and have it rebuilt. You can run an upgraded pump and injectors, it'll allow you a little more room to add more boost. I'm not too sure how many psi the T25 holds up til it leaks. Also look into upgrading your UICP and BOV a good cheap bov upgrade would be a 1g bov. It doesnt leak like the crappy plastic 2g bov.

 

[2DaTrakNow]

You can run a T-28 at stock boost levels no problem. You will gain about 25HP extra at the same boost level due to the extra CFM's the turbo is flowing. If you run any higher then stock boost levels your asking for it. At least drop in a Walbro 190LPH fuel pump or rewire the stocker for now.

I know this is alittle off topic, but i figured i would be better off asking here than making a new thread. My question is about the CFM's that a turbo flows and the amount of boost it makes. I know it is very obvious that in general, if you have a bigger turbo, you can flow more air. I get confused when people say that 8 psi on a small turbo is a lot less than 8 psi on a larger turbo. Well, if youre boost gauge is getting its readings from your intake manifold, wouldnt 8 psi be the same on both turbos? I know that right out of the turbo, the bigger one will flow more air at the same level of psi as the small one. However, the intake manifold size does not increase, therfore if you have 8 psi in the manifold with a large turbo, it should be the same as a smaller turbo right?

 

[oldman]

I know this is alittle off topic, but i figured i would be better off asking here than making a new thread. My question is about the CFM's that a turbo flows and the amount of boost it makes. I know it is very obvious that in general, if you have a bigger turbo, you can flow more air. I get confused when people say that 8 psi on a small turbo is a lot less than 8 psi on a larger turbo. Well, if youre boost gauge is getting its readings from your intake manifold, wouldnt 8 psi be the same on both turbos? I know that right out of the turbo, the bigger one will flow more air at the same level of psi as the small one. However, the intake manifold size does not increase, therfore if you have 8 psi in the manifold with a large turbo, it should be the same as a smaller turbo right?

Already answered in post #20.

 

[2DaTrakNow]

Already answered in post #20.

Yes i know, I have already read that, but I am still confused.

I understand that a bigger turbo will flow more air than a smaller one if you have them at the same settings. The part where i get confused is that 12 psi can be more air than 12 psi in some cases. I could understand that if you check the psi right out the end of the turbo, that the bigger one would be flowing more air at the same psi. That all makes sense to me, but it stops making sense when you are taking a reading from the intake manifold, and 10 psi can be less or more air than 10 psi depending on turbo size. Do you understand what i am confused about? When all of the air is near the end of its path, and its in the intake manifold, 12 psi will always be the same amount of air as another 12 psi due to the fact the the intake manifold size does not change. Is that correct or not? And sorry for being somewhat confusing and ignorant, i just want to clear it up.

 

[oldman]

When all of the air is near the end of its path, and its in the intake manifold, 12 psi will always be the same amount of air as another 12 psi due to the fact the the intake manifold size does not change. Is that correct or not? And sorry for being somewhat confusing and ignorant, i just want to clear it up.

Not if the temperature is different. Given the same volume and pressure, the lower the temperature, the more dense the air, the more air. A larger or more efficient turbo produces less heat at the same psi level therefore is able to squeez more air into the same volume under the same pressure than a less efficient counterpart.

 

[2DaTrakNow]

Not if the temperature is different. Given the same volume and pressure, the lower the temperature, the more dense the air, the more air. A larger or more efficient turbo produces less heat at the same psi level therefore is able to squeez more air into the same volume under the same pressure than a less efficient counterpart.

Alright, thanks for helping me understand. Im only going to ask one more thing of you though, lets say that i have a very good intercooler and when all of my air reaches the intake manifold which is where my boost gauge is coming from, and the temp. is the same(for both turbos) and it says 12 psi. Wouldn't my car be getting fed the same amount of air into the engine, assuming temp. is the same, along with all other variables excluding the sizes of the turbos? So in that case, running 12 psi on both turbos wouldnt really give me a "more air" advantage, right?

 

[oldman]

Alright, thanks for helping me understand. Im only going to ask one more thing of you though, lets say that i have a very good intercooler and when all of my air reaches the intake manifold which is where my boost gauge is coming from, and the temp. is the same(for both turbos) and it says 12 psi. Wouldn't my car be getting fed the same amount of air into the engine, assuming temp. is the same, along with all other variables excluding the sizes of the turbos? So in that case, running 12 psi on both turbos wouldnt really give me a "more air" advantage, right?

Theoretically yes but phisically impossible because the same intercooler will always produce colder air with the turbo that puts out lower intake charge air. This is why it takes longer to cool your house the hotter it is outside.

 

[sleepy98gsx]

my 98 GSX is auto and i'm running the EVOIII 16G..stock internals, including head (i'm only running 10psi till i can tune it) but i can build that full 10 by the time i leave the line everytime with absolutly no problem. (stock converter).

Chris

 

[vaboys2ndgen]

my 98 GSX is auto and i'm running the EVOIII 16G..stock internals, including head (i'm only running 10psi till i can tune it) but i can build that full 10 by the time i leave the line everytime.

Chris

once u turn the boost up you'll be able to launch close to full then too!

 

[sleepy98gsx]

i can't wait and i'm looking at the IPT converter over the summer and upgrading to a 50 trim (hopefully..if all plans go well)..then i'll be having some real fun, haha.

Chris

 

[vaboys2ndgen]

i can't wait and i'm looking at the IPT converter over the summer and upgrading to a 50 trim (hopefully..if all plans go well)..then i'll be having some real fun, haha.

Chris

check into their shift kit, transmission coolers also! good stuff!

 

[TSIMonsteR]

With my 16g I can get full boost. You just have to be patient when brake boosting. Sit there and let it build and it will get you some nice 60ft times. By the way, the 14b is a great turbo.

 

[93 GSX TURBO]

I can power brake 18psi off the line with my EVO316G but my second gear is really slow

 

[Sbeing1]

With my 16g I can get full boost. You just have to be patient when brake boosting. Sit there and let it build and it will get you some nice 60ft times. By the way, the 14b is a great turbo.

Dont sit there for too long or too many times right after eachother, heat kills your tranny and when brake boosting your making tons of heat, stock tq converter cant take it.

 

[sleepy98gsx]

i've heard some really good things about the Translab shift kit. A few months ago i almost bought a tranny from somebody a few hours away from me that ran consistent 10's on an IPT tranny and they used the Translab shift kit and said it was a huge improvement, i found it for like $75 bucks so it's nothing too pricy either..any experience with this kit?

Chris

 

[TSIMonsteR]

Dont sit there for too long or too many times right after eachother, heat kills your tranny and when brake boosting your making tons of heat, stock tq converter cant take it.

Yeah, you gotta let it cool off afterwards. Also, I have an upgraded Tranny Cooler from IPT and that helps keep it quite a bit cooler then stock. If your AT Temp gauge comes on, you know your killing that tranny.

 

[92awddsm]

Yeah, you gotta let it cool off afterwards. Also, I have an upgraded Tranny Cooler from IPT, and I use GM Syncothromesh and both help keep it quite a bit cooler then stock. If your AT Temp gauge comes on, you know your killing that tranny.

You are using gm syncromesh in your auto?WTF That is designed for manual trannies. That isnt the smartest thing to do. You are just asking for trouble. Drain it now and replace with auto tranny fluid.

 

[Sbeing1]

i've heard some really good things about the Translab shift kit. A few months ago i almost bought a tranny from somebody a few hours away from me that ran consistent 10's on an IPT tranny and they used the Translab shift kit and said it was a huge improvement, i found it for like $75 bucks so it's nothing too pricy either..any experience with this kit?

Chris

Yea i have it and its great, get a IPT end clutch kit as well