95 gsx how to make 500hp

[95GSXbigturbo]

i just bought a 95 eclipse gsx my goal for it is 500 awhp .... it has a built motor with brian crower rods eagle pistons bored .20 over stage 2 act clutch fadenza lightweight flywheel B&M short through shifter big16g turbo and full 3 inch exhaust with no cat everything else on the car is stock. im buying a bfmic right away and new cold air intake and a wastegate made by modern auto performance to get rid of the boost creep and so i can control my boost better im running 13 psi right now because of boost creep from the free flowing 3 inch exaust... what parts do i need to make 500hp by brand and what works best on a 2g dsm

 

[PotatoFlakeSTi]

Welcome aboard.

Here are some rules: Welcome to DSMtuners - DSMtuners

Mainly research! If the search function on the website isn't helping try the following search string in Google;

Site: DSMTuners.com "question here"

 

[WES_393]

An external waste gate won't do much for boost creep. You need to port the actual internal waste gate channel and flapper hole. You won't make 500hp on a big 16g anyways, so don't waste any time on that turbo. Things you'll need:

Turbo:
You'll need something that can flow over 50 lbs/min. The options are pretty numerous, but Holset's are the weapon of choice now days.

Fuel:
You will need much more fuel than the stock pump and injectors can deliver. Something in the ballpark of a rewired Walbro 255 and 1000cc injectors. You'll need a new fuel pressure regulator as well.

Tuning:
You won't get anywhere without a way to control the fuel, airflow, and timing. DSMLink is easily the best 2g tuning solution for under $500. Since you have a 95, you might have an EPROM ECU which makes it cheaper and easier to install Link. You also need a wideband and boost gauge.

Engine Strength:
The engine has to be able to handle that much power reliably. Things such as head studs to keep the head gasket from blowing and a balance shaft delete to keep things safe. You also need to be 100% up to date with maintenance. Timing belt, tune up, oil change, etc.

Lastly, research. Nobody can tell you exactly what to do. It's not as easy as "bolt on these parts, crank up the boost, and make 500hp". Guys spend months researching the parts needed for such a goal. So get maintenance/engine strength taken care of, then tuning, then fuel, and then the turbo setup. Research every part and make sure they are compatible and capable of reaching your goals.

 

[DOHCTA]

precisely what he said! ^^ +1

 

[95GSXbigturbo]

do all 95s come with eprom? ### i know there like 250 300$ money really isnt an issue this is the first car im building i have the know how but not the experiance i have a friend that is very experiance that is going to help me i just dont know exactly what parts to buy im planning on buying a precision 6262 ball bearing turbo with a MAP manifold and tial wastgate is precision a good buy? but i have big list to research

 

[DOHCTA]

that's a good drag turbo, do you plan to street drive the car? or maybe circuit race?

you'll get to those #'s using an aray of smaller BB turbo's that will give you better spool at a lower rpm.

 

[AwD4g63TsI]

If you don't have an eprom, they're all over in the classifieds. I just sold one on there. They've been going for $130ish give or take. If you have an eprom already I would look in to someone selling a v3 ecmlink package at a reduced price. Then sell your eprom. You'll come out better cash wise in the end.

 

[TSI_93]

If your looking to make around 500 whp check the evo x bolt-on manifold thread on here. See if you can get one of the early ones. You can definently get 500 whp out of an upgraded evo X turbo.

 

[Eagle96TalonTSi]

Might want to do your research on how the engine works and what will increase power. Its not as easy as slapping a huge turbo on the car.

Also the maintenance is something you need to learn before you start modding. You can make 500 hp but if you break something everytime you WOT then you might as well be making 200 hp.

 

[WES_393]

im planning on buying a precision 6262 ball bearing turbo with a MAP manifold and tial wastgate is precision a good buy? but i have big list to research

That is a very big turbo for 500hp. Evo guys have been able to make over 700hp, even over 800hp on that turbo. It's not bolt-in either. You will need to do some custom work to make it fit. I'd suggest doing some research before making any decisions. You can have a 500hp turbo setup for half the price of just a 6262.

And no, not all 95's have EPROM. Only the "early" 95 that was built in 1994. Even then it's hit and miss, so it's best to just pull the ECU when your ready to find out.

 

[primo513]

If your car does have an EPROM you will still need to get it socketed to be able to use dsmlink, one of the best things to do is what was stated, finding somebody who is selling dsmlink with a socketed ecu, then sell your EPROM for cash towards dsmlink

 

[95GSXbigturbo]

well if a 6262 is to big for what im looking at i was also thinking like a .60 or .63 trim precision turbo whatever turbo size i buy it will be a precision and ill findout about my ecu in the next couple days is the ETS iintercooler a good upgrade for the GSX? i was looking at a big 3.5 inch with short route piping i have alot of research todo like you were saying..

 

[LandSpeed-DSM]

well if a 6262 is to big for what im looking at i was also thinking like a .60 or .63 trim precision turbo whatever turbo size i buy it will be a precision and ill findout about my ecu in the next couple days is the ETS iintercooler a good upgrade for the GSX? i was looking at a big 3.5 inch with short route piping i have alot of research todo like you were saying..

What the hell is a .60 or .63 trim? "Trim" is a ratio and does not describe anything meaningful without context.

Why are you stuck on precision? A 6262 is not all that over-sized for 500whp, and definitely not a drag only turbo.

I've street driven both a 59mm (S200sx) and a 64mm (4088R) turbo in big T4 turbine housings and they were plenty of fun if you had a complimentary setup and now how to drive.

5858 in T4 .64A/R Divided Turbine if your going for a PTE unit

S200sx 59/74 in T3 .70A/R or T4 .91A/R Divided Turbine for Borg Warner

58mm-60mm HX40 in T3 .70A/R Turbine or HX40 compressor with HX35 turbine wheel in a 12cm Divided Turbine housing

I do not think you are ready to make the jump from mostly stock output to 250awhp/liter just yet.

 

[95GSXbigturbo]

well i have to learn some how trial and error mann
but my cousin had a precision turbo on his built gsx and it spooled hella fast that is why i want a precision turbo... but im just gonna start with small upgrades BFMIC port the big 16G turbo that is already in it so i can get rid of boost creep get a new manifold and external wastgate, dsmlink, eprom ecu, 4inch intake and tune it then get my head modified and get all new internals and big cams and tune it agin and anything else that needs to be done last thing i do is gonna be a new turbo set up...... but my car has had every mainenance done to it in the past 2000 miles have every reicete for everything done so its ready for parts already

 

[LandSpeed-DSM]

There is nothing special about PTE that makes them spool inherently better or worse than any of the other manufacturers.

Spool is as much a factor of the engine setup and vehicle platform as it is the turbo and ambient conditions or fuel type.

They are however insanely expensive and the BB cartridges are usually not worth rebuilding when the time comes, instead the whole CHRA gets replaced.

Ask the guys at Borg Warner, Holset or Forced Perfomance whether BB CHRA's spool any faster or take less power to drive. They'll tell you a comparable modern JB turbo is every bit the same in that aspect.

And you can rebuild them for 1/4 the cost or less of a BB CHRA in most cases.

Do you have E85 available to you in ND?

Skip most of those things for now. You don't want a 4" intake pipe on a 16G.

Porting the wastegate hole is a good idea, or you could just run more boost. It would be good practice if you intend to make 500awhp or anywhere near that number.

You don't need a new manifold, I maxed out a ~65lb/min turbo on a ported 2G exhaust manifold. At the sacrifice of efficiency ofcourse, before swapping housings and manifolds to a T3 and then eventually a T4 backside.

I picked up power every time I got bigger on the turbine side, but for a TD05H turbine wheel and 7cm2 housing on a 16G the manifold is not your restriction. So save any money you would spend on an external gate or manifold for when you change turbos entirely.

Start with ECMLink, a fuel pressure regulator and enough fuel pump/injector for 20% more power than you intend to make on a given fuel.

Always base your fuel on worst case figures.

You want to make 500awhp? Pick a turbo that can move the amount of air you will need. Then pick a cam to suit the turbo, and roughly where that cam likes to make power in terms of rev range. Then pick your turbine housing to match.

Plot your rough estimate for engine demand flow (VE adjusted) on the map to give you an idea of what sort of boost figures you can expect to hit that airflow at.

So for pump gas use a 10:1 AFR for your fuel calc at ~60lbs/min airflow

For E85 I use ~6.7:1

Now find out what pump will flow that amount of fuel at your chosen combined fuel pressure (Base plus Boost pressure)

Now size your injectors. You would be wise to go straight to an FIC2150/ID2200 if you have E85 available.

Based on that above, do the math and find out what you need, it's actually pretty easy and I'm not doing you any favors if I spoon feed you like use X pump with Y injectors and Z regulator.

This is how you need to think from now on, and for every aspect of the car.

 

[EvoXcrZy08]

All it takes is money now that you got a goal in mind.

 

[LandSpeed-DSM]

All it takes is money now that you got a goal in mind.

Bullshit. It takes years of research, experience, as well as trial and error.

Unless you just cut a check for someone like Marco to go to town.

 

[95GSXbigturbo]

so a bb turbo is not the way to go then just stick to a journal bearing then okay well that helps me save some money forsure but like i said that is the last part im adding to the car.. we do have E85 here in ND and i was looking on MAP at there fuel kits are you saying i should just get the E85 fuel kit that is able to support 500hp then add that and tune it for the over sized injectors ### the car is probly only like 250-300hp somewhere in that area you can run e85 injectors that are that big on a car that isnt gonna need that much gas?

evoxcrzy08 guy up there is not very helpful ^^ it will be done by summer one way or another i have the money to put into it and a little know how i have a friend that has built multiple cars to help me i just want to find out the basics of a dsm and what to start with you dont have to hate mann if your going to post something be helpful not a dick your no help...

 

[95DsManiac]

Keep us posted man. I'm Nothing shooting for that high just yet. What all do you got so far? Did you consider what turbo yet? Injectors? Did you ever check to see if you got a EPROM? I got a 95 too and I ordered link and then thought wait what if I don't got eprom . Good thing I did. Hope you got one too. Would make things a little easier. But like mentioned above, got to get it socketed. Fairly cheap. My local tuner did it for $65. Do you only got a awhp goal or you shooting for a certain second as well? Got any pics you could post of things accomplished so far?
Keep us posted.