Shooting for 250hp on GST need a little help.

[boosted99_420]

Ok guys ive heve been with out boost for to long and just dont have te funds to boost my 420, so i am reviving my GST. I am aiming for 250hp with minimum bolt ons.
Heres what i am planing currently:

14b turbo
Manual Boost Controller (15psi)
2.5in exhaust from down pipe back (No Cat)
1st gen BOV
IC Hardpipes

this is all i have so far. is there anything else i would need to make 250hp or around that area. I am planning on ordering some 560cc injectors, walbro 255lph HP, High Volume Fuel Rail, FMIC, and DSM link v3; in the near future the going to 17psi if a stock block can hold it, as far as i know i have a 6 bolt block w/7 bolt head. If i need anything else to reach 250hp please let me know so i can order it or ask a few friends for it. I hope its not that much cause i am low on build funds after getting needed parts such as EGR Solenoid, fuel rail spacers, banjo bolt, and a few other little things that added up quick.

Thanks for help.

 

[hurricanecris24]

you dont need a new fuel rail stock one is good enough. looks like a good list you dont need an 255 fuel pump i would get an 190 or an evo one.

 

[boosted99_420]

you dont need a new fuel rail stock one is good enough. looks like a good list you dont need an 255 fuel pump i would get an 190 or an evo one.

ok ill look at a 190 and take out fuel rail.

 

[hurricanecris24]

190 should be good up to 400hp. also you could go on evolutionm and find fuel injectors and fuel pump for cheap

 

[Bluefire16]

You realize a stock DSM is rated at 210hp? A average and this is a ROUGH avg is 7hp for every pound of boost.

Do not JUST CRANK YOUR BOOST.

Get a logger, a bigger pump, and something to tune, and you can easily hit it.

If you do all the basic you will hit it no problem, with that 14b if you run about 18psi on a bigger pump you should already hit it. 250hp is really nothing....

 

[boosted99_420]

You realize a stock DSM is rated at 210hp? A average and this is a ROUGH avg is 7hp for every pound of boost.

Do not JUST CRANK YOUR BOOST.

Get a logger, a bigger pump, and something to tune, and you can easily hit it.

If you do all the basic you will hit it no problem, with that 14b if you run about 18psi on a bigger pump you should already hit it. 250hp is really nothing....

Do you not realize i said in there i dont have the money to get a bigger fuel pump and crap right?

 

[black91awdturbo]

Do you not realize i said in there i dont have the money to get a bigger fuel pump and crap right?

Hmm thats odd because your first post said you are ordering a 255 walbro did it not? Also if you think you can just jack up the boost with no fuel mods etc please sell the car now while its still worth some thing.

 

[boosted99_420]

Hmm thats odd because your first post said you are ordering a 255 walbro did it not? Also if you think you can just jack up the boost with no fuel mods etc please sell the car now while its still worth some thing.

you cant read either can you it says in the NEAR FUTURE!! so what dont you sell your car now so someone else can fix the crap you have messed up. And i have read up about turning up boost 15psi is good and safe on a stock fuel system. so you need to do some more research yourself.

 

[GsxEcutioner]

you cant read either can you it says in the NEAR FUTURE!! so what dont you sell your car now so someone else can fix the crap you have messed up. And i have read up about turning up boost 15psi is good and safe on a stock fuel system. so you need to do some more research yourself.

Your a newb, you do understand your seniority over most people here is very minimal.if you ask for help, dont snap back, its how your going to get flamed and banned.

 

[crash89]

Alright children, 15 psi is pretty much almost maxing out your stock fuel system. Like stated above there is really no need for the high volume rail, stock will be just fine. Ive seen a few people on here running 500 hp on a stock bottem end, but 400hp would be keeping it safe. Mr Peepers made over 300 at the wheels on a 14b and a safc. So just keep up with the upgrade path and youll be there in no time!

 

[boosted99_420]

Your a newb, you do understand your seniority over most people here is very minimal.if you ask for help, dont snap back, its how your going to get flamed and banned.

ill snap back if i know someone is wrong or try to insult me like this. Senority doesnt mean they know more than someone else.

Alright children, 15 psi is pretty much almost maxing out your stock fuel system. Like stated above there is really no need for the high volume rail, stock will be just fine. Ive seen a few people on here running 500 hp on a stock bottem end, but 400hp would be keeping it safe. Mr Peepers made over 300 at the wheels on a 14b and a safc. So just keep up with the upgrade path and youll be there in no time!

Thank you, so is my current parts enough for 250hp if not ill get some minor cheap stuff. (Current list is the 14b, ehxaust, etc)

 

[97-gst]

With a 16g you should definitely be able to achieve 250 hp easier...

 

[crash89]

With a 16g you should definitely be able to achieve 250 hp easier...

Itd be easier to achieve yes, but he stated he is short on funds. A 14b can get there pretty easily as well. The essentials you WILL need will deffinately be at least a 190 fuel pump and some injectors, (560s) will get you there comfortably. Also include some kind of logging softwear and a safc. follow that and youll be upwards of 300 whp. Keep a look out on craigslist for some good deals on some of these items.

 

[boosted99_420]

Itd be easier to achieve yes, but he stated he is short on funds. A 14b can get there pretty easily as well. The essentials you WILL need will deffinately be at least a 190 fuel pump and some injectors, (560s) will get you there comfortably. Also include some kind of logging softwear and a safc. follow that and youll be upwards of 300 whp. Keep a look out on craigslist for some good deals on some of these items.

Yea i have been on craigslist alot thats where im gettin the 14b, im gettin it the 1st gen BOV w/all the hardware, extra exhaust housing, extra wastegate, and a few others for 155 shipped so craigslist is great. And as for a fuel pump i have a 255LPH HP in my house right now but its for a 87-94 Mustang i belive. If i can make it work i would use it but dont know if it will and buy some injectors after i sell my T25 for like $75 (and if the 14b doesnt need to be rebuilt). I may end up getting a small 16g in a few months anyways or a 14g (flows better than 14b and can hold higher boost with same quick spool if you dont know what it is) from a friend. Thanks for the help ill update as soon as i get it done and running again. Parts to finish the engine should be here tomorow and ill put on the T-25 for now but some boost is better than no boost.

BTW what is a good SFAC to get i am looking at a Apexi Neo but do not wanna drop $370 for it.

 

[Hubbell91Tsi]

Just put a 250shot on the bi*** and call it a day.

/thread

 

[Aceman]

Ok guys ive heve been with out boost for to long and just dont have te funds to boost my 420, so i am reviving my GST. I am aiming for 250hp with minimum bolt ons.
Heres what i am planing currently:

14b turbo
Manual Boost Controller (15psi)
2.5in exhaust from down pipe back (No Cat)
1st gen BOV
IC Hardpipes

I would turn the boost down to like 10 if I were you...otherwise, I would guess that would just about get you 250hp right there...are you talking horsepower to the wheels? I don't see how all of that wouldn't net you 40hp over stock. I'm using the dyno sheets provided on this website, and there is one guy who got 206hp to the wheels at 16psi on a t25 with similar mods. The dyno sheet does say that it was in september in MA, so it was probably some pretty low intake temps which will affect the numbers though. Still, that should be close to 240hp at the crank. According to Road Race Engineering's website, a 14b at 16psi only needs an upgraded fuel pump to support it, and I'm sure that would get you to 250hp to the crank. As far as bumping it up to 17psi you just need to get a 190lph fuel pump and 550cc+ injectors and you might as well rewire the fuel pump wiring as well. At 17psi with those mods, I would think you would be approaching 290hp/245whp. 18psi should get you 250whp. So:

250hp(crank hp)
-190lph fuel pump
-logger
-tuning device
-12psi (maybe less)

250whp(about 290-300hp at the crank)
-190lph fuel pump
-550cc+ injectors
-logger
-tuning device
-18psi

Horsepower for cheap is what these cars are good at
Again, I'm going off of dyno sheets and RRE's website

[edit]
You can use an safc-II, you can get one off of ebay for like $100-150. If you use dsmlink you won't need it though, but you should get a logger.

 

[9!'clipseDOHC]

Yea i have been on craigslist alot thats where im gettin the 14b, im gettin it the 1st gen BOV w/all the hardware, extra exhaust housing, extra wastegate, and a few others for 155 shipped so craigslist is great. And as for a fuel pump i have a 255LPH HP in my house right now but its for a 87-94 Mustang i belive. If i can make it work i would use it but dont know if it will and buy some injectors after i sell my T25 for like $75 (and if the 14b doesnt need to be rebuilt). I may end up getting a small 16g in a few months anyways or a 14g (flows better than 14b and can hold higher boost with same quick spool if you dont know what it is) from a friend. Thanks for the help ill update as soon as i get it done and running again. Parts to finish the engine should be here tomorow and ill put on the T-25 for now but some boost is better than no boost.

BTW what is a good SFAC to get i am looking at a Apexi Neo but do not wanna drop $370 for it.

Never heard of a 14g.

The problem with using a 255 lph fuel pump is that it will over run the stock fuel pressure regulator, causeing your car to run very rich at idle and normal driving, although it won't be much of an issue once you get in the boost. This adds an additional ~ $200. That is why it would be simpler to use a 190 lph pump with your goals.

An SAFC-II is what most people on here have always used. If you are considering going with v3 lite sometime in the future than just save up for it, there is no need to buy stuff twice.

Also with your goals just hang with the 14b. Save the money you would spend on the 16g (or 14g, whatever that is) and use it towards v3 lite.

Also you mentioned getting a 2.5" exhaust, most of the time is cheaper just to go with the 3" because the are used more often. Shop around.

Hope this helps!

 

[boosted99_420]

Just put a 250shot on the bi*** and call it a day.

/thread

put it on yours and let me know how much stuff you break.


Yea im just shooting for crank HP for now at least 200 to the wheels.

But a 14g is a Mitsubishi Turbo and is a stock upgrade for a Starion ill post the numbers for it below vs 14b.

This info is off of Evolutionm.

TDO5H-14B-6CM2 405 CFM
TDO5H-14G-8CM2 465 CFM

My friend is currently useing the 14g on his starion as i said and it spools super quick. And according to the AEM boost guage (so i know its good)
He runs about 25-26psi and it still pulls perfect. Only down side is the wastegate is blocked off from the factory so reguardless of what he does except building a custom downpipe flange thing he will keep running this boost.

I have been told buy some people also that 3in pipe is to big when you not going for race but i dont know nothing about exhaust.

 

[Aceman]

3inch piping is uneccesary for a 250hp goal and would move your power band up so that less power would be available for low rpm normal driving situations. In a racing situation when you are in high rpms more often the extra hp would be usable. A 2.5" exhaust probably wouldn't become a restriction unless you were approaching 400hp and a 2.5" set up leaves more of your power band in lower rpms.

 

[GsxEcutioner]

ill snap back if i know someone is wrong or try to insult me like this. Senority doesnt mean they know more than someone else.



Thank you, so is my current parts enough for 250hp if not ill get some minor cheap stuff. (Current list is the 14b, ehxaust, etc)

Arguing will get ou nowhere and talking back will get you in trouble, and theres an upgrade path for you up top ^^^
-shane

 

[Project2G]

Why not sell one car and keep the other?

 

[AK Maniak]

Why not sell one car and keep the other?

### DD and DSM don't mix. I learned the hard way and I now have a DSM that i can't drive

 

[Project2G]

### DD and DSM don't mix. I learned the hard way and I now have a DSM that i can't drive

If he only want's a measly 250hp the car will be just fine as a DD. Also he could sell the dsm and boost his 240.

 

[Bluefire16]

If you want to act like a punk when people are telling you what you will NEED, when you ask for WHAT YOU WILL NEED, then so be it.

I cant believe you even need to ask something like this.

As far as people saying to run 12psi... stock 2gs will run a minimum of 12psi and up to 14psi stock. You can safely run a couple pounds more with no issues. People say no more then 15psi on a stock turbo because its so small and maxed.

I was running 18psi on a small 16g, and my car was fine. If you ever read the 14b install on a 2g thread, the guy estimates that alone is near a 50hp increase from that alone.

Now just read the upgrade path and stop beating this thread that has been asked and answered 1676439883439 times already.

 

[standard235]

3inch piping is uneccesary for a 250hp goal and would move your power band up so that less power would be available for low rpm normal driving situations. In a racing situation when you are in high rpms more often the extra hp would be usable. A 2.5" exhaust probably wouldn't become a restriction unless you were approaching 400hp and a 2.5" set up leaves more of your power band in lower rpms.

Explain yourself.

Backpressure is provided by the turbo itself, so don't give me the old N/A talk that doesn't apply here. If anything, bigger exhaust would lead to faster spool which would move your torque peak EARLIER.

Oh and scavenging is also not really a factor here. Shortest, biggest exhaust is best.