TD06-20g vs BEP s256 vs BEP 50trim (old school)

[shidie6990]

Which one u will get if u target for 400hp on stock 6bolt?

Mod done:
FMIC Stainless steel intercooler piping, evo3 intercooler
Greddy type RS BOV
Turbosmart Ultragate 38mm, mounted in o2 housing
Turbosmart MBC Boost Tee
Custom O2 housing
Megasquirt-II
TDO5h from evo3
FIC 750cc
MLS 1.5mm
NGK Power cable
everything else is stock evo2 @ 7bolts


Next mod (I got all things and ready to go ):
Bullseye s256 DSM flange a/r.55
Rebuild stock 6bolt with King Bearings, ARP Headstud, Cometic HG, Balanceshaft remove, using back 2g head
Fidanza Flywheel
Ported evo manifold
Full 3inch exhaust system

I'm targeting 350-400hp on dynodynamic by 21psi (because my Megasquirt-II on board map sensor limit it )..
Which one will spool faster? which one have best useable power?
Actually I have s256 on my hand now, but i'm afraid at 21psi, s256 will not show its true power because some say this turbo need a lot of boost to shine.
There are 2 of my friends offer me a swap with their turbo (Greedy TDO6 20g and BEP TO4b 50 trim) and top up cash, with this cash I can go forged my internal and still I have 350-400hp capable turbo and a lot of boost. If I use s256, I just got stock 6bolt. Help me, I'm in big dilemma
BTW, all I want is below 400hp. So can DSM'er give me some suggestion?

p/s: Sorry for my bad English ;P

 

[MY1GDSM]

keep the S256 DO NOT trade it for a to4b. find a out what you have to do to run a larger Map sensor with megasquirt

Edit:
Hear check this out

http://www.diyautotune.com/catalog/mapdaddy-bar-map-sensor-with-barometric-correction-p-117.html

 

[shidie6990]

keep the S256 DO NOT trade it for a to4b. find a out what you have to do to run a larger Map sensor with megasquirt

Edit:
Hear check this out
MapDaddy 4 Bar MAP Sensor with Barometric Correction for MegaSquirt DIYAutoTune.com

thanks for your advised.. I know I can upgrade my MS-II map sensor but I'm really afraid to push s256 boost to 25psi with stock 6bolt bottom. Or its just me too paranoia?

 

[juanpac0]

You're just being paranoid.

 

[shidie6990]

You're just being paranoid.

I dont now why, people in my place, Malaysia, keep telling me that I cannot boost over 21psi in 6bolt, they say engine will be break down anytime

 

[DSMtsi23]

I dont now why, people in my place, Malaysia, keep telling me that I cannot boost over 21psi in 6bolt, they say engine will be break down anytime

It all comes down to your tune. Plus if you beat on it all day at 21psi something will give. Whether it be clutch, tran, motor, etc. There all lots of turbos that can get you that 350-400 hp. Id say Evo3 16g

 

[Killa_dsm]

I dont now why, people in my place, Malaysia, keep telling me that I cannot boost over 21psi in 6bolt, they say engine will be break down anytime

Well those people are wrong. Its all about the tune. 4WARND ran a 10.12@140mph on a stock short block recently.

 

[shidie6990]

It all comes down to your tune. Plus if you beat on it all day at 21psi something will give. Whether it be clutch, tran, motor, etc. There all lots of turbos that can get you that 350-400 hp. Id say Evo3 16g

Now I use evo3 16g at 1.4bar@20psi on stock evo2(7bolt) engine. I made 242hp on dynodynamic. But something weird when I dyno tune my car, boost at 1bar@14psi will get 240hp then i increased to 1.4bar (20psi) Hp just increases slightly to 242hp only Maybe something wrong with my car but I did't bother because 6bolt ready to be rebuilt.

how much I can expect from s256 a/r.55 at 21psi with stock 6bolt (7:8:1 compression) with my next mod list? Did s256 shine at 21 psi?

Well those people are wrong. Its all about the tune. 4WARND ran a 10.12@140mph on a stock short block recently.

Well, maybe because of the hot weather here? Or lack of skillful tuner?
Well i thinks I will try to push the 6bolt for 400hp

 

[MY1GDSM]

I wouldn't worrie at all about running more boost I've been running 25-30psi for a few years with just a set of APR head studs... .
What octane gas do you have over there? that's what going to limit you the most...
the higher the octane the more timing you can get away with, the more power you can make

 

[JusMX141]

But something weird when I dyno tune my car, boost at 1bar@14psi will get 240hp then i increased to 1.4bar (20psi) Hp just increases slightly to 242hp only

If your tuner didn't know what they were doing, it's possible you were getting a ton of knock which was pulling timing down to nothing. There's no other explaination as to how you could add 6psi of boost and gain 2hp.

14psi @ 17* of timing will make more power than 20psi @ 8* of timing.

 

[DSMtsi23]

Theres something wrong with your setup and tune if your only pushing 240 hp with 20psi. Most people will be well 300hp to the wheels with 20psi and the correct supporting mods. What are u using to tune with?????

 

[shidie6990]

I wouldn't worrie at all about running more boost I've been running 25-30psi for a few years with just a set of APR head studs... .
What octane gas do you have over there? that's what going to limit you the most...
the higher the octane the more timing you can get away with, the more power you can make

Here I'm using RON97 fuel, I don't know how much octane if compare with yours 93 Octane..

If your tuner didn't know what they were doing, it's possible you were getting a ton of knock which was pulling timing down to nothing. There's no other explaination as to how you could add 6psi of boost and gain 2hp.

14psi @ 17* of timing will make more power than 20psi @ 8* of timing.

I guess so. I dont now how much timing i'm running now need to ask my tuner later.

Theres something wrong with your setup and tune if your only pushing 240 hp with 20psi. Most people will be well 300hp to the wheels with 20psi and the correct supporting mods. What are u using to tune with?????

Yeah, i think something wrong with my setup or tuning. Still searching what cause it. I'm using Megasquirt II for EMS.


Anyway, thank you so much for all your concern, guys. Now I have courage to use my stock 6bolt, hope can get above 340HP on dynodynamic with 22psi

 

[Red Alert]

Here I'm using RON97 fuel, I don't know how much octane if compare with yours 93 Octane..

To compare to ours, we would need the motor octane number as well. But if your research number is 97 your motor octane is going to be lower anyways.

For example, when I took the samples of our reformate this morning here at the refinery I work at, our research number came back as 97.8 octane, and motor came back 86.8. To get the number we see at the pump you find the average which puts it right around 92 octane.

 

[shidie6990]

To compare to ours, we would need the motor octane number as well. But if your research number is 97 your motor octane is going to be lower anyways.

For example, when I took the samples of our reformate this morning here at the refinery I work at, our research number came back as 97.8 octane, and motor came back 86.8. To get the number we see at the pump you find the average which puts it right around 92 octane.

I guess so.. We also have RON99 here but quite expensive
I think I need water/methanol kit to boost up my octane

 

[shidie6990]

need to ask something bout s256 installation..

for oil feed: feed from Head or OFH? if OFH need to port (I remove balance shaft)? what size? -4an? need restrictor?

for oil drain: s256 oil drain flange is it same with garret t3 oil drain flange? what size i need, -10AN?

 

[toofast82]

I'd keep the s256. The water/alcohol injection might not be a bad idea if you're having a hard time getting your hands on good gas. Stock 6bolts have put down some serious power and it's all in the tune as far as how much power you make and how your engine handles it

 

[thilaksharma]

of all those 3 turbo's , i guess the s256 would be latest design of all of those 3 and will offer higher PR according to tis compressor maps,

so syidie its time to fuel in race fuel n turn up the boost hehehehe

 

[08talon08]

The T04B is garbage. Keep the S256 you wont be dissapointed

 

[Mindslayer]

I got 298whp at 17psi(very rich) 9:5:1 on my old school 60 trim a few weeks back

 

[shidie6990]

of all those 3 turbo's , i guess the s256 would be latest design of all of those 3 and will offer higher PR according to tis compressor maps,

so syidie its time to fuel in race fuel n turn up the boost hehehehe

bro very shy u see me posting in here

BTW, guys, somethin wrong with my car, when I cruising in 4th or 5th gear in 4-4.5k rpm, my car start jerking, when boost start coming in, it will jerk. But if you paddle all the way, its fine. Only when I'm cruising and then I paddle slowly, when boost at 0psi it will jerk but after that it will be ok.. wonder whats wrong with my car..

 

[sketzshane]

If you worried then go and buy a Methanol/Alcohol Injection Kit and turn up some boost. I don't think you going to make far above 330-350whp with the Evo 3 turbo (yes to the wheels not flywheel) so if you want to make more than that then a turbo upgrade would be in order. Why it is that your are only look at these turbos? FP has great turbos such the Green, Red etc... so you could also look into one of those.

I have used 2 of the turbos above on my 98 GST. 1) The TD06H 20G was nice yet I didnt like the fact that it was alittle laggy up to around 4500 yet the mid range was strong, got full boost in early gears (linear-ish turbo) 2. BEP 50 trim was nice, also a little laggy at first to around 4000rpm, only got full boost in late 2nd gear and above. It came in alot more aggressive though but turbo didn't last long. I believe the Green and Red are better turbos.

 

[shidie6990]

the reason is I got s256 on my hand right now.. and I can get td06 20g and tO4B 50 trim for a cheap.. actually I'm planning to drag race but here in Malaysia most of the track is only 300m. So I want to choose the suitable setup for 300meter and we dont have timing machine, its either you win or loose, side by side with you competitor..

 

[Mindslayer]

stay with you s256 and you'll be very pleased.

 

[shidie6990]

stay with you s256 and you'll be very pleased.

thanks! just wondering how much roughly s256 make with 22psi and stock 6bolt

 

[Mindslayer]

You wont know until you try. Aim for 11.6-11.7 AFR got 93 oct. You'll be around 400ish whp I'm thinking