Cheapest 300rwhp on an s13 redtop?

[sepulchral]

I know you can get about 285hp with the enjuku racing tuned ecu for 14lbs

but for 300whp what would be the cheapest most reliable and EFFICIENT setup?

im thinking

gt25r turbo $600
550cc injectors $250
jwt ecu $500
z32 maf $100

and a boost controller?

correct me if im wrong i dont know the efficiency of gt25r

[sepulchral]

all thats assuming you have fuel pump, Larger i/c, and full exhaust

[msaskin]

The GT25 is a ball bearing T25, which is basically an overpriced version of the stock turbo with no benefits.

Here's how I would do a cheap 300rwhp.

T28 - $700
550cc injectors - 250 (but good luck finding them that cheap)
ROM Tune (NOT JWT, there tunes are horrible) - 600
Z32 maf - 100

~matt

[sepulchral]

what efficiency is t28 and will it bolt direclty to everythign

[msaskin]

The T28 is the stock turbo on S14 blacktops, so yeah, it's a direct bolt on.

You really need to do some research.

Don't toss around the word "efficiency" unless you know what you're talking about. Do you want to know turbine efficiency or compressor efficiency? At what rpm/boost/airflow level do you want to know it at? What are you assuming the VE of the engine is?

~matt

[sepulchral]

by t28 efficiency i mean what are efficient boost levels, like for a t25 its about 14psi, etc..




who ROM tunes ECU's?

[mr_240sx]

would AEM EMS be better then JWT tuned exu or a ROM tuned ecu?

[msaskin]

I would have enthalpy (scott avoy) do the ROM tune. Best way to get it done by far.

I'm a huge proponent of the EMS (hell, I run one myself) but it's not for everyone.
reason 1 - about $2000 after buying all sensors
reason 2 - you really need to know how to tune
reason 3 - $450 for a wideband o2 sensor or about the same for dyno tuning

The 14psi figure for a T25 is basically the upper boost level before it starts blowing hot air. For a T28 I believe it's somewhere in the 18-20psi range, but I'd have to look around to be sure.

~matt

[sepulchral]

I would have enthalpy (scott avoy) do the ROM tune. Best way to get it done by far.

I'm a huge proponent of the EMS (hell, I run one myself) but it's not for everyone.
reason 1 - about $2000 after buying all sensors
reason 2 - you really need to know how to tune
reason 3 - $450 for a wideband o2 sensor or about the same for dyno tuning

The 14psi figure for a T25 is basically the upper boost level before it starts blowing hot air. For a T28 I believe it's somewhere in the 18-20psi range, but I'd have to look around to be sure.

~matt


im talking more aobut something you can install and never touch again

[msaskin]

I know. That's what a ROM tune is. Contact enthalpy.

~matt

[TokyoNights]

a 100shot of NAWWWZ

haha you said 14psi is an efficient boost level for t25

[kazuo]

haha you said 14psi is an efficient boost level for t25

Damn man, I was gonna make a crack about that, but ya beat me to it... ;)

Obviously this guy needs to do WAY more research before he starts trying to aim for 300whp, cus with that sort of "knowledge" his car will explode in his face.

Fuck JWT, get Enthalpy to reflash your ECU.

And do some research.

[sepulchral]

Damn man, I was gonna make a crack about that, but ya beat me to it... ;)

Obviously this guy needs to do WAY more research before he starts trying to aim for 300whp, cus with that sort of "knowledge" his car will explode in his face.

Fuck JWT, get Enthalpy to reflash your ECU.

And do some research.

Exactly that is why im asking, im not born with this knowledge like some of you are :D jk Why would i do research id rather have my motor blow up in my face :cj:

[weirdstyles.net]

I thought JWT was teh r0x0rz? Who the f is Enthalpy?

[mr_240sx]

Who the f is Enthalpy?
beats me!! probably some basement shop!

[TokyoNights]

basement shop my ass, he used to work with secret services
Scott
Custom S13 SR ECU Programming Available - E-mail for details.
[email protected]
AIM - Enthalpy1200

he also put down 539Hp - 26psi,,hes the man to see when it comes to sr tuning

[msaskin]

a 100shot of NAWWWZ

haha you said 14psi is an efficient boost level for t25

Please enlighten me as to how 14psi is not an efficient boost level for a T25.

Sure, boost will fall off towards redline simply because the compressor can't keep up with the intake demands of the engine, but in the lower RPM range where it's making 14psi it's doing it without super-heating the air, therefore making it efficient.

Also, JWT is anything but the r0x0rz. Have you ever seen a dyno of one of their tunes? A/F ratio is ALL over the place (not a straight line as it should be), and the timing is WAY conservative.

~matt

[FRpilot]

Exactly that is why im asking, im not born with this knowledge like some of you are :D jk Why would i do research id rather have my motor blow up in my face :cj:

none of us are born with knowledge. we research, study, and learn how to tune our cars before we do it. are you expecting us to hand you out a freebie? give you all the advice you need? some of us will help you out a little and tell you the basics, but if you really want to get things done, you'd have to do a majority of the research yourself. otherwise, just get a shop to do it for you..

[sepulchral]

none of us are born with knowledge. we research, study, and learn how to tune our cars before we do it. are you expecting us to hand you out a freebie? give you all the advice you need? some of us will help you out a little and tell you the basics, but if you really want to get things done, you'd have to do a majority of the research yourself. otherwise, just get a shop to do it for you..


if i planned to do it i would research, i was just wondering,

[Var]

s15 turbo
hks cams
headgasket
injectors
tuning

weeeeeeeeeeeee

[sepulchral]

s15 turbo
hks cams
headgasket
injectors
tuning

weeeeeeeeeeeee


haha i like the sig, when did isay that i forget :rolleyes:

[Var]

haha i like the sig, when did isay that i forget :rolleyes:


2006 z06 thread...if it offends you i will remove it. if you're okay with it then good sport

[bleach8484]

On the FA forum, Enthalpy posted dyno charts to compare his ROM tune to JWT. Enthalpys tune made somethin like 42 more HP at certain spots on the chart. Thats hella impressive

[evilimport]

^ AND he did it on a stock bottom end too...Enthalpy knows his shit and he could kick Jim Wolf's ass in a fight....:D

[sepulchral]

its cool westborough doenst offend me lol

[s14falcon]

The GT25 is a ball bearing T25, which is basically an overpriced version of the stock turbo with no benefits.

~matt

He didnt say gt25, he said gt25r, so he probably meant the gt25r which is not just a ball bearing t25, the one with a t04 compressor housing and such. Go check out fa, people put down 300whp no problem with a gt25r, many do more. I think the turbo has a longer specific name and people jsut refer to it as a gt25r. Only thing is i dont know where you can get one for 600 dollars.
dyno sheet and thread (http://forums.freshalloy.com/ubbthreads/showflat.php?Cat=&Board=UBB9&Number=67875349&Forum=All_Forums&Words=gt25r&Match=Entire%20Phrase&Searchpage=3&Limit=25&Old=allposts&Main=67875182&Search=true#Post67875349)

And then yeah, if he meant just a ball bearing t25 then id look elsewhere too.

[msaskin]

falcon, I know, I had a GT25R on my car before I got the GT2871.

If you want to get real technical, the GT25R (as in the 400hp capable one) is technically called a GT25/40R by garret. The ball bearing T25 is called a GT25R, but that's only getting technical ;)

~matt

[TokyoNights]

Please enlighten me as to how 14psi is not an efficient boost level for a T25.

Sure, boost will fall off towards redline simply because the compressor can't keep up with the intake demands of the engine, but in the lower RPM range where it's making 14psi it's doing it without super-heating the air, therefore making it efficient.



~matt
At 14 it IS starting to blow hot and it IS maxed out.

[prophet_19]

wow dont know whats going on

:newbie: :newbie: :newbie:

[s14falcon]

falcon, I know, I had a GT25R on my car before I got the GT2871.

If you want to get real technical, the GT25R (as in the 400hp capable one) is technically called a GT25/40R by garret. The ball bearing T25 is called a GT25R, but that's only getting technical ;)

~matt

Alright, thats what i thought, i looked it up afterwards for the specific name. Anyways, its all just being techincal.

I see more people running gt2871s lately, maybe its just me. Are there any specific advantages over the GT25/40R? Higher power, beter response?

[msaskin]

Same power, better response. The GT25R basically just slams into boost from about 3700-4000rpm. Granted playing with timing maps will affect that a bit, that's how I had it spooling. It was cool, but just was an intant hit.

The 2871 started making appreciable boost at about 3200rpm or so and was at full boost (18psi most of the time in my case) at around 3800-3900rpm. It just had a more linear feel to it.

The car felt faster with the GT25R, but I was able to keep traction in 2nd gear and above with that turbo. With the 2871 despite feeling a bit slower I would constantly light up the rear tires (245 width azenis sports) in 2nd gear once boost hit.

~matt