sleeperfc

so im looking into the many option of turbo upgrades.... i have a stage 1 hybrid now and make 275 at 13psi. with the tmic and 2.5" catback its not bad.... But thats not what im asking anything about


So There is a local turbo shop that has great prices on custom hybrid jobs...
He says the biggest i could go without a spacer for the manifold would be a t04b 60 trim. I have no clue how much bigger that would be then what i already have.

Alright so if the space limit was not a problem (custom manifold) then how big could i go before it gets stupid. Im talking like a t61, t66 or t70 huge cold side... .70a/r

I know most people are running the modded 60-1 hybrid because it fits. But im asking what would be a killer combo if fitment was not a problem?

Fmic and wideband are in the mail. Im getting a haltech in the next week or so and bdc is comming to town to work on a buddys car so tuning should be covered.

425-450rwhp on a hybrid at 15-18psi? can it be done?

SidewaysFC

I'd say you'll end up at most with 350whp with good hybrid and good tune. Of course I don't speak from experience, but there are a few with 300whp around 10 psi.

The bigger you go beyond a certain point will only cause bigger issues with back pressure and boost drop-off. Your trying to cram 5 lbs of **** into a 3 lb bag. Keep the researching up.

RotaryEvolution

iTrader: (30)

stage 4 and the haltech with a good tune and proper fuel mods and FMIC you could do 400+ but what is your turboback diameter? is it 2.5" single catback? port work?

more info would be nice also.

sleeperfc

ok i have a 3"dp and 2.5 catback no cat.... i know its holding me back so im ordering a 3" turbo back asap.

with all the support mods and proper setup im wondering if a big hybrid would work or should i just stop being stupid and get a full upgrade?

i do mostly highway and drag racing so lag is not to much of a issue. A wall of a dyno sheet shounds good to me.

my motor is a s4 stock port.

sleeperfc

well i have been reading up and it seems the hot side of the stock setup is teh suck when it come to making big power.

mmmm guess its time to spend hours reading what turbo to run on a stock port s4 to break the 400whp mark on 15-16 psi with pump gas.

RotaryEvolution

iTrader: (30)

with a stage 4 the hot side is larger so it can push a bit better numbers but you won't be getting 400RWHP with stock ports even with a stage 4, probably 350ish.

sleeperfc

if i cant get 400 with stock port.. then the 60 trim to4b hybrid seems about right. no point in going all out if its not going to make the mark.

Well i do want to go with a larg port some day.. but this motor is low mile and strong so id like to run it out.

RotaryEvolution

iTrader: (30)

not sure even a T04b will do it on a stock port, you might need both a larger cold and hot side which=more bottom end lag because you are trying to work around the stock ports.


i'm no turbo expert but i think you are expecting a bit much without spending a lot of money on a big turbo.

hopefully one of the better turbo knowledgable guys will chime in here.

RETed

Even if you can keep that giganormous hybrid together, your stock ECU and fuel system cannot support that kinda power.

Please, do your research.
Don't expect big power increases to come cheap.
With the bigger "turbo", you need to have enough fuel.
Even with 4 x 720 fuel injectors, that can support about 300hp at the rear wheels.
You're still off by 100hp, if you're trying to shoot for 400.
550 primary + 1600 secondaries is a popular combination, and this barely supports 400hp at the wheels.
Don't expect the stock ECU to control such a "radical" fuel injector combination.


-Ted

sleeperfc

thanks for reading my post before making one of your negative posts... ohh wait you didnt! haltech tuned by bnr should do it ya think?!? im just trying to figure out all the options before i spend the money. best bang for the buck if you will...

RETed

Does that mean you already have the Haltech installed (and tuned)?

What fuel pump are you running?

What size injectors are you running?


-Ted

Bukwild

I am hoping you can get 400 plus rwhp with a stock port. I will let you know hopefully in a month. I wouldn't think you could do this with a hybrid because the s4 manifold is so small. I will drop you a PM. I have some stuff that might help you out.

sleeperfc

the haltech is comming i worked out the ordering details lastnight.

walbro 255 in tank

was planning on 680 and 1600 combo

i have a 24x12x3 fmic going on this weekend

im pricing water/meth injection kits.




i know what i need to tune "it" just asking about what turbo i should make 'it"

thanks for your concern it did read alot like a n00b post now that i go back and proof it.

ultradef

If you're looking for 400+ rwhp, just pony up and get a full turbo upgrade. Hybrids are great for up to 350rwhp and can save you a few $ over a "real" turbo, but they have their limitations. It takes money to make big power...you already are shelling out for a nice standalone, FMIC, water/alky injection, etc. - why not go all out?