What's better?

[b5a4erik]

Healo,

Poll above ^

& why please.

I know ideally k04 w/ supporting mods is the way to go with a k04, just wondering about current options while dealing with a possible replacement turbo.

[Dan[FN]6262]

B.

[b5a4erik]

Man you whack haha, posting before I got that poll up :P Tis my first time posting a poll... Modifiy your answer if you'd prefer to do so.

[Bordom]

No poll

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[b5a4erik]

Hm, maybe it takes some time to appear.

Here it is in post form:

A. k03 turbo, on stage 1 k03 tune, boosting 18psi
B. k04 turbo, on stage 1 k03 tune, boosting 11psi, with MBC

[Avant Nate]

Ko4 boosting 17 psi

[DoesntCare]

Personally I think you should run the hardware to match your tune, or get a tune to match your hardware.

I voted Ko3 for that reason.

[b5a4erik]

Personally I think you should run the hardware to match your tune, or get a tune to match your hardware.

I voted Ko3 for that reason.

Word to that, thanks man.

[MetalMan]

Personally I think you should run the hardware to match your tune, or get a tune to match your hardware.

I voted Ko3 for that reason.

Agreed. IMO no point in a K04 unless intending to eventually run the correct supporting mods & tune. A chipped K03 should be faster than an 11psi K04. My guess is better MPG too.

[b5a4erik]

What type of price tag are we looking @ for a tune and supporting mods?

[Dan[FN]6262]

You really want to walk down that road? Budget yourself at least $2k because shit happens.

You'll need:

FMIC
Injectors
Fuel Pressure Regulator
Test Pipe
ECU flash


If you don't want to install a FMIC you could install a Meth kit.

You can save a lot of money by buying certain parts used. Like an ECU with a K04 file already flashed, usually the dudes selling those will give you the FPR that they had to run with that particular tune.

[b5a4erik]

Seems like quite the endeavor.

I already have a High Flow Cat, but getting the FMIC/Meth kit, Injectors, FPR, new ECU flash... that's alot.

I'm thinking: k03 w/ current k03 stage 1 tune & acquiring a Manual Boost Controller so I don't blow another turbo (hopefully).

- - - - - -

"You can save a lot of money by buying certain parts used. Like an ECU with a K04 file already flashed, usually the dudes selling those will give you the FPR that they had to run with that particular tune."

Hmm, lets say I acquire this and a k04. Am I good to go w/o injectors nor a FMIC/Meth kit?

[DoesntCare]

You could get away without the FMIC / Meth, but you will heatsoak relatively quickly

If the tune calls for bigger injectors you will need them.

[Dan[FN]6262]

Some K04 tunes for these cars do not require injectors, but do require a higher pressure fuel regulator. A HFC would be fine over a test pipe.

It's probably not "high" boost blowing your turbos. Usually its a oil starvation issue. So if you throw in a new turbo, whether you decide K03 or K04, it would be cheap insurance to throw in a new oil feed line. Yours might be getting clogged up, not letting the turbo see the oil pressure it should be seeing.

[GrapeBandit]

meth would add to the cost because you will need tuning. OP can get a water/meth kit and run only water, no need for a retune and will have lower IAT's

[Dan[FN]6262]

Nah, that's incorrect.

It would actually be better to run a mixture than just water. You don't need tuned for meth. Meth is a chemical intercooler. Now, you can be tuned to take more of an advantage of meth injection, but its not necessary.

[GrapeBandit]

^so you are telling me meth has better cooling properties than water? if so, why does a higher water ratio to meth have cooler iat's then more meth to water?

not to derail and start a debate, but science says water has better cooling properties than methanol.

[b5a4erik]

Science, man. Science ;)

[Dan[FN]6262]

Lmao show me your data logs showing the IAT differences between straight water and a mix. It's hardly neglible.

I've been using meth injection for a long time, on my vehicles and my customer's vehicles. I've ran straight water vs a mix. Straight water caused more knock corrections after a certain sized nozzle. Water is a liquid that does not compress. So if you inject straight water you are also raising your compression ratio the more water you spray. So, you spray a non-combustable liquid that also does not compress into your combustion chambers, you lower your IAT but raise your compression ratio. Too much compression and not enough octane causes knocking. EDIT: The detnatured alcohol/methanol (whichever you use, both work similarly enough) is what adds octane to help ward off pre-detonation.

This is why diesels run straight water instead of a mixture. It's all about raising the compression on a diesel.

[GrapeBandit]

^neglible, but still there i dont have logs, but i saw them on the net before, maybe they were doctored?

[Dan[FN]6262]

Save a step! Don't buy a meth kit, just dump the water straight into your fuel tank!

[Bordom]

Save a step! Don't buy a meth kit, just dump the water straight into your fuel tank!

Post of the year lol

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[b5a4erik]

Hahah alright now,

So, here's what I'm working with:

A broken power steering rack, and also a possible turbo replacement. So comparatively to all these theoretical upgrades, I'm focused on fixing things right now.

Basically there are 2 GodSpeed turbos:

k03: http://www.amazon.com/Turbo-Charger-...=sr_1_7&sr=8-7

k04: http://www.amazon.com/Godspeed-Charg...ct_top?ie=UTF8

& they are both pretty much the same price.

I would rebuild either of them.

That being the case, if I were to get the k04, I would run it as a straight bolt on, with my stg1 k03 tune, stock SMIC, no H20/Meth kit, @11psi... until I gathered the $ for upgrades.

However, I got a lot a miles, and am focused on simply fixing things for now.

So getting back around to the original question: What do you guys think, worth getting a k04 to run like ^^ for a while, possibly forever?

[GrapeBandit]

Save a step! Don't buy a meth kit, just dump the methanol straight into your fuel tank!

ftfy

[MetalMan]

Whatever you do, also make sure you either thoroughly clean out your oil feed line or replace it. As Dan[FN]6262 pointed out if this is your issue to begin with then you'll have the same problem with whichever replacement turbo you choose.

[b5a4erik]

Whatever you do, also make sure you either thoroughly clean out your oil feed line or replace it. As Dan[FN]6262 pointed out if this is your issue to begin with then you'll have the same problem with whichever replacement turbo you choose.

Will Do.

[Bordom]

Run the k04 in the stock program. S4 guys do it when breaking in a new setup and bigger turbos on the stock program can make for a little fun

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[b5a4erik]

Is it worth going from the k03 / k03 chip ecu to k04 / stock ecu?

[Dan[FN]6262]

Run the K04 on whatever tune you have now.

The difference between a K03 and K04 isn't even 35hp. The big difference is the amount of midrange torque that you pick up.

They both use the same size housings and same turbine wheel. The only difference is the compressor wheel.

You're seriously over thinking this.

[b5a4erik]

I hear ya.

The poll is showing that most people think going for the k03 is a better option.

I'll think about this, but not too much.

Just wanted to make sure a k04 would be okay for the car, that it would run well.

[Dan[FN]6262]

Lol and since when has the majority been correct? That's why we have an electorial college.