Have you been "playing with Google" Pete ? :eek:

I have indeed Pete

I have indeed Pete

i like

from what i've heard a sensible aplication of NOS will infact help stop detonation rather than cause detonation as it cool the block. but please, correct me if i am wrong as this just what i have been told

Eddy, I don't know how long the 5 minutes would last in normal use. My guess is the first week you'd need 2 refills, then you'd begin to get tired of the hit on your wallet, and use it very sparingly. In which case, I still think it's an expensive way of getting a short "hit". I'd rather have something that gave me more power under my right foot on a progressive basis. That's just me - I accept others have different priorities.

IP also do NOS....ask Des.

Don't think they do the progressive controllers though.

I had a look into this...other option big turbo. It is around half the price of the big turbo but it is for something that doesn't last a long time i.e. you have to refil.

I understand you can make the NOS last for sometime but, IMHO, I would rather have something I know is going to be there, all the time, every time.

From what I read James knows his NOS so there should be no problems and the progressive controller is the way to go, if you go this route.

Apart from James I don't think anyone else is running NOS here.

Sorry can't be anymore helpful.

Cheers.

eddy - http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=9889&item=2492502083&rd=1

Thanks Camerashy but that's a standard TDI turbo.

My concern with a big turbo is loosing the bottom end power of the standard turbo. Having been in an IHI'd 1.8T it lacked the big lowdown hit of the K03S, this actually aided traction on the FWD but this isn't an issue I have.

I also think not having the power there all the time isn't necessarily a bad thing. It means less stress and better mpg, but at the flick of a switch that bit extra on what is already a quick car is available. A refil for a 5lb bottle is around

My honest view?

It will kill the Haldex.

Mine was failing (or at least the rear tranny) on 35k miles, others have not, but then others have had others issues I did not, swings and roundabouts.

I Would if your willing to do somthing with the haldex anyway.

This, although very minor and some of the other issues you posted today are to be quite frank a large part of me selling the 4x4. I'd have one again, jsut Iwanted to do alot with it, but never found anybody with time/incentive other than my wallet to spend 5 mins thinking about it.

You should not have to worry about much at the lights anyway, I do now, but didn't used to have to worry, maybe a bit in the wet, but that was more what can I get away with

If it does not kill the haldex your going to be a little on the swift side Can I blaga ride

Thanks Colin, some interesting points.

I'm definetly going for more power in some form so it looks like my car is gonna be the guinea pig. If the haldex isn't upto the job I'll source one from a TT225/S3 or R32 as there's plenty of those around running big power.

Gotta agree that off the line performance is excellent already and I'd be unlikely to use NOS in 1st gear.

No probs on the test drive!

try nos.... for sub 1k what do you have to lose..

but you could do a k04 upgrade for that..... which I think is better.. and defo cheaper over a year to run.....

having said that it depends what other mods you wanna do? would not change turbo if not doing fmic for example....

I had a K04 on my Golf and wasn't impressed, it's not something I'd do again or recommend to others.

Progressive NOS is around

I had a K04 on my Golf and wasn't impressed' date=' it's not something I'd do again or recommend to others.

[/quote']

What was it about the KO4 you didn't like Eddy?

Interested as it's one the options I'm considering.

TIA.

What was it about the KO4 you didn't like Eddy?

Interested as it's one the options I'm considering.

TIA.

I found the K04 to be quite slow to spool up in comparison to a K03S and not capable of the same boost levels. The K04 is based on the K03 so shares the smaller inlet and same outer housing, to acheive more airflow the internals are larger but this makes the turbo weaker. I know of 2 other golf owners with the K04/Jabba setup who are also dissapointed. The more popular option for older K03 cars is to fit the K03S and Jabba seem to be acheiving better figures with this setup.

I found the K04 to be quite slow to spool up in comparison to a K03S and not capable of the same boost levels. The K04 is based on the K03 so shares the smaller inlet and same outer housing, to acheive more airflow the internals are larger but this makes the turbo weaker. I know of 2 other golf owners with the K04/Jabba setup who are also dissapointed. The more popular option for older K03 cars is to fit the K03S and Jabba seem to be acheiving better figures with this setup.

Thanks for that.

The more popular option for older K03 cars is to fit the K03S and Jabba seem to be acheiving better figures with this setup.

Here we go again... Didn't we establish a few months ago that there's no such thing as a "K03S"?

Also, correct me if I'm wrong, but doesn't the R32 use a different 4WD system to the Skoda Haldex?

I might be completely wrong on both counts, so please let me know if I am!

there is officially no K03s but it is generally a name used for the latter versions of the k03

R32 does use haldex.

audis above the a3 use torsen...

Here we go again... Didn't we establish a few months ago that there's no such thing as a "K03S"?

Also' date=' correct me if I'm wrong, but doesn't the R32 use a different 4WD system to the Skoda Haldex?

I might be completely wrong on both counts, so please let me know if I am![/quote']

I'm fed up of explaining the difference between the K03 and K03S but they are different and both exist.

The 4x4, R32, TT, S3, V64M all use the haldex system and are basically the same platform. Audi A4, Passat 4M use the Torsen system.

Thanks ffelan! You beat me to it.

Here is Eddy's previous "explanation"...

HTH :cheers:

And here is the old Borg Warner question & answer explaining the differences (from a much older thread )

The Question

Can the K03 turbo (5303 988 0011 or 5303 988 0053) be directly replaced by the K03S (5303 988 0052 or 5303 988 0026) in terms of the intake and exhaust housing dimensions?

Is K03S the correct designation for the latter turbo mentioned above?

Obviously if a K03S was fitted an engine map could be changed to suit, but would a standard turbo map for the K03 be suitable for running a K03S on?

or would a loss of power be expected? and are the characteristics of the two

very similar?

I hope you can assist with the above and any information you could supply would be gratefully accepted.

The Answer

Dear Sir,

thank you for your interest in our products.

First of all, we don't produce any turbo that we call K03S. But I hope I can

answer your questions with the following explanations.

All the following turbos have the same installation dimensions and

thermodynamical performance. The differences are only in the actuator that

opens the turbine bypass valve:

K03-011 (5303 988 0011) 150 hp, 65 N actuator

K03-026 180 hp, 85 N actuator

K03-035 180 hp, 85 N actuator

K03-044 150 hp, 65 N actuator

K03-045 156 hp (Ibiza Cupra), 85 N actuator with 2 ports

K03-049 150 hp (Sharan/Alhambra), 65 N actuator

The 180 hp versions have an actuator with a higher opening force due to the

higher exhaust gas pressure (which is a consequence of the higher boost

pressure). Otherwise the valve would be pushed open by the exhaust gas

pressure.

The following turbos are a further development (since 2000) and have an

improved and slightly larger compressor while using the same turbine (still

with the same installation dimensions):

K03-052 180 hp, 85 N actuator

K03-053 150 hp, 85 N actuator

K03-058 150 hp/180 hp, 85 N actuator

Consequentially, putting a 180 hp turbo on a 150 hp engine will not bring

about any change in performance, but putting on a K03-052/053/058 instead of

the older versions will bring a slight improvement in engine efficiency.

Additionally, with re-mapping the ECU you can achieve about 215 hp without

danger of overspeeding the turbo. With the older turbos, 195 hp is the

limit.

With the K04 that's also commonly used (5304 950 0001) the power output

should not be more than 220 hp. That means, changing a K03-052/053/058

against a K04 does not make a lot of sense.

I hope that these details answer your questions. If you need more info, one

of our service distributors will be glad to help you. Their addresses are on

our website www.turbodriven.com.

Mit freundlichen Gr??en/Best regards,

BorgWarner Turbo Systems GmbH

My honest view?

It will kill the Haldex.

I didn't dream it after all....

Anyway, I don't know why no-ones bothered with a twin turbo upgrade. A low inertia unit for low-down and a higher output unit for the top end.... Or howabouts a supercharger for low down grunt then a BIG mofo turbo on top of that just like the Lancia S4....... I'll get me coat.

That's odd, to my knowledge the 'K03S' has a 1mm larger inlet hence the need to change the TIP when changing from a K03 to K03S.

Says 2mm on your mate's website who sells em - but 1mm radius = 2mm diameter so who's arguing

I guess maybe by "installation dimensions" they just meant the bolt spacings etc?

I wish i could find it... but i have a diff version of the answer also from borg warner....

the thing to note is a K04 is capable of moving more air than the k03 in any version.. however in relation to a std 1.8t the prob is the air does not flow fast enough... now if you happen to have a low resistance fmic with short pipes.. a gasflowed/ported head.. ported manifold milltek dp with sport cats and straight through back box the air has somewhere to go.... hence 220hp becomes less of a limit....

but bear in mind this is an extreme method to hit 300hp and a larger turbo less stressed is prob "better" for reliability.