k03 to a k04

[skinz]

hi peeps, well this is my first audi and im loving my new ride, but my turbo is on its way out so im thinking of up-grading the turbo to a k04, i know i need to change the injectors but i dont know what sort of injectors i need to look for and is there anything else i need to change, i've had my car chipped so far
cheers peeps skinz

[Papa_Dios]

I think that going to a K04 is kind of pointless being that the amount of power is above and beyond that of a K03. Depending on how much you have to spend I would look into the Frankenturbo setup I've seen some pretty legit #'s.

[beardman]

Search around to gather some info as this has been discussed to no end, but:

You can just drop in a k04 with zero additional changes, it won't yield and additional power, but it can be done.

You mention that you are already chipped so there is probably an upgrade path for the chip you already have. This may be your least expensive option as spouses to switching to a different software programmer.

You don't have to install new injectors, but again that is dependent upon what chip you have.

The first thing you should decide on is a budget. If you are planning on spending some coin you are probably better off going with a bigger setup, search elim kits.

There is a huge amount of information out there, good luck.

[skinz]

thanks for the advise, i didn't want to go over the top on the spending, i need a new turbo an thought i might try an get a bit more power with the k04 turbo, the chip was done by the person who had it before me, this is my first thing to up-grade on the car an this is my first time working with a turbo engine so this is all new to me, is this a American sever, im from the uk

[murdered APR a4]

there are people on here from all over your cool

[M-Hood]

thanks for the advise, i didn't want to go over the top on the spending, i need a new turbo an thought i might try an get a bit more power with the k04 turbo, the chip was done by the person who had it before me, this is my first thing to up-grade on the car an this is my first time working with a turbo engine so this is all new to me, is this a American sever, im from the uk

Even if you put just the K04-15 in you wont see much gains at all. The gains wont happen till you go with a K04 tune. You also cant just throw in a set of larger injectors if the tune you have isn't designed for them.

[skinz]

am i better of just sticking to a k03 then, seen a couple of threads on here where peeps have took there turbos of cause of a clicking sound and some1 said its the wastegate flapper, mine is making the same noise so i just want to know what is best to do.... repair or get a new k03 or k04, like i said im new to working with turbos so dont go to tech plz lol

[skinz]

in the uk i can get a k03 and k04 around the same price, but some1 told me that i will get loads of turbo lag if i put the k04 on the 1.8T engine, he said the k04 is better on a 2.2 engine

[skinz]

bet i cant tell what turbo is on mine unless i take it off

[biketsai]

in the uk i can get a k03 and k04 around the same price, but some told me that i will get loads of turbo lag if i put the k04 on the 1.8T engine, he said the k04 is better on a 2.2 engine

Go tell that guy that he is CRAZY, K04 is seriously just about as good as it gets for minimal turbo lag.

[Seerlah]

If it's a wastegate issue, look into seeing if that would be an easy $200 max fix first. That is what my issue was. And I am one of those guys who say the k04-15 isn't worth it's cost for the gains involved, since there is the Frankenturbo option. And when wanting to run it effecient, the supporting mods would be the same as the Frankenturbo (ie tune with required injectors, MAF, and fpr, upgraded tip, high flow exhaust manifold, and upgraded silicone tip), with less gain.

in the uk i can get a k03 and k04 around the same price, but some told me that i will get loads of turbo lag if i put the k04 on the 1.8T engine, he said the k04 is better on a 2.2 engine

With 2.2L of displacement, people would be looking into t4 flange turbo setups (500chp minimum on pump gas) on the 1.8t platform.

[skinz]

see i can get a new k03 for just under £200 and a k04 for just over £200 of a friend, seerlah can u explain some of them upgrades to me plz, like MAF, FPR, upgrade tips an silcone tips, i'll have a look at the frankenturbo, i take it these are better than the k04, i dont know what my bhp is with the chip but from standed(150bhp) what gain would i get with these other turbos

[Seerlah]

Frankenturbo can see roughly 230whp with tune, while a k04-15 will see roughly 250chp with tune (both with supporting mods). The MAF, FPR, and Injectors are all tune dependant. The reinforced silicone turbo inlet pipe (tip) is what most consider a must when your turbo draws in more air than the stock rubber tip can really handle. When the turbo's compressor housing draws in air, it will cause the stock tip to collapse under the added intake pressure. Inevitably, it will decrease the effeciency of air intake to your turbocharger because your compressor housing will basically be choked of fresh air intake from the stock rubber turbo inlet being compressed under more pressure than it was designed for (stock boost). An upgraded silicone turbo inlet won't compress under these conditions.

[M-Hood]

in the uk i can get a k03 and k04 around the same price, but some1 told me that i will get loads of turbo lag if i put the k04 on the 1.8T engine, he said the k04 is better on a 2.2 engine

That person most likely had no clue what he was talking about. The K03 and K04 are pretty much exactly the same size, even use the same housings.

I ran a K04 with my built 2 liter, the thing pretty much made 15psi just revving the engine in neutral. lol

[kingDL]

see i can get a new k03 for just under £200 and a k04 for just over £200 of a friend, seerlah can u explain some of them upgrades to me plz, like MAF, FPR, upgrade tips an silcone tips, i'll have a look at the frankenturbo, i take it these are better than the k04, i dont know what my bhp is with the chip but from standed(150bhp) what gain would i get with these other turbos

No way with those prices it can be a genuine KKK turbo. Search around for people using cheap copies, you will find lots of disappointed users. A genuine K04-015 will cost you like £800-1100. And software, wich you will need to replace to have any use of K04, will cost you £300-600. If you want to replace the injectors also count on £300 for those. And if you do that you should also replace the intercooler, £500-1000 for a good one, also a race cat and thick DP £500-1000, and ofcourse a sport exhaust if you dont have that already, ca £500.

And this is just the parts cost. Not really worth the 240-250 engine hp you will get as a maximum with a K04. Better to go with a Garret Eliminator Series, like the GT28RS, wich you can easily tune to 300-350 hp.

And yeah ofcourse you will need a better clutch, count on £600 to £1000 for that. I have a K04 with standard injectors, it has OEM clutch but it can barely handle the torque.

[kingDL]

One more thing...you didnt specify what year your car is. If its a 95 or 96 you will have trouble like me, the ECU of those years are not tuning-friendly.

[skinz]

i do have a 96, so sounds like im better of putting another k03 back on unless i want to spend a lot of £££££, but if i wanted i could put a k04 strait on but wouldn't get any power gain until i get it tuned and add a couple of other bits, if i stick with the k03 but change a couple things like the manifold i would get a little bit more power, what else could i do

[Doug@FrankenTurbo]

If you're open to sticking with a K03, there are two levels up available from what you have now. The K03-005 on your car is a dud. But you can find the K03-29 that appeared a bit later, and the K03-073 cam a little later than that. If you can find a -073 you can run it with no change to software or chip it and get a solid improvement. The -073 came stock on the 190bhp variants seen over there.

[bmarshall]

Check out www.audi-sport.net. Its a UK forum. I have a 96 A4 too, ive done a lot of research. There are places in the UK that can do K04 software for our 96 ecus.

[kingDL]

Check out www.audi-sport.net. Its a UK forum. I have a 96 A4 too, ive done a lot of research. There are places in the UK that can do K04 software for our 96 ecus.

You got any more links to share? Or maybe to a specific thread in that forum? Im intrested too.

[bmarshall]

Just get a login ID and post a thread, those guys will help you out.