A4 1.8t awd 2003 performance upgrade
 

Hi, I need my audi to be more powerful. What should I do?
It's a 5spd 1.8T quattro 2003.
thanks

Re: A4 1.8t awd 2003 performance upgrade
 

unitronic stage 1 will make u smile for a bit, than when u get fed up keep upgrading stage

Re: A4 1.8t awd 2003 performance upgrade
 

Thanks,
One last question tough,
Isn't this bad for the vehicle?
Mine is completely stock, and I plan to take great care of it,
So are there any bad effects of using an unitronic stage 1 ?
If not it's really a good thing, with their 200hp claimed upgrade!

Re: A4 1.8t awd 2003 performance upgrade
 

Stage 1 u could stay bone stock with no side effects what so ever with stage 1 I'm pushing 210hp n 240tq . Trust me it's well worth the 500$ , than once u get fed up u pay 100$ to upgrade stage 1+ , that's when u have to start putting 94 instead of 91 n it's very recommended to add an upgraded diverter valve or splitter valve from forge is tip notch. Lol and eventually when u get fe up of that u upgrade stage 2 for another 100$ , add an exhaust n injectors n ur flying;), but stage 1 full pin stock from unitronic u could rip it all u want ur all good.. But obviously the more u rip it the more u wear n tear, n ur also much more gas efficient with the chip

Re: A4 1.8t awd 2003 performance upgrade
 

Thanks a lot, it's now sure I'm getting it
Guess I'll have reached stage 2+ by a year now!!

Re: A4 1.8t awd 2003 performance upgrade
 

Do you recommend the Unitronic tuning over APR??

I'm debating between the 2, and if anyone has reasons for preference of 1 over the other I'd love to hear it.

Re: A4 1.8t awd 2003 performance upgrade
 

It depends what YOU want and what YOU expect
My car is Bone stock and I am considering a Stage 1 APR just for this extra ommph and call it the day.
APR's advantage is that is is a very reliable and soft sofware/program vs. more aggressive ones like Unitronic, GIAC...etc
The more agressive you go the more stress you are putting on your stock turbo along with additionnal wear and tear on other components.
I see so many wanting to reach 300hp+ and never consider stopping power! Stage 1 does not require any mods not even diverter valve as confirmed by my local APR shop. You could always replace the stock one with Forge or any other brand to accomodate the additional boost.
I simply replaced my rotors with Zimmerman and Akebono Ceramic pads from Auto Parts Way Canada and paid labor to install and I do feel a difference.
If you track your car and add considerable mods then you have no other alternative than serious upgrade...It never ends!

It would also help if you know how far you plan to go in terms of upgrades and mods

Re: A4 1.8t awd 2003 performance upgrade
 

For me, its my daily driver, so I'm just looking for a little extra fun/performance. I've already installed the APR Stealth cat-back exhaust, and its a great system both performance wise and build quality -- so APR seems like a pretty decent choice in my eyes.

Unitronic's stage 1 kit is a little cheaper, and delivers about the same numbers. Aside from the "switchability" of APR's software the two are very similar. I was just fishing to see if there were any big believers in one over, and what the reasoning was behind it.

Thanks for the info on the brakes though, as those are next up!

Re: A4 1.8t awd 2003 performance upgrade
 

Glad I can help!
Trust me I did my exhaustive research on this matter...APR would be my choice hands down. My car is also my daily driver and I put less than 10k/year. However when I have my baby dayghter and wife I can sometimes feel and would have appreciated some additional Toque/HP.
My local shop who is an APR dealer as well and been working on Audi for 30+ years told me that our cars come ''detuned'' vs. European specs. I am not too sure about that but I would agree that remapping the ECU with such a ''soft'' software would be great and mind you you would also save on gas when cruising on the highway. So regadless of the tune you will save money as long as you do not Push it and when you do it would be ready!

In your case I would simply go for APR Stage 1+ with TT injectors and then upgrade your brakes.

Re: A4 1.8t awd 2003 performance upgrade
 

Bro u seriouse right now or ur jkin apr is full of ****.. U want stress on ur engine u get apr u want everything top notch u get unitronic or revo... Apr gives more power therefore gives more strain on the engine u wanna be smart u listen to me u wanna be a clown slap on ur apr come see me next year when ur changing ur block

Re: A4 1.8t awd 2003 performance upgrade
 

Don't you just love forums :p
I mean anyone with an opinion becomes hard facts...I have no idea where you get your infos!
You are entitled to your opinion and that is just that regardless if you are a fanboy of any tune, as I am very happy that you love yours

Facts however are facts and bashing any tune especially APR who is one of the most respected firms and being one of the least aggressive ones shows how pointless your input is.
ANY ECU chip remaping puts unecessary stress on the engine and its components that is why you have to be careful.
I will opt for APR like thousands already have for years you have chosen Unitorics or Revo...etc like so many as well, it comes down to choices.
Do some readings first before jumping to erronated conclusions my friend :rolleyes:

Re: A4 1.8t awd 2003 performance upgrade
 

Your a fag and apr is full of **** compared to unitronic u go gets facts chin

Re: A4 1.8t awd 2003 performance upgrade
 

lol
Go seek mental help, i guess you are a teenager who cannot believe himself driving an old Awwwwdi...
Back your stories and fantasies and stop trying to bash and post missinformations. I hope admin would kick you out.

You do NOT EVEN back your facts I feel sorry for you since your own ignorance is bliss i guess!

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Original poster:
If you never plan on modding your car beyond a chip-get whatever dealer is closest to you/provides the best service.
that being said, if you fall into one of these categories, think carefully bout your decision:

1.) you plan on going big turbo EVER, go with either revo or unitronic, preferrably uni.
2.) you plan on going no further than a big injector file and you will keep a HFC or stock cat, go revo.
3.) you plan on going no further than a big injector file and will use a test pipe/no cat, go APR.
4.) you plan on doing a K04/380cc injectors and nothing more, go Revo.
5.) you plan on going K04 with ALL supporting mods, go uni/giac-giac for more power, uni for upgradability.

Re: A4 1.8t awd 2003 performance upgrade
 

UNI stage1 = 205hp 230 torque 450$ Performance Software - 2003-2005 Audi A4 B6 1.8T 163HP
APR stage1 = 209 hp 236 torque 450$ special instead of 500$ APR Audi A4 B6 1.8T - APR ECU Upgrade

Both seem very close on perfs and price.

Re: A4 1.8t awd 2003 performance upgrade
 

Agree with its about personal choice, I went with APR and im Very pleased, to be honest im going to go 1+ soon , Also i do not know if other ECU, such as Uni or Revo, offer this but you get 4 settings with other neat stuff like anti theft and such with APR :P

Either way, up to you

Re: A4 1.8t awd 2003 performance upgrade
 

What do you think of the infamous RP k-04? On a test pipe, forge diverter, tt injector maybe a full exhaust? That's what I'd be considering upon reading these info. But, I heard uni (and I guess apr too since they deliver almost the same stage 1 performance) is about 16,5 psi which is a lot for a little k-03, isn't it?

Re: A4 1.8t awd 2003 performance upgrade
 

UNI Stage 1+ = 215hp and 245LB-TQ 500$
UNI Stage 2 = 225HP and 255LB-TQ 550$
APR Stage 1+ = 235hp and 275LB-TQ 450$ special instead of 500$
Same links as my previous msg above.

I'm surprised by how similiar Uni's Stg1 and Stg1+ are, only 10hp more. Quite pointless? Or is APR really pushing it far too much for their 1+ ?