im finally going to go at this.. attempt to throw this thread back on it's tracks

im not sure where you are looking at as far as this 320hp stat. but i have that exact same kit on my car. i have never dyno'd, but other A4's with this setup have put down more than 300hp to the wheels, all 4 of them. that equates to over 400hp at the crank..

if you go with that kit, all else you will need is software w/injectors that are designed for that software(give me your year and i can tell you what options you have for this), an intercooler upgrade(either FMIC or an upgraded SMIC), the rest of the exhaust, and that is pretty much your bare essentials.. if you really want to harness that power you're going to have to upgrade your clutch. also for this type of power you're going to want suspension and brake work done. this will give you the most out of this setup and keep you a bit more safe..

of coarse your own turbo setup is possible. not sure why it wouldn't be. pretty much any garrett turbo ranging from the GT20 to the GT42 has been bolted up to the 1.8t.

and to answer your last questions. a GT28RS at 22+psi(100+octane or Meth ijection recomended for this and higher PSI levels) will make 400hp at the crank.. and 400hp is about the limit you really want to keep yourself at for the stock bottom end. and this is with a great tune.. any more power and you'll need to upgrade your rods

 

actually there are people putting out 2000+hp out of engines witht hte same block as mine, dont ask me why youd want that kinda power.hell gm just realeased a new block that is based of the iron 5.3 and 6.0 engine that is factory rated to withstand 2500 hp. search "fairmont" or "5.3 turbo" in youtube. those guys are running around 700 hp on stock internals at umm i think like 10 PSI maybe more, i really cant recall. the thing that make the 5.3l so great is you alway have toque. you dont need to wait for the turbo. also you can easly get 25+ mpg (hw of corse). i really dont need more power right nowand i like my fuel consumption but who knows what may call later. the hp im pushing is just the begining of what that engine is capable of. think of it this way, i have hundereds of eengines to choose from: vg, rb25det, rb26dett, sr20...all of which are capable of 500+ hp and the list goes on, but i choose the lm7 engine cause its that damn good!

opps sorry i took so long to write this up that you reposted. didnt mean to get the trhread off again.

 

wow, you guys are comparing apples and oranges....you should just call it a day.

 

too much, why not take that money sell ur car buy a S4

 

cuz u can make an a4 faster then an s4 for cheaper.

 

I dont get that response. A 400hp and even 400whp car is still very streetable from the 1.8t. With boost kicking in at ~4k and the power holding till 7-7.5k (which the stock head can do), i dont see what the problem is. You get great power and still are able to get ~30mpg when not in boost. The cost of upgrades, gas, maintence, and insurance on a s4 will be SO much higher

 

but that is only true in some ways.. you can hit close to 400hp with just a chip, exhaust, and gutting your downpipes. that is only about $1.5k in mods if you do it right.. to get 400hp out of an A4 you're going to need an entire BT setup. expect to pay at LEAST $3000 dollars to get that up and running. and this isn't including a clutch that will go on you soon(the S4's stock clutch will hold)

of coarse insurance will be a little higher, and some parts will be more expensive. but it's not as bad as everyone thinks..

 

Cincy, I like the excel charts, now definatelymakes me want the GT28RS for that horsepower holding out more at higher rpms. What was the tirm on that turbo?
nevermind, I mean the 2871R...

 

the bigger you go, the a4 is the way to go as far as costs wise. if your going for 500hp or something, then the a4 just needs bt and rods. for an s4 to hit that is gonna be a lot more expensive.

and another point to add to the arguement, an s4 costs a lot more then a a4

 

not really. cause have you ever ridin' in a 500hp A4? i haven't, but if only rods are done, it's going to be a relatively short powerband. you're going to need more than just rods to really take advantage of any turbo that will produce that much power. sure a 3076r will work on a stock head, 1.8t block w/ only rods upgraded. but to really unleash that beast, you will need cams, exhaust valves, and valve springs/retainers. then you will be able to rev up to 8500rpms with no worries and you will have a better powerband for that turbo..

but also, have you ridin' in a 500hp 2.7t S4? cause i have ridin' in a few now. and OMG, so much of a different feeling. the powerband is long, reall long, and it holds strong in any of the 6 gears..

and they're not really that much more. but i would say building a 500hp A4 will cost you somewhere around the same amount of money as a 500hp S4 would be to build(about 10k on average) but if i was to choose which one to drive everyday, you bet your *** it would be the S4