TurboBerserker

iTrader: (1)

I understand the concept of twins. I believe that biturbo means something like a T3/T4 set up.

My buddy with an Audi keeps saying that his "biturbo" is sequential, but everything I've read leads me to believe that Audi's biturbo is just a twin kit...

JZ 97 SS 1500

iTrader: (2)

Which model Audi is it??

Last sequential setup I saw was the FD RX7 and Supra TT. And contrary to popular belief the supra did not use one small turbo and then a larger second. Everyone always says that....lol

JZ 97 SS 1500

iTrader: (2)

BTW, if its a V designed motor you can't run a sequential setup with one turbo running of one bank. It would have to be an inline setup or a very complicated arrangement in which the turbos are effectively seriesed.

Jose

TurboBerserker

iTrader: (1)

It's that special S4 model... I forget the name but it has the fancy little badge and a v6 -- makes about 400hp according to him.


Hehe, I was going to bring up the Supra TT with the little and big turbo LOL. I coulda sworn the salesman told me that!

So to clarify my thinking... sequential turbo means one compressor feeds the next, right? Both have seperate exhaust side feeds?

JZ 97 SS 1500

iTrader: (2)

Essentially yes, the sequential setup is just air regulated to the turbines. On the Supra the first turbo is getting all the exhaust gases till around 4200rpms, then the secondary is opened an the exhaust gases then hit the 2nd turbo as well. BTW, both Supra turbos are CT-12's. They would be great for a small bike or 4 wheeler....

Jose

JZ 97 SS 1500

iTrader: (2)

The S4 is what I posted above. Just a standard V6 with 2 small twin turbos for quick spool. The turbos run under normal exhaust gas operation, no tricky sequential systems used.

MECHAM

iTrader: (4)

I own an S4 - its my daily driver.



like JZ 97 SS 1500 said.... V6 2.7L Twin Turbo K03's.

small turbos that have full boost before 3k rpm and carry that boost all the way to redline 7.5k with minor taper.

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TurboBerserker

iTrader: (1)

Thanks! That's what I thought.

strokedls1

iTrader: (1)

If you do a chip CIA kit and exhaust those things move out. My friends went so quick that the clutch and trans died and the car went away.

F8L Z71

Bad *** lil cars!

My buddy has one and tried to chip it but within a week he was at the dealer. Something about the turbos and the chip stayed out after that. I believe he has been through a couple clutches and a tranny once. LOL

qqwqeqwrqwqtq

S4 is my daily driver too.

Stock is 250hp. Turbos are tiny. When I did the downpipes, I could see the exhaust turbine wheel is about the size of a quarter

TurboBerserker

iTrader: (1)

My buddy is chipped and has the big exhaust kit. He keeps talking about the K04 upgrades but is on a pretty short leash.

Isn't there a "sport" verison of the S4? His looks different in the back than the ones above -- it has a fancy shmancy badge with red blue and white on it I think.

MECHAM

iTrader: (4)

in Germany..there is the RS4
maximum output of 420 bhp, the V8 revs up to a speed of 8250 rpm


we do have the RS6 here tho..
4.2L V-8 450HP


the newer 2003+ S4's are V8

ferariguy3

The RS4 of that era has twin KO4s and produces about 380HP...the only problem is, it only comes in a wagon...But that sucker moves!!!!

got_hp?

friend of mine just got an 05 with the turbo 4banger i think.............whats a good website for him to pick out an exhaust and chip? which exhaust sounds the best (ie, non ricy)

mi021le

uve seen the m5 and the audi wagon race on the roads somwere in europe. thats a rs4. the new rs4 is a heads and cam(s) s4, thats and one in the picture. but the old was turbo'd. (kkk k04, instead of kkk k03's) and ya they do move. the rs6 in the pick isnt twinturbo. thats the new one. thats going to have the same motor as the lambo. 500 hp out of a v-12. but the old rs6's have a 4.2 lt with two turbos. i know 4 people that had s4's and moded them. 3 have been totaled cuz they are crazy cars. lol. with the awd u can go preatty fast before they loose traction. and the gforces at that speed. i loved mine old one.