S3 225 Remap?

[simon20vt]

Nick, after being away from the VAG for a while, I'm thinking of investing in an Audi S3 225.

a) How much would you expect to get from a remap as a standard untouched factory car?

b) How much would you get from smaller mods such as CAI, uprated TIP, decat?

c) What modifications would you recommend to get best results out of the S3 without upgrading the turbo and internals?

d) I saw in one of your other posts about a custom job you did on a KO4 turbo and you saw results of about 300bhp - how much £££?

e) How good is the 4wd system as advantage over a KO4 fwd cheaper Seat Leon Cupra R that also has 225bhp?


Secondly, if i dont go down the route of an S3, i will be looking at a 530d m sport E39 bmw, be keeping my saxo and putting it on track..

What power could you get out of a map on the 530d BMW engine, have you done one of these before?

Sorry about all the questions but i am unsure of which route to go down at the moment, and I am exploring all options.

Thanks very much for your help,

Si

[RTechUK]

Hello 

Below is a graph from a S3 K04 and an R-Tech remap.

Graph 1 is stock with just remap
Graph 2 is with 3" turbo in take pipe.



Haldex is fun... but Much much less power being layed down at the wheels, but then with the LCR in thwe wet its a nightmare to get the mapped power down with out spinning up.

300bhp was from a Hybrid turbo but the issues are getting a good hybrid unit. They are hybrid due to being made of many bits laying around, some hydrid turbo builders dont get the exhuast flow right, so the make huge boost but dont flow at the top end, or they have surge point low down which can be fatal to an engine.. (the one we mapped have flow issues at the top end and would not make the quoted 330bhp. 

Search R-Tech K04 hybrid on you tube  http://www.youtube.com/watch?v=D2o7R8tkoVY&feature=related

To help make your mind up.... Happy reading!!! http://www.seatcupra.net/forums/showthread.php?t=298188  ( it took part in this thread via another user name..lol)

  IMHO stay away from hybrid ko4 turbos it will cost you £1000s in the long run.


The 530d will push another 35bhp 50lbft with ease..

[simon20vt]

So, in short which would be quicker and have larger power at the wheels after taking into account transmission loss, the 4wd S3 mapped with a tip, decat, full exhaust... or the fwd LCR with same mods? would either of these be as fast, or marginally quicker than a KO4-001 golf?

and, if you were to put launch control on both of them, what sort of 0-60 times could you expect from each?

would it be better to have the 4wd haldex compared to the fwd only?

What modifications would you recommend to get best results out of the S3 without upgrading the turbo and internals?

and what is the KO4 lag like compared to a KO3s, and how long does it pull for, before boost tails off rpm wise?

What would you do if in my position - ignore the fact the LCR can't put power down in the wet, if your choice was a 530d, S3 4wd, or LCR fwd, and why?

Cheers


soooo many questions  LOL! sorry!

[emery1990]

A guy had a sorted k03s fwd a3, he took it to the ring with some s3's mapped etc on the straights he would pass them. So a lcr running same bhp as a s3, itll eat it on the straights once it's got it's power down, but tbh i'd rather have grip. They arn't exactly slow anyway lol. I'd get one with sorted suspension already as this cost over 2k, and it needs it! And I'd also get an uprated haldex controller, which I think sends more power to the rear and gets rid of the haldex kicking back in when your about to go sideways, happened to me and it's not very safe lol! I had a a3 quattro, so same apart from the power difference and a bit lighter.

So basically lcr will be quicker in straight lines and in the dry, bit of moisture and on bends a sorted s3 is good. ess three said his one was as good round corners as his porche!

[tom-gardiner]

Why does the max torque drop from 259lbft @ 4240rpm down to 253lbft @ 3989rpm with the 3" turbo intake pipe?

[RTechUK]

Why does the max torque drop from 259lbft @ 4240rpm down to 253lbft @ 3989rpm with the 3" turbo intake pipe?

Turbo inlet speeds, the oem and forge pipes can speed the slower air flow due to how the tip reduces towards the compressor housing, creating a vortex of some kind.  Well thats my take on it from seeing the results from a Unique one off SFS ko4 tip we are testing for SFS during last week and the next 2 weeks coming.

[tom-gardiner]

Why does the max torque drop from 259lbft @ 4240rpm down to 253lbft @ 3989rpm with the 3" turbo intake pipe?

Turbo inlet speeds, the oem and forge pipes can speed the slower air flow due to how the tip reduces towards the compressor housing, creating a vortex of some kind.  Well thats my take on it from seeing the results from a Unique one off SFS ko4 tip we are testing for SFS during last week and the next 2 weeks coming.

Cleared that one up, thanks buddy to be honest i dont think the difference is to much to be bothered about

[F17BAD]

something not right about them graphs, why is the info chopped off on the far right?

dont agree with the figures either, seems all wrong to me

[Adam]

something not right about them graphs, why is the info chopped off on the far right?

dont agree with the figures either, seems all wrong to me

What info is chopped off?

[Wazzzer]

Think he must be reading it on a phone lol

That SFS hose you are testing is a monstor!