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 S4 expected power with k04 hybrids View next topic
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Fullraceken
knowledgeable


Car: B5 s4 avant
Power: Rs6 hybrid
Torque: Big

Joined: 11 Sep 2013
Posts: 300

Location: Somerset

PostPosted: Tue Dec 31, 2013 10:42 am  Reply with quoteBack to top

Just finished ko4 ing my s4 and I was wondering if anybody had any ideas of what power it will run
Rick at unicorn will be mapping the car when he gets back off holiday
But here is the spec

K04 stage 1 hybrids built by Ben
Toyo sport tubular manis
Toyo sport catless down pipes
Toyo sport dual 2.5 inch system
Fidanza lwfw
Siemens 630cc
Bosch 044
Modded air box
Rs4 smic
Forge diverter valves

Any input would be great
Cheers ken

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colicabcadam
Experienced


Car: B5 RS4
Power: 679 bhp
Torque: 583 lbft

Joined: 11 Nov 2011
Posts: 3885


PostPosted: Tue Dec 31, 2013 10:44 am Reply with quoteBack to top

440 - remember, the torque plot will look much better and it will hold up top

i'd ditch the forge valves though

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Fullraceken
knowledgeable


Car: B5 s4 avant
Power: Rs6 hybrid
Torque: Big

Joined: 11 Sep 2013
Posts: 300

Location: Somerset

PostPosted: Tue Dec 31, 2013 10:49 am Reply with quoteBack to top

Any reason for getting rid of the forge valves I thought if anything these would be good units
Makes no odds to me they were on the car when I bought it
Just wondering are there unreliable ??

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frazz82
Experienced


Car: Audi S4

Joined: 22 Mar 2010
Posts: 3686

Location: Barrow-in-Furness

PostPosted: Tue Dec 31, 2013 10:51 am Reply with quoteBack to top

Are they recirculating d.v's.

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96 VR6 Golf (sold)
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Fullraceken
knowledgeable


Car: B5 s4 avant
Power: Rs6 hybrid
Torque: Big

Joined: 11 Sep 2013
Posts: 300

Location: Somerset

PostPosted: Tue Dec 31, 2013 10:53 am Reply with quoteBack to top

frazz82 wrote:
Are they recirculating d.v's.

Yes

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C J
Experienced


Car: RS4 B5
Power: 507
Torque: 741
Engine code: AZR

Joined: 16 Apr 2013
Posts: 3491

Location: Nottingham

PostPosted: Tue Dec 31, 2013 11:18 am Reply with quoteBack to top

I'd guess 450bhp.
For some reason people don't like forge valves. I've had a pair on my S4 for 3 years now and never had a problem! I pressure test them regular and never found anything wrong.

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ScottR
Veteran


Car: B5 S4

Joined: 22 Apr 2008
Posts: 8359


PostPosted: Tue Dec 31, 2013 11:20 am Reply with quoteBack to top

Do you have the stock S4 MAF?
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Fullraceken
knowledgeable


Car: B5 s4 avant
Power: Rs6 hybrid
Torque: Big

Joined: 11 Sep 2013
Posts: 300

Location: Somerset

PostPosted: Tue Dec 31, 2013 11:25 am Reply with quoteBack to top

ScottR wrote:
Do you have the stock S4 MAF?

Yes stock maf

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Fullraceken
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Car: B5 s4 avant
Power: Rs6 hybrid
Torque: Big

Joined: 11 Sep 2013
Posts: 300

Location: Somerset

PostPosted: Tue Dec 31, 2013 11:28 am Reply with quoteBack to top

I'd like to get a full rs intake system and a bi pipe kit but funds are low with Xmas and all

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Mocke
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Car: RS4b5
Power: 820
Torque: 1000

Joined: 31 Aug 2013
Posts: 685

Location: Sweden

PostPosted: Tue Dec 31, 2013 12:42 pm Reply with quoteBack to top

Running on petrol?
I would say 400-420bhp

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Fullraceken
knowledgeable


Car: B5 s4 avant
Power: Rs6 hybrid
Torque: Big

Joined: 11 Sep 2013
Posts: 300

Location: Somerset

PostPosted: Tue Dec 31, 2013 1:09 pm Reply with quoteBack to top

Really
I'm hoping for more than 420

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ScottR
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Car: B5 S4

Joined: 22 Apr 2008
Posts: 8359


PostPosted: Tue Dec 31, 2013 1:18 pm Reply with quoteBack to top

Rick got approx 450bhp out of mine on plain K04's, but I had RS4 MAF/y-pipe, APR Bipipe and water/meth. Other than those bits, I had the same spec as you.
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Fullraceken
knowledgeable


Car: B5 s4 avant
Power: Rs6 hybrid
Torque: Big

Joined: 11 Sep 2013
Posts: 300

Location: Somerset

PostPosted: Tue Dec 31, 2013 1:23 pm Reply with quoteBack to top

I'd be really happy with a solid 450 Scott
Lets hope the hybrids make up for the bipipe and rs intake lol
Unless u have these parts

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armageddon
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Car: S4 B5
Engine code: AZB

Joined: 14 Jul 2013
Posts: 666

Location: Portugal

PostPosted: Tue Dec 31, 2013 2:22 pm Reply with quoteBack to top

sock maf only read til 337g/sec = +/- 420ps

you can use stock maf and rs4 housing(if bosh maf)
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Fullraceken
knowledgeable


Car: B5 s4 avant
Power: Rs6 hybrid
Torque: Big

Joined: 11 Sep 2013
Posts: 300

Location: Somerset

PostPosted: Tue Dec 31, 2013 2:33 pm Reply with quoteBack to top

Is this right guys do I need an rs4 maf to get over 420

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