Go Back   AudiWorld Forums > Audi Models > Audi S4 / RS4 > RS4 (B7 Platform) Discussion
Sign in using an external account
Register Forgot Password?

Notices

RS4 (B7 Platform) Discussion Discussion forum for the B7 Audi RS4

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 11-22-2006, 02:40 PM   #1
Der Kimbo
AudiWorld Super User
Account #: 24630
 
Join Date: Aug 2001
Posts: 6,742
Default +20.4 whp and + 20.7 lb-ft

Nuff said.

Der Kimbo is offline   Reply With Quote
Old 11-22-2006, 02:56 PM   #2
craiglieberman
AudiWorld Senior Member
Account #: 111101
 
Join Date: Jul 2006
Posts: 618
Default Exhaust???

If so, perhaps we can allay somoe of the fears of our resident skeptics.
__________________
2007 Sprint Blue RS4
Nav/Sirius/Milltek Non-res CatBack/Stratmosphere SSK/KW Ver 3 Coilovers/H-Sport Sway Bars/K&N Panel Filter/Bel STi/M40 Blinders/Veil/DeFlapped
Coming Soon:
Uniden Scanner,Infinity BassLink,
PREVIOUS ADVENTURES:
2005 SL600 V12TT
2001 Diablo 6.0VT
2003 Porsche 996TT
1998 Supra TT 850hp
2002 UBER M3 Widebody
1998 Diablo SV
1999 Nissan Skyline GT-R V-Spec
1994 Toyota Supra (yes, the orange one from TF&TF)
1998 Nissan Maxima Supercharged
1996 Impala SS w/N20
1993 Mustang GT 347 Stroker, V-Trim Vortech 544hp
VIEW CRAIG'S CARS
craiglieberman is offline   Reply With Quote
Old 11-22-2006, 02:57 PM   #3
Der Kimbo
AudiWorld Super User
Account #: 24630
 
Join Date: Aug 2001
Posts: 6,742
Default Yup...the plot is, well, amazing.

But watch there will be skeptics saying I'm in on the "conspiracy".
Der Kimbo is offline   Reply With Quote
Old 11-22-2006, 02:59 PM   #4
ESFO
AudiWorld Super User
Account #: 71038
 
Join Date: Mar 2004
Posts: 7,738
Default Can you refresh the memories here? Is this res or non-res? And is this just a cat-back?

Very impressive, btw.
ESFO is offline   Reply With Quote
Old 11-22-2006, 03:02 PM   #5
schein609
Audiworld Junior Member
Account #: 104085
 
Join Date: Feb 2006
Posts: 20
Default Re: Yup...the plot is, well, amazing.

so was this just cat back or cat back/downpipes?
schein609 is offline   Reply With Quote
Old 11-22-2006, 03:12 PM   #6
Der Kimbo
AudiWorld Super User
Account #: 24630
 
Join Date: Aug 2001
Posts: 6,742
Default Non-Res, No valves, just cat-back as I want to document the gains separately for the DP's

Der Kimbo is offline   Reply With Quote
Old 11-22-2006, 03:23 PM   #7
Vijay
AudiWorld Super User
Account #: 561
 
Join Date: Mar 2000
Posts: 5,653
Default These numbers are really encouraging!!!!!.....more complete info now needed

If the gains were something like 5-6 hp, I would have said that is within the individual variation from engine to engine, or between successive dyno runs with the same car in the same state of tune. 20hp and 20lb-ft however is tough to try and "fake". We need at least a few more vehicles to be tested under similar conditions to solidify the claims.

Good initial showing, however.

We need to know:

1. Exact mods
2. Air temp/elevation/humidity of test conditons in modded car vs. stock car
3. Type of Dyno-I assume stock vs. modded was tested on the same dyno
4. # of runs performed in stock state vs. modded state
5. Fuel octane rating
6. Was the test done using one car pre and post mods, or two cars, one stock and one modded? If different, what were the miles on each car?

Like I said, your numbers indicate there is definitely some gain, but whether the full 20hp is readily reproducible is the question. Am I skepical?....Yes....but less so.
__________________
Precision tool: 2011 BMW ///M3
Sledgehammer: 2014 Audi S6
Vijay is offline   Reply With Quote
Old 11-22-2006, 03:26 PM   #8
ESFO
AudiWorld Super User
Account #: 71038
 
Join Date: Mar 2004
Posts: 7,738
Default Again, very impressive.

My only criticism is that it's being dynoed in different temperatures, humidity, barometric pressure and mileage (I'm assuming you're on the same dyno). So, your results won't be as accurate as they could (vs. dynoing on the same day, 1 mod at a time). But even with this, your results speak well for the increases to be found by just doing an exhaust.
ESFO is offline   Reply With Quote
Old 11-22-2006, 03:30 PM   #9
Der Kimbo
AudiWorld Super User
Account #: 24630
 
Join Date: Aug 2001
Posts: 6,742
Default Answers to your questions:

1) Just the Cat-Back
2) 72 degrees, 68% Humidity, 8 feet MSL (Climate Controlled Dyno Room so the conditions are identical each time)
3) Dynojet
4) 3 for each
5) 93 (Exxon - Mobil)
6) My car both times. 1587 for the baseline - 1701 for today.
Der Kimbo is offline   Reply With Quote
Old 11-22-2006, 03:32 PM   #10
Der Kimbo
AudiWorld Super User
Account #: 24630
 
Join Date: Aug 2001
Posts: 6,742
Default See above regarding your critisims...the only variable is mileage.

The car needs time for the lambda return, in this case I used the car for 7 hours and just over 100 miles in between.
Der Kimbo is offline   Reply With Quote
Old 11-22-2006, 03:32 PM
AudiWorld
Audi R8




Paid Advertisement
 
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -8. The time now is 12:34 PM.


Copyright 2014 AudiWorld.com Audi Enthusiast Community

Personal Contacts