electric cutouts on the s4. - Page 3

'Nova more S4 · 04-19-2006, 10:43 AM

I could see switching positions with the car at idle, but if he were to open them up at a certain RPM I'm not sure if that sudden change would have any negative impacts.

Snow Trooper= Sa'tin · 04-19-2006, 10:48 AM

M3=Lunnch · 04-19-2006, 10:50 AM

2.25" piece coming off straight downward?

What side cutouts? 2" or 2.5?

bertworks(dan@jhm) · 04-19-2006, 10:52 AM

electric cutouts that open up at a certain rpm to increase horsepower for the top end but are closed at low rpms for torque. but then i forgot how they dont have pimp ass turbos like we do

.

bertworks(dan@jhm) · 04-19-2006, 11:03 AM

M3=Lunnch · 04-19-2006, 11:12 AM

bertworks(dan@jhm) · 04-19-2006, 11:13 AM

i think maybe the only concern would be at a road course or auto-x event when they would be open for long periods of time, but even then im not too worried since my car will be moving the whole time.

Mark P · 04-19-2006, 11:19 AM

Here's my car with back to back runs with open and closed dumps (on racegas program):

http://ctny.audiworld.com/mark/s4/dyno/

http://ctny.audiworld.com/mark/s4/downpipes/dumps/

Flyboy · 04-19-2006, 11:20 AM

AJN334 · 04-19-2006, 11:24 AM

04-19-2006, 10:43 AM	#21
'Nova more S4 Member Account #: 47523 Join Date: Dec 2002 Posts: 7,181	agreed, my question was more about if there's a sudden pressure drop what that would do I could see switching positions with the car at idle, but if he were to open them up at a certain RPM I'm not sure if that sudden change would have any negative impacts. __________________ http://www.acna-nj.org

04-19-2006, 10:48 AM	#22
Snow Trooper= Sa'tin Junior Member Account #: 104363 Join Date: Feb 2006 Posts: 1,355	only positive effects

04-19-2006, 10:50 AM	#23
M3=Lunnch Junior Member Account #: 107345 Join Date: Apr 2006 Posts: 930	how did you make the piece that goes from the end of the DP to the cutout? Custom? 2.25" piece coming off straight downward? What side cutouts? 2" or 2.5? __________________ AudiWorld Classifieds Ads Vogtland Coilovers ASP DTS StartupRacing Pedals DTM Autohaus CF Hood OEM Audi Navigation Plus RNS-E 19mm Rear Sway Bar Custom Catback Exhaust Click Here for Ads!

04-19-2006, 10:52 AM	#24
bertworks(dan@jhm) Junior Member Account #: 99112 Join Date: Oct 2005 Posts: 1,140	i was just thinking of how some high end sports cars like the new z06 or the ferrari f-430 have electric cutouts that open up at a certain rpm to increase horsepower for the top end but are closed at low rpms for torque. but then i forgot how they dont have pimp ass turbos like we do . __________________ 2000 s4 jhm/vast stg gt 2001.5 a6 4.2(in work)

04-19-2006, 11:03 AM	#25
bertworks(dan@jhm) Junior Member Account #: 99112 Join Date: Oct 2005 Posts: 1,140	i just have gutted stock downpipes going into the 2.5" cutout pipe, then to my stock cats. __________________ 2000 s4 jhm/vast stg gt 2001.5 a6 4.2(in work)

04-19-2006, 11:12 AM	#26
M3=Lunnch Junior Member Account #: 107345 Join Date: Apr 2006 Posts: 930	so, 2.0" cutouts, 2.25" or 2.5"? :) TIA! __________________ AudiWorld Classifieds Ads Vogtland Coilovers ASP DTS StartupRacing Pedals DTM Autohaus CF Hood OEM Audi Navigation Plus RNS-E 19mm Rear Sway Bar Custom Catback Exhaust Click Here for Ads!

04-19-2006, 11:13 AM	#27
bertworks(dan@jhm) Junior Member Account #: 99112 Join Date: Oct 2005 Posts: 1,140	im not too worried about that since i dont keep them open for very long periods of time. i think maybe the only concern would be at a road course or auto-x event when they would be open for long periods of time, but even then im not too worried since my car will be moving the whole time. __________________ 2000 s4 jhm/vast stg gt 2001.5 a6 4.2(in work)

04-19-2006, 11:19 AM	#28
Mark P AudiWorld Expert Account #: 139 Join Date: Mar 2000 Posts: 27,942	very nice - glad to see someone add the electric control Here's my car with back to back runs with open and closed dumps (on racegas program): http://ctny.audiworld.com/mark/s4/dyno/ http://ctny.audiworld.com/mark/s4/downpipes/dumps/ __________________ Mark P Current: '04 Porsche 911 Turbo, Speed Yellow - website - 26k miles '02 Audi S4 Avant, Imola Yellow, APR Stg3 - website - 191k miles '01.5 VW Golf 4dr 1.8T, Satin Silver, GT28R - website - 203k miles '09 VW Tiguan 2.0T, Candy White - Hers Previous: '00 Audi A4 1.8T, Silver - Quattrobonium website

04-19-2006, 11:20 AM	#29
Flyboy AudiWorld Super User Account #: 4736 Join Date: Apr 2000 Posts: 3,504	Very nice. __________________ <url="http://www.myaudis4.com/index.htm"> <img]http://www.myaudis4.com/sig.gif</img></url> <url="http://www.motorists.org/">National Motorists Association</url>

04-19-2006, 11:24 AM	#30
AJN334 AudiWorld Super User Account #: 79299 Join Date: Aug 2004 Posts: 5,137	awesome, let us know your thoughts and impressions... __________________ 01.5 B5 S4 03 C5 RS6

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