Are exhaust manifolds worth it when going stage 3?

ExpStang · 12-20-2005, 06:51 PM

I was thinking about the vast ones or ASP's manifolds. What are the real gains and does it equal the extra cost?

Dr. Jekyll · 12-20-2005, 06:55 PM

If you really want to eek the most performance out of them, have vast port them a little and maybe have them coated. Anymore than that is a waste of money IMO. Although those ASP ones look real nice

Hal_TT::CBP · 12-20-2005, 06:55 PM

Mike2kS4 · 12-20-2005, 07:08 PM

I'd say the best advantage of them is a slightly quicker spool due to superior management of the exhaust pulses.

I seriously doubt they make any more peak power over stockers with the head ports cleaned up.

EdyJun · 12-20-2005, 07:12 PM

The amount of performance gained by keeping the heat with in the exhaust header and turbo is not much. I think the biggest benefit would be the lower temp under the hood.

Edy

Mark P · 12-20-2005, 07:13 PM

and the crank pin. Could you bring that stuff with you to work and I'll stop over on Friday or Monday (are you working both days?) and grab them.

Mike2kS4 · 12-20-2005, 07:18 PM

LaserAvantS4 · 12-20-2005, 07:49 PM

Chuck-S4 · 12-20-2005, 08:20 PM

LaserAvantS4 · 12-20-2005, 10:27 PM

them

12-20-2005, 06:51 PM	#1
ExpStang AudiWorld Senior Member Garage is empty, add now Join Date: Aug 2003 Posts: 840	Are exhaust manifolds worth it when going stage 3? I was thinking about the vast ones or ASP's manifolds. What are the real gains and does it equal the extra cost? __________________

12-20-2005, 06:55 PM	#2
Dr. Jekyll AudiWorld Super User Garage is empty, add now Join Date: May 2004 Posts: 7,719	Eh, the stockers seem to work fine for most people. If you really want to eek the most performance out of them, have vast port them a little and maybe have them coated. Anymore than that is a waste of money IMO. Although those ASP ones look real nice __________________

12-20-2005, 06:55 PM	#3
Hal_TT::CBP AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 9,754	$150 or $180 per HP, depending on where you shop. __________________ Hal. My German car history... '11 S4 Premium +, 6sp, Ti, Nappa, Carbon, SportDiff, B/O, Nav/Park current Audi '01.5 S4 Shizzle #3 ... purchased 09/03/10, Nogaro/Blue Sport '10 Dodge DS Gen4 Ram 1500(designed by Germans lol) '03 TT 225QC ... sold 09/23/10, Ocean/Sea '01.5 S4 APR Stg3 ... sold 09/10/08, Silver/Silver '01.5 S4 Ordered, Silver/Silver, Lemoned 5mos after purchase '00 996 Cab, Blk/Blk on Silver '98.5 A4 QMS Avant, Santorin/Ecru with blue trim '96 Jetta GLX VR6 '95 Jetta GLX VR6 '92 E36 Coupe - Lemoned 4mos after purchase

12-20-2005, 07:08 PM	#4
Mike2kS4 AudiWorld Super User Garage is empty, add now Join Date: Jun 2002 Posts: 12,096	K04 housings are too small to take advantage of them flow-wise... I'd say the best advantage of them is a slightly quicker spool due to superior management of the exhaust pulses. I seriously doubt they make any more peak power over stockers with the head ports cleaned up. __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

12-20-2005, 07:12 PM	#5
EdyJun AudiWorld Super User Garage is empty, add now Join Date: Dec 2002 Posts: 2,719	Stock Exhaust w/ port & polish and coated is the most I would do. The amount of performance gained by keeping the heat with in the exhaust header and turbo is not much. I think the biggest benefit would be the lower temp under the hood. Edy __________________ 2000 Audi S4 STG 3 FATS = 3.66 w/ 91 oct AIM: EdyJun 11 September 2001 In their honor. In their memory. <font color="red">---------------------------------------------------------- <u><big> <a href="http://homepage.mac.com/edyjun1/S4/index.htm">EdyJun's S4 Directory (FAQ, DIY, Info, Tips and Help) </a> </big> </u>---------------------------------------------------------- </font>

12-20-2005, 07:13 PM	#6
Mark P AudiWorld Expert Garage is empty, add now Join Date: Mar 2000 Posts: 27,943	new sig I see :o) One of these days I need to stop by to grab the cam bar, head tool, etc... and the crank pin. Could you bring that stuff with you to work and I'll stop over on Friday or Monday (are you working both days?) and grab them. __________________ Mark P Current: '08 Audi A3 2.0T DSG, S-line - Ibis White - website - 25k miles '04 Porsche 911 Turbo, Speed Yellow - website - 29k miles '01.5 VW Golf 4dr 1.8T, Satin Silver, APR Stg3 - website - 203k miles '09 VW Tiguan 2.0T, Candy White - Hers Previous: '02 Audi S4 Avant, Imola Yellow, APR Stg3 - website - 191k miles '00 Audi A4 1.8T, Silver - Quattrobonium website

12-20-2005, 07:18 PM	#7
Mike2kS4 AudiWorld Super User Garage is empty, add now Join Date: Jun 2002 Posts: 12,096	Stock manifolds are superior in heat retention as well. Double walled>Single side ceramic coat __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

12-20-2005, 07:49 PM	#8
LaserAvantS4 AudiWorld Super User Garage is empty, add now Join Date: Nov 2003 Posts: 4,832	stage 3 already Chris? hot sig too :) __________________ LaserAvantS4 FOR SALE SPORTEC stuff Zeitronix ZT2 wideband kit with boost sensor and LCD display Stock M Box "life is too short to drive boring cars" S4mig@PEBtuning . 2001 LaserAvantS4 stg3

12-20-2005, 08:20 PM	#9
Chuck-S4 AudiWorld Senior Member Garage is empty, add now Join Date: Sep 2002 Posts: 1,690	I would say yes only if you plan a Stage 3+ setup... Don't bother with plain jane K04... __________________

12-20-2005, 10:27 PM	#10
LaserAvantS4 AudiWorld Super User Garage is empty, add now Join Date: Nov 2003 Posts: 4,832	OT: got the mani: thanks. did you cut the bolts to the turbos? there are few violence marks on them __________________ LaserAvantS4 FOR SALE SPORTEC stuff Zeitronix ZT2 wideband kit with boost sensor and LCD display Stock M Box "life is too short to drive boring cars" S4mig@PEBtuning . 2001 LaserAvantS4 stg3

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