Turbine inlet pressure testing part II: Real boost

Ochlockonee · 09-27-2005, 10:09 AM

With boost set at 20.5 psi and tapering to 18.5 psi as measured by the map sensor,I got 42 psi of turbine inlet pressure past~6000 rpms.
Relevant hardware includes Apr downpipes with test pipes, some kind of Apr catback with resonator removed and replaced with a Magnaflow straight-thru can. The turbos have zero clearance cold sides and extrude honed hot sides. Not sure what effect, if any the turbo mods would have.

Mike2kS4 · 09-27-2005, 10:27 AM

I'm guessing your hot-side work has evened out the TIP from the increased boost level of your K04's over stock settings. I believe a stock K04 running at designed boost levels should stay around 2:1 TIP/Manifold pressure ratio.

It'd be interesting to see what my car, with EH and clearancing, measures out at... especially given the prodigious cold-side flow numbers I'm seeing.

Also, keep in mind pressure drop over the IC's when figuring these calcluations from MAP readings.

Ochlockonee · 09-27-2005, 10:29 AM

Mike2kS4 · 09-27-2005, 10:41 AM

I have a few friends with K04 and K04 hybrids of varying spec that I could check out too.

BoneStockS4 · 09-27-2005, 11:01 AM

Imolavirus@BuehnEngineering · 09-27-2005, 11:22 AM

to test out some of the k03 hybrids at stage 3- and at stage 3 levels.

Mike2kS4 · 09-27-2005, 12:21 PM

Mike2kS4 · 09-27-2005, 12:22 PM

So long as you can make it to NJ!

Ochlockonee · 09-27-2005, 05:37 PM

I've got no money in it, and I've seen what I need to see already.

Pop3 · 09-28-2005, 12:02 AM

09-27-2005, 10:09 AM	#1
Ochlockonee Member Garage is empty, add now Join Date: Mar 2004 Posts: 2,951	Turbine inlet pressure testing part II: Real boost With boost set at 20.5 psi and tapering to 18.5 psi as measured by the map sensor,I got 42 psi of turbine inlet pressure past~6000 rpms. Relevant hardware includes Apr downpipes with test pipes, some kind of Apr catback with resonator removed and replaced with a Magnaflow straight-thru can. The turbos have zero clearance cold sides and extrude honed hot sides. Not sure what effect, if any the turbo mods would have. __________________ "No, a flux capacitor is not compatible with a ham sandwich."

09-27-2005, 10:27 AM	#2
Mike2kS4 AudiWorld Super User Garage is empty, add now Join Date: Jun 2002 Posts: 12,096	Good info... I'm guessing your hot-side work has evened out the TIP from the increased boost level of your K04's over stock settings. I believe a stock K04 running at designed boost levels should stay around 2:1 TIP/Manifold pressure ratio. It'd be interesting to see what my car, with EH and clearancing, measures out at... especially given the prodigious cold-side flow numbers I'm seeing. Also, keep in mind pressure drop over the IC's when figuring these calcluations from MAP readings. __________________ 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.

09-27-2005, 10:29 AM	#3
Ochlockonee Member Garage is empty, add now Join Date: Mar 2004 Posts: 2,951	I'll ship the tester to you tomorrow. __________________ "No, a flux capacitor is not compatible with a ham sandwich."

09-27-2005, 10:41 AM	#4
Mike2kS4 AudiWorld Super User Garage is empty, add now Join Date: Jun 2002 Posts: 12,096	Thanks! I have a few friends with K04 and K04 hybrids of varying spec that I could check out too. __________________ 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.

09-27-2005, 11:01 AM	#5
BoneStockS4 AudiWorld Senior Member 2002 Audi S4 Join Date: Jun 2002 Posts: 1,719	I'd be willing to donate time with my car to the cause - K04/K16's with turbine clearancing __________________ __________________________________________________ ____________________________ __________________________________________________ ____________________________ 2002 Nogaro 6spd S4 with Sport Package click here for my photo albulm -Neuspeed RS10's with 235/35/19 Bridgestone RE050 Pole Positions (summer) -RS4 Replicas with 225/40/18 Dunlop Wintersport 3Ds (winter) -Stasis Motorsports with 700F/800R springs, corner balanced -Intrax front sway bar, Intrax 22mm rear sway bar -EPL stage 3 custom tune -K16/K04 Buehn Engineering hybrid turbos with ceramic coating, port and polishing, and turbine clearancing -AWE Intercoolers, Twin2, DTS -ASP 3" downpipes w/cats -VAST ceramic coated exhaust manifolds -Clutchmasters Stage 4 clutch and lightweight flywheel -Stasis high bias 4:1 center differential -Stasis Motorsport 14" 6-pot Alcon BBK -Stasis Tracksport rear brake kit -RS4 motor mounts, RS4 tranny mounts, VAST snub mount -RS4 grill, M3 lip spoiler, Euro tail lights, XM Radio -APR bi-pipe -710N BPVs, Walbro fuel pump, Samco IC hoses -Toyguy shifter -otherwise BONESTOCK... Been there, done that: -CPP front upper control arms (RIP after 20K) -Meyle "OEM" upper control arms (RIP after 17K) -Tracksports with 600F/700R/touring valving -Tracksports with 700F/800R/sport valving -Tracksports with 550F/650R/sport valving Interesting Trivia: -Clutchmasters flywheel weighs 13.95lbs.

09-27-2005, 11:22 AM	#6
Imolavirus@BuehnEngineering AudiWorld Super User Garage is empty, add now Join Date: Mar 2002 Posts: 17,943	any details on your setup (tester wise) and i could throw one together to test out some of the k03 hybrids at stage 3- and at stage 3 levels. __________________ -Jacob ^^^CLICK SIG FOR BUEHN ENGINEERING WEBSITE^^^ <big><big>Website Here!!!</big></big> <big>Items For Sale</big>

09-27-2005, 12:21 PM	#7
Mike2kS4 AudiWorld Super User Garage is empty, add now Join Date: Jun 2002 Posts: 12,096	YGM! __________________ 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.

09-27-2005, 12:22 PM	#8
Mike2kS4 AudiWorld Super User Garage is empty, add now Join Date: Jun 2002 Posts: 12,096	Bonestock, oh the irony. No problem... So long as you can make it to NJ! __________________ 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.

09-27-2005, 05:37 PM	#9
Ochlockonee Member Garage is empty, add now Join Date: Mar 2004 Posts: 2,951	I'm sure Mike will help you out there. You can also just get him to send mine to you. I've got no money in it, and I've seen what I need to see already. __________________ "No, a flux capacitor is not compatible with a ham sandwich."

09-28-2005, 12:02 AM	#10
Pop3 Junior Member Garage is empty, add now Join Date: Jun 2003 Posts: 1,378	How about LaBrees vs. any other Dp w/ same turbos? __________________ Next mods: chipset with overboost option and stg3 rims (folk+nittos) and interior ledlights

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