Z4MC - Supersprint Muff, XPipe, Sec 1, Vids, Dynos

deknight · 09-17-2008, 01:56 PM

When I bought my 07 M Coupe used, it came with Supersprint Sport Mufflers and X Pipe. It sounded okay but still a little on the quite side. I track this car and really need the feedback from exhaust note especially for throttle blipping on the downshift. Below are two videos one before the section 1 (secondary cat delete also called connecting pipes) was installed and one after. Also I took a pre section 1 install dyno and will get the car dynoed this week to see the gains if any. The video does not do the sound change justice. The car is louder overall and deeper. Like turning the bass up and volume up from an 8 to an 12 or so.

Before Vid:

After Vid:

Before dyno:

Name: DynoRun[1].jpg
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Peak Hp: 291
Peak Tq: 239

Second Dyno to follow. I know some were curious about this mod for sound and power. The dyno will tell us alot, however I must say the car is definitely zippier! The car pulls alot more from 4k upward. Before it felt hindered in the upper revs now it feels more free to go. The M coupe was already quick now it feels like there is even more of a burst of power that comes on. I really love this car!

pbdm4k · 09-17-2008, 04:13 PM

Good to know how much power gains all those pipes are giving!

Goes to show as well that BMW did an amazing job maxing output of the S54.

MMMazing07 · 09-17-2008, 06:00 PM

looking forward to your second dyno with the secondary cat delete

OH FO SHO · 09-17-2008, 10:23 PM

i love your car

sho-one · 05-19-2011, 10:00 AM

hey bro, just installed xpipe and powerloop mufflers, what's a good place to get the cat deletes?

shitbrownMcoupe · 05-20-2011, 01:36 AM

saw that video on youtube countless times before getting my SS full system...

but the video makes the car look very short and fat....

good buy buddy

alvinli217 · 05-20-2011, 01:50 AM

good to know...does it require ECU tuning for secondary cat delete or anything else?

sho-one · 05-20-2011, 07:46 AM

no sensors after secondary cats so no ECU tuning required or CEL lights thrown. However, if you do get the headers, you prob need to re-locate the o2 sensors to the secondary cats

mfanatic325 · 05-22-2011, 09:14 AM

Now to get headers. Then you'll be wondering why you didn't do headers to begin with

However, be warned about rasp! Unless you plan on cutting up your section1/S-Pipe/connecting pipe and putting in some reasonators.

I haven't yet dynod my car after putting in SS uncatted section1, SS x-pipe, BMC filter, RPi scoop, etc...
But when I only had headers, AA ECU tune, and SS race mufflers, the car put out ~300rwhp and ~240rwtq on a DynoJet. And that was with no fans/blowers to simulate road-driving and to cool the car

I'm expecting at least 315rwhp and 250rwtq next time I strap on to the dyno, especially with a fan or two for fresh air to the intake duct

007MCoupe · 05-23-2011, 10:30 AM

Quote:

Originally Posted by shitbrownMcoupe

saw that video on youtube countless times before getting my SS full system...

but the video makes the car look very short and fat....

good buy buddy

same! I haven't gotten any SS parts YET, but I've watched this video countless times.

09-17-2008, 01:56 PM	#1
deknight New Member 0 Rep 14 Posts Drives: 2007 Z4 M Coupe Join Date: Jul 2008 Location: Los Angeles iTrader: (0)	Z4MC - Supersprint Muff, XPipe, Sec 1, Vids, Dynos When I bought my 07 M Coupe used, it came with Supersprint Sport Mufflers and X Pipe. It sounded okay but still a little on the quite side. I track this car and really need the feedback from exhaust note especially for throttle blipping on the downshift. Below are two videos one before the section 1 (secondary cat delete also called connecting pipes) was installed and one after. Also I took a pre section 1 install dyno and will get the car dynoed this week to see the gains if any. The video does not do the sound change justice. The car is louder overall and deeper. Like turning the bass up and volume up from an 8 to an 12 or so. Before Vid: After Vid: Before dyno: Peak Hp: 291 Peak Tq: 239 Second Dyno to follow. I know some were curious about this mod for sound and power. The dyno will tell us alot, however I must say the car is definitely zippier! The car pulls alot more from 4k upward. Before it felt hindered in the upper revs now it feels more free to go. The M coupe was already quick now it feels like there is even more of a burst of power that comes on. I really love this car! __________________ 2007 Alpine White Z4 M Coupe, Superspring Sport Exhaust & X-pipe, H&R Springs, Hamann Strut Tower Brace, APR GTC 200 Rear Wing & Front Canards. 2007 Nurburgring Blue M6 many mods
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09-17-2008, 04:13 PM	#2
pbdm4k Lieutenant Colonel 75 Rep 1,689 Posts Drives: 2010 335d Join Date: May 2007 Location: North of the Border iTrader: (3)	Good to know how much power gains all those pipes are giving! Goes to show as well that BMW did an amazing job maxing output of the S54. __________________ 2010 BMW 335d "Ha! She wants the D." 2006 VW Jetta 2.5 Once upon a time... '03 VW GTI, '99 Audi A4 1.8TQ, '00 VW Jetta 1.85T, '09 BMW 335i xDrive, '04 BMW Z4 3.0i, '01 Audi TT 1.8T, '04 Volvo S80 2.5T
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09-17-2008, 06:00 PM	#3
MMMazing07 More than you can afford pal....ferrari 181 Rep 1,471 Posts Drives: Z4M Join Date: Aug 2007 Location: MD iTrader: (0)	looking forward to your second dyno with the secondary cat delete
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09-17-2008, 10:23 PM	#4
OH FO SHO Captain 15 Rep 615 Posts Drives: z4 Join Date: Jun 2007 Location: california iTrader: (0)	i love your car __________________ '03 3.0i z4: tiag ext., red int., SMG, sport, premium HAMANN exhaust l HAMANN front lip l 19" Miro type 366 (HAMANN edition race replicas) l RPI air scoop l KW v2 coilovers *-MY PICTURE THREAD-*
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05-19-2011, 10:00 AM	#5
sho-one MMA fighter and F1 test driver 18 Rep 362 Posts Drives: Z4///M coupe bulletproof Join Date: Jun 2009 Location: omaha ne iTrader: (4)	hey bro, just installed xpipe and powerloop mufflers, what's a good place to get the cat deletes? __________________ NOW:08 M.Coupe SMB #102/248 #1669/1815 :\|MORRVS8\|APEX8\|SS.X-pipe\|SS.PW.Loop\|AFE.intake\|Matte.grill\|short.ant\|Z HP.knob\|interior.LED\|bulletproof 09 Audi Q5 THEN:96Accord\|98Camry\|04TSX SC\|06 M3\|06A4\|05Civic Si\|05Imprezza\|05S2000\|08FJ
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05-20-2011, 01:36 AM	#6
shitbrownMcoupe Lieutenant 41 Rep 543 Posts Drives: 2006 z4 M coupe Join Date: Apr 2010 Location: Toronto iTrader: (0)	saw that video on youtube countless times before getting my SS full system... but the video makes the car look very short and fat.... good buy buddy __________________ H&R Coilovers, BBS LM-R 19's, K&N Drop Filter. SS step headers, race cats, x pipe, sport mufflers Brembo BBK Yellow
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05-20-2011, 01:50 AM	#7
alvinli217 Captain 47 Rep 715 Posts Drives: Imola RED dIrTy Z4MR - SOLD Join Date: Jul 2010 Location: Vancouver, B.C iTrader: (2)	good to know...does it require ECU tuning for secondary cat delete or anything else? __________________ RPI scoop\|BMC drop in filter\|EAS V1 aluminum mount\|ZHP shiftknob\|RHO plate holder\|matte black grill\|LED interior & license plate light\|RE SSK\|RE tranny mount\|UUC engine mount\|Bavarian CDV\|clutch stop\|18" Forgestar CF5 GOLD\|RPI exhaust\|H&R coilovers\| RE RSM\| coming soon: aFe intake\|tune\|secondary cat delete\|
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05-20-2011, 07:46 AM	#8
sho-one MMA fighter and F1 test driver 18 Rep 362 Posts Drives: Z4///M coupe bulletproof Join Date: Jun 2009 Location: omaha ne iTrader: (4)	no sensors after secondary cats so no ECU tuning required or CEL lights thrown. However, if you do get the headers, you prob need to re-locate the o2 sensors to the secondary cats __________________ NOW:08 M.Coupe SMB #102/248 #1669/1815 :\|MORRVS8\|APEX8\|SS.X-pipe\|SS.PW.Loop\|AFE.intake\|Matte.grill\|short.ant\|Z HP.knob\|interior.LED\|bulletproof 09 Audi Q5 THEN:96Accord\|98Camry\|04TSX SC\|06 M3\|06A4\|05Civic Si\|05Imprezza\|05S2000\|08FJ
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05-22-2011, 09:14 AM	#9
mfanatic325 ///M-fanatic 193 Rep 3,885 Posts Drives: '01 911 Turbo Join Date: Oct 2007 Location: Cupertino, CA. iTrader: (23)	Now to get headers. Then you'll be wondering why you didn't do headers to begin with However, be warned about rasp! Unless you plan on cutting up your section1/S-Pipe/connecting pipe and putting in some reasonators. I haven't yet dynod my car after putting in SS uncatted section1, SS x-pipe, BMC filter, RPi scoop, etc... But when I only had headers, AA ECU tune, and SS race mufflers, the car put out ~300rwhp and ~240rwtq on a DynoJet. And that was with no fans/blowers to simulate road-driving and to cool the car I'm expecting at least 315rwhp and 250rwtq next time I strap on to the dyno, especially with a fan or two for fresh air to the intake duct
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