Notices
991 | 997 | 996 General Porsche Water Cooled 911 Discussion Forum.

Sport headers, exhausts & tuning for '09 C4S

Old Feb 5, 2011 | 08:22 AM
  #31  
997carrerasblk06's Avatar
Teamspeed Pro
Joined: Oct 2010
Posts: 3,559
From: New England
997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute997carrerasblk06 has a reputation beyond repute
Awesome can't wait to hear and see it!
 
Old Feb 7, 2011 | 09:58 AM
  #32  
Gardus's Avatar
Teamspeed Junior Member
Joined: Nov 2010
Posts: 72
Gardus is on a distinguished roadGardus is on a distinguished roadGardus is on a distinguished roadGardus is on a distinguished road
Talking about performance increase, don't expect much changing just the catback exhaust.
These are the results from our tests (best of 3/4 tries both for oem and exhaust)

OEM:
Claimed data:
Horsepower 385 Hp @ 6500 rpm
Torque 420 Nm @ 4400 rpm

Actual data:
Horsepower 366,4 Hp @ 6760 rpm
Torque 408 Nm @ 4920 rpm

Supersprint:
- Manifold R.- L. 245601
- Front metallic kat R. 245602
- Front metallic kat L. 245622
- "X-Pipe" 245613
- Rear exhaust R. 245604
- Rear exhaust L. 245634
- Endpipes kit R. 245626
- Endpipes kit L. 245646

Actual data:
Horsepower 372,9 Hp @ 6690 rpm
Torque 414,1 Nm @ 4940 rpm


As you can see the standard car was bit down on power. We tested other cars and results were similar.

On the 997.1, the 3,6 liter model:
OEM
Claimed data:
Horsepower 355 Hp at 6600 rev/min
Torque 400 Nm a 4600 rev/min
Actual data:
Horsepower 341,2 Hp a 6795 rev/min
Torque 383,5 Nm a 4645 rev/min.

Supersprint:
Manifold R.-L. 242201
Kat.R.+ L. 100CPSI 243402
Rear exh. R.- L. 243404 + 243434
Connecting pipe 243433
Endpipes R.-L. 243415 + 243535
Actual data:
Horsepower 364,6 Hp at 6685 rev/min
Torque 408,1 Nm at 4700 rev/min.



These are REAL values, with all the data on temperature, pressure etc you may need (on our website you can download the pdf files)

When you see claimed gains on any products, see if there's a dyno test of the same car before and after the mod in the same conditions. Otherwise they're just speculations and marketing exercises.
 
Old Feb 7, 2011 | 11:03 AM
  #33  
DGN C4S's Avatar
Thread Starter
|
Teamspeed Junior Member
Joined: Nov 2010
Posts: 52
DGN C4S is an unknown quantity at this point
Thank you, Gardus.

I certainly appreciate the info and understand the 'like for like' comparisons with regard to conditions, ambient temperature, etc. Don't have ready access to a dyno and I am also of the same opinion regarding 'marketing optimism' with various products.

I believe that there are only modest gains associated with exhaust upgrades with the possible exception of custom headers included in the mod. That's the primary reason that I am going to use an ECU upgrade to compliment the exhaust mod.

I am not sure of the specificity,but so far in my brief ownership of a P-Car (I was/am a big custom built 4X4 kinda guy,as in the custom built Hummer in my Avatar background & albums) but, so far, I have found that what OEM/Porsche has 'speced' is understated and conservative, not overstated. Having mentioned that, I appreciate the input and have discussed your product both on this thread and via PM.

Bottom line is; If you folks could get a little more competitive with your price points I would happily consider your product v. the competition. Most folks I have either chatted w/ on this forum or one on one in person are happy with the competition's product offering and have stated that the added HP is minimal re; the exhaust upgrade. To do so based upon the exhaust note, not the power increase. Hence, the chip tuning/software ECU mods to compliment the exhaust.
If you have a proposal or proposition I would be happy to hear it. (PM's are welcomed)

I have previously been in contact with Jared as well. Again, thank you for posting the info/data/graphs. I appreciate it and can only benefit & learn from the input.
Best,
 
Old Feb 7, 2011 | 11:41 AM
  #34  
Gardus's Avatar
Teamspeed Junior Member
Joined: Nov 2010
Posts: 72
Gardus is on a distinguished roadGardus is on a distinguished roadGardus is on a distinguished roadGardus is on a distinguished road
As I think you should have already talked with jared about prices, there's nothing new about that.
 

Last edited by Gardus; Feb 7, 2011 at 11:46 AM.
Old Feb 7, 2011 | 07:38 PM
  #35  
carfan's Avatar
Teamspeed Junior Member
Joined: Feb 2010
Posts: 67
carfan is an unknown quantity at this point
Why are the power gains with Supersprint so low ?
 
Old Feb 8, 2011 | 02:29 AM
  #36  
DGN C4S's Avatar
Thread Starter
|
Teamspeed Junior Member
Joined: Nov 2010
Posts: 52
DGN C4S is an unknown quantity at this point
Originally Posted by carfan
Why are the power gains with Supersprint so low ?
Good question. As I mentioned in my above reply, everything that I have researched (reading through many threads on this and other forums, extensive reading in auto specialty mags, driving the cars, talking w/ other P-car owners and experiencing my own C4S) indicates that the OE Porsche specs are conservative and understated, not overstated and hyped.

Supersprints data and conclusion above is the only exception to this that I have encountered.
Thoughts?
 
Old Feb 8, 2011 | 03:06 AM
  #37  
Gardus's Avatar
Teamspeed Junior Member
Joined: Nov 2010
Posts: 72
Gardus is on a distinguished roadGardus is on a distinguished roadGardus is on a distinguished roadGardus is on a distinguished road
What can I tell you? We test A LOT of cars here, and the results can vary a bit from car to car of the same models, but for the 997 Carrera I can tell you that they don't have the claimed horsepower. The GT3 instead have a little bit more!

Maybe it's limited by the ecu map so a bit of tinkering could see the figures increase with the same complete exhaust. You have to keep in mind that it's a NA engine already close to 100 bhp/l, without increasing the rev range (costly...buy a gt3!) or working on the intake I think a 20bhp increase with exhaust and remap it's already a good gain.
 
Old Feb 8, 2011 | 10:41 PM
  #38  
carfan's Avatar
Teamspeed Junior Member
Joined: Feb 2010
Posts: 67
carfan is an unknown quantity at this point
Originally Posted by Gardus@Supersprint
Maybe it's limited by the ecu map so a bit of tinkering could see the figures increase with the same complete exhaust. You have to keep in mind that it's a NA engine already close to 100 bhp/l, without increasing the rev range (costly...buy a gt3!) or working on the intake I think a 20bhp increase with exhaust and remap it's already a good gain.
Fully agreed !

Techart and FVD reach 420HP with a simmilar setup as your, BUT they include ECU modification and maybe here is the key point ?
 
Old Feb 9, 2011 | 02:10 AM
  #39  
DGN C4S's Avatar
Thread Starter
|
Teamspeed Junior Member
Joined: Nov 2010
Posts: 52
DGN C4S is an unknown quantity at this point
Having the exhaust mods done and the ECU upgrade goes hand in hand for me, at least. I have stated as much from the onset, MOL.
If I can realize net BHP gains of 20-23 with both mods being done I will be happy with that outcome.
@ Gardus; If by chance I am not happy, then you have a point. I may cast my gaze towards a GT3 or Turbo.
 
Old Feb 9, 2011 | 03:37 AM
  #40  
Gardus's Avatar
Teamspeed Junior Member
Joined: Nov 2010
Posts: 72
Gardus is on a distinguished roadGardus is on a distinguished roadGardus is on a distinguished roadGardus is on a distinguished road
I think 390 REAL bhp on the 3.8 engine would be already close to the limit of the engine without a charger. If it's a "lucky" engine, close to the claimed figures from the start.

As this isn't a very fast revving engine horsepower is limited.
Torque is already VERY good, more than 100 nm/liter is a very good results, 414 nm from a 3.8 it optimal. The curve is very flat, from 3500 to 6500 is close to the max value.

As many of you will know, power is torque*revs. If this engine could rev to 8k with the same torque value it would go well beyond 400 bhp.
In fact, even if the starting point is not this engine, porsche already did it with the GT3 engine, which has top power at 8000 rpm and goes over 440 bhp.
To trasform a 7k rpm engine into a 8k rpm one would be very costly and not worth it.

A bit of optimization, for sound, response and all round usability, without expecting improbable numbers, is worth the cost of an exhaust, a few mods on the intake en an ecu maps.

With our exhaust the big factor is the torque boost from 3000 to 5000 rpm, so in real world driving the cars IS faster. The biggest gain is over 40 nm at 3800 rpm, resulting in more than 20 bhp. You can feel the increased "shove" in the back when you nail it!

I'd like to test this engine with the "performance pack" (the one on the sports classic and the other limited models), to see if it gets close to the claimed figures.
 

Thread Tools
Search this Thread

All times are GMT -4. The time now is 01:07 AM.