Gruppe M intake for 3.8 GT/GT3RS?
03-06-2012, 12:01 PM
#17
Rennlist Member
I'd be interested, but it would depend upon price and performance (stating the obvious) ... anything over $15/bhp is probably "too much" esp for a lowly non-RS ... and it would need to adapt to the non-RS decklid (i.e no cutting) ...
03-06-2012, 12:07 PM
#18
A truly tasty package would include a carbonfiber intake as well- designed for higher flow as the 4.0 piece is, and weight savings high and on the ***. Not sure if your folks would want to tackle that complicated project but what a combo that would be.
Inspiration: https://rennlist.com/forums/997-gt2-...th-seeing.html
If I still had a 3.8 this series of mods would be a no-brainer as part of a well thought out upgrade.
03-06-2012, 12:19 PM
#20
Rennlist Member
perhaps the differential cost between the 3.8 and 4.0 airboxes would be a fairer comparison (in my mind at least, ymmv) ...
I at least (in the case of a replacement airbox) would be less likely to purchase such an item for more than $15-20/bhp ... again ymmv ...
rgds
Larry
03-06-2012, 12:20 PM
#21
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Had their mk2 6GT3 airbox. A work of art, great R&D and a few HP over the stock paper filter on a Maha dyno.
They managed to maximize it's volume by covering every available space in the engine area. A 10-12l increase.
It used 2 seperate KN filters inside.
The only negatives were the price and that it was so big that, despite being made of carbon, it was actually heavier than the stock one!
Sold it to a RLer when I was contemplating with the idea of a DIY dual intake airbox. Dropped that project and I am now running a BMC panel filter with the stock box.
They managed to maximize it's volume by covering every available space in the engine area. A 10-12l increase.
It used 2 seperate KN filters inside.
The only negatives were the price and that it was so big that, despite being made of carbon, it was actually heavier than the stock one!
Sold it to a RLer when I was contemplating with the idea of a DIY dual intake airbox. Dropped that project and I am now running a BMC panel filter with the stock box.
03-06-2012, 12:28 PM
#22
Drifting
Thread Starter
Porsche went to a twin-conical filter on the 4.0 for a reason. As said by the fast and handsome posters above, to make power, it would be paired with a freer flowing exhaust.
A truly tasty package would include a carbonfiber intake as well- designed for higher flow as the 4.0 piece is, and weight savings high and on the ***. Not sure if your folks would want to tackle that complicated project but what a combo that would be.
Inspiration: https://rennlist.com/forums/997-gt2-...th-seeing.html
If I still had a 3.8 this series of mods would be a no-brainer as part of a well thought out upgrade.
A truly tasty package would include a carbonfiber intake as well- designed for higher flow as the 4.0 piece is, and weight savings high and on the ***. Not sure if your folks would want to tackle that complicated project but what a combo that would be.
Inspiration: https://rennlist.com/forums/997-gt2-...th-seeing.html
If I still had a 3.8 this series of mods would be a no-brainer as part of a well thought out upgrade.
The ideal combination would be the carbon intake paired with a Gruppe M exhaust. I've been trying to get Gruppe M to make a Ti exhaust for the 3.8 liters for a while. Again, it really depends on the appetite of the market. For anyone interested, I have an article the Eurotuner Magazine did testing a Gruppe M carbon intake and Gruppe Exhaust for a V-8 M3. I'm happy to distribute. My goal is to create the same performance pairing for Porsche.
Ranger, I am very sorry to hear about your experience with Gruppe M. Our company, HPMX, got involved to prevent those types of issues happening in the future. Prior to us handling Gruppe M in North America, there were a lot of issues; bad service, failed attempts at group buys; sales people who were not knowledgable at all...it nearly caused Gruppe M to just forget about North America entirely.
Please feel free to PM me or send an e-mail to michael.klaskin@hp-motorsport.com
Thanks!
03-06-2012, 12:32 PM
#23
Rennlist Member
Had their mk2 6GT3 airbox. A work of art, great R&D and a few HP over the stock paper filter on a Maha dyno.
They managed to maximize it's volume by covering every available space in the engine area. A 10-12l increase.
It used 2 seperate KN filters inside.
The only negatives were the price and that it was so big that, despite being made of carbon, it was actually heavier than the stock one!
Sold it to a RLer when I was contemplating with the idea of a DIY dual intake airbox. Dropped that project and I am now running a BMC panel filter with the stock box.
They managed to maximize it's volume by covering every available space in the engine area. A 10-12l increase.
It used 2 seperate KN filters inside.
The only negatives were the price and that it was so big that, despite being made of carbon, it was actually heavier than the stock one!
Sold it to a RLer when I was contemplating with the idea of a DIY dual intake airbox. Dropped that project and I am now running a BMC panel filter with the stock box.
03-06-2012, 12:38 PM
#24
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ahem ... I don't think its an apples to apples comparison to present the $/bhp cost of the 4.0 powerplant mods as exemplar of an "acceptable" price/perf for a replacement airbox... "seriously" Nizer, do you?
perhaps the differential cost between the 3.8 and 4.0 airboxes would be a fairer comparison (in my mind at least, ymmv) ...
I at least (in the case of a replacement airbox) would be less likely to purchase such an item for more than $15-20/bhp ... again ymmv ...
rgds
Larry
perhaps the differential cost between the 3.8 and 4.0 airboxes would be a fairer comparison (in my mind at least, ymmv) ...
I at least (in the case of a replacement airbox) would be less likely to purchase such an item for more than $15-20/bhp ... again ymmv ...
rgds
Larry
03-06-2012, 12:46 PM
#25
Rennlist Member
however I am probably not typical, just 'damaged' from the experience of converting a 993 3.6 to 3.8L back in 99'/00' ... after that I am probably over price conscious about such things ... in my experience its probably cheaper to sell the car and buy a faster one!
for an air box mod good for probably +10bhp ... I dont think I would personally pay much more than $1.5k-2k for the item ... but then I am Scottish and we are known for being canny with our money!
03-06-2012, 01:02 PM
#27
Rennlist Member
03-06-2012, 01:19 PM
#29
Rennlist Member
03-06-2012, 08:54 PM
#30
Rennlist Member
^^ Fully agree. I also own an RS4 and I know that the stock airbox is best. The Gruppe M is a lot of stamps for a beautiful, but unproven intake. I'm sure with all the mods, this would be a nice addition but it should be last on one's list of things to do.
What surprises me is that they only need 10 members to commit and they will develop an intake system for the RS. That a small number of people footing the bill on development and manufacturing of this product. It's going to be pricy.
What surprises me is that they only need 10 members to commit and they will develop an intake system for the RS. That a small number of people footing the bill on development and manufacturing of this product. It's going to be pricy.
