Has any put the R diffuser on an RS

Reply Subscribe

Thread Tools

Search this Thread

10-19-2017, 11:02 AM

#61

autoxerGT3RS

Rennlist Member

Join Date: Mar 2010

Location: Cave Creek, AZ

Posts: 113

Likes: 29

Received 12 Likes on 8 Posts

The Porsche Dealer who installed mine said there was no need to cut an opening

Reply Like

10-19-2017, 01:16 PM

#62

jkm155

Track Day

Join Date: Jan 2016

Location: Naples, FL

Posts: 21

Likes: 0

Received 0 Likes on 0 Posts

Are any adjustments necessary to balance the front end, due to the added down force on the rear from the diffuser?

Reply Like

10-20-2017, 04:06 AM

#63

Kobalt

Race Car

Join Date: Dec 2011

Location: Europe

Posts: 4,848

Likes: 58

Received 418 Likes on 197 Posts

Quote:

Originally Posted by RealityGT

^with your speeds, you will actually use all of it.

Too kind

Reply Like

10-20-2017, 05:52 AM

#64

TRAKCAR

Rennlist Member

Join Date: Jan 2008

Location: S. Florida

Posts: 29,337

Likes: 1,148

Received 1,586 Likes on 734 Posts

Quote:

Originally Posted by autoxerGT3RS

The Porsche Dealer who installed mine said there was no need to cut an opening

In AZ? I don’t understand that because the factory makes a hole in the oem cover for a reason?!

Quote:

Originally Posted by jkm155

Are any adjustments necessary to balance the front end, due to the added down force on the rear from the diffuser?

If anything more rake, but I will test and find out.
Once I go 19” I will be more flexible to drop the front more then the rear compared to OEM.

Reply Like

10-20-2017, 06:47 AM

#65

UKPAUL_VG_RS

Intermediate

Join Date: Apr 2007

Posts: 43

Likes: 1

Received 8 Likes on 4 Posts

Quote:

Originally Posted by smookey

I have it on mine, mounted by Manthey.
In addition with competition suspension and wing setting, it creates more downforce on the track, especially in the big and fast curves on the Nordschleife. You feel it a lot (the complete package) in Spa too.

No way to scratch the diffusor...the rear end of the car is not that low.

Absolutly useless if you only drive on the road of course.

Hi, please can you expand/show pictures on how manthey achieve the extreme wing angle at the rear?

Can anyone also actually confirm the R diffuser part No?

Thanks,

Paul

Last edited by UKPAUL_VG_RS; 10-20-2017 at 07:40 AM.

Reply Like

10-20-2017, 08:18 PM

#66

autoxerGT3RS

Rennlist Member

Join Date: Mar 2010

Location: Cave Creek, AZ

Posts: 113

Likes: 29

Received 12 Likes on 8 Posts

Quote:

Originally Posted by TRAKCAR

More cooling, more betterer.

Quote:

Originally Posted by TRAKCAR

In AZ? I don’t understand that because the factory makes a hole in the oem cover for a reason?!

If anything more rake, but I will test and find out.
Once I go 19” I will be more flexible to drop the front more then the rear compared to OEM.

yes AZ and dealer confirmed internally as well

Reply Like

10-20-2017, 08:21 PM

#67

TRAKCAR

Rennlist Member

Join Date: Jan 2008

Location: S. Florida

Posts: 29,337

Likes: 1,148

Received 1,586 Likes on 734 Posts

Thanks!
I’m baffled, why that hole in our oem cover?!

Anyone? Do I really dare to just bolt it on?

Judging by my 22K service interval, my car gets hot!

Reply Like

10-21-2017, 03:56 AM

#68

Kobalt

Race Car

Join Date: Dec 2011

Location: Europe

Posts: 4,848

Likes: 58

Received 418 Likes on 197 Posts

Quote:

Originally Posted by UKPAUL_VG_RS

Hi, please can you expand/show pictures on how manthey achieve the extreme wing angle at the rear?

Can anyone also actually confirm the R diffuser part No?

Thanks,

Paul

Name: photo199.jpg
Views: 791
Size: 544.6 KB

Reply Like

10-21-2017, 06:47 AM

#69

alberthyc

Rennlist Member

Join Date: Mar 2015

Posts: 140

Likes: 2

Received 1 Like on 1 Post

Hi guys, it could simply be that the .2 gt3 was a manual therefore no cut out required. but if its a pdk, cut out would be highly recommended which is done on the .1RS

Reply Like

10-21-2017, 07:00 AM

#70

alberthyc

Rennlist Member

Join Date: Mar 2015

Posts: 140

Likes: 2

Received 1 Like on 1 Post

Anyway, so the conclusion is that the fin diffuser will not upset the RS during track sessions? and instead it is beneficial and positive?

Reply Like

10-30-2017, 07:30 PM

#71

UKPAUL_VG_RS

Intermediate

Join Date: Apr 2007

Posts: 43

Likes: 1

Received 8 Likes on 4 Posts

Final question, if anyone who has fitted the R diffuser to their car can help, can you check / take a picture of the clearance to the right hand side exhaust valve actuator as mine is touching it

Reply Like

10-31-2017, 06:27 AM

#72

Kobalt

Race Car

Join Date: Dec 2011

Location: Europe

Posts: 4,848

Likes: 58

Received 418 Likes on 197 Posts

Quote:

Originally Posted by UKPAUL_VG_RS

Final question, if anyone who has fitted the R diffuser to their car can help, can you check / take a picture of the clearance to the right hand side exhaust valve actuator as mine is touching it

Here we go:

Last edited by Kobalt; 10-31-2017 at 10:23 AM.

Reply Like

10-31-2017, 12:32 PM

#73

UKPAUL_VG_RS

Intermediate

Join Date: Apr 2007

Posts: 43

Likes: 1

Received 8 Likes on 4 Posts

Quote:

Originally Posted by Kobalt

Here we go:

Brilliant, your's seems very close too, I may just trim it down with a tool but I can't see it being an issue, Manthey in 2018 for KW's & setup

Reply Like

10-31-2017, 02:01 PM

#74

Seth Thomas

Rennlist Member

Join Date: May 2004

Location: Cumming, Ga

Posts: 2,263

Likes: 263

Received 250 Likes on 121 Posts

Installed it on my car this past weekend. Install was very simple and straight forward without even jacking the car up. My only issue with fitment on the .1 RS is with my Dundon headers one of the exhaust pipes it touching the diffuser on the front corners of it. Easy fix with a Dremel and all is good.

I have not tracked the car yet so I don't know if there is a difference downforce with it on the car. I think it is going to be negligible until you get into higher speed corners like Turn 12 at Road Atlanta, Turn 16-18 at COTA, etc