Dundon 991.2 GT3 Power Package, +47lbft and +38whp, lose 40lbs

Reply Subscribe

Thread Tools

Search this Thread

10-10-2019, 02:47 PM

#31

JRitt@essex

Basic Sponsor
Rennlist
Site Sponsor

Join Date: Jan 2012

Location: Charlotte NC

Posts: 1,508

Likes: 425

Received 634 Likes on 356 Posts

Very nice Jamie! That is a seriously fat gob of torque across much of the rev range. That slug in the 3500-5000 rpm range must feel great coming out of corners!

Please let me know if you're looking for more testers, and I can mention it to our parade of GT3 brake customers. Also, if you have this on Facebook pass me a link and I'll share it on our FB page and with our owners group. Thanks.

__________________
'09 Carrera 2S, '08 Boxster LE (orange), '91 Acura NSX, Tesla Model 3 Performance, Fiesta ST
Jeff Ritter
Mgr. High Performance Division, Essex Parts Services
Essex Designed AP Racing Radi-CAL Competition Brake Kits & 2-piece J Hook Discs
Ferodo Racing Brake Pads
Spiegler Stainless Steel Brake Lines
704-824-6030
jeff.ritter@essexparts.com

Reply Like

10-11-2019, 06:35 AM

#32

mdrums

Race Director

Join Date: Mar 2006

Location: Tampa

Posts: 15,358

Likes: 327

Received 180 Likes on 127 Posts

Quote:

Originally Posted by Jamie@dundonmotorsports

First performance tester data in, he did Street headers and Full Intake Kit
Don't want to steal his thunder...
End of straight speeds increased from 166 before the kit to 171 after
~2seconds faster lap times than 991.2 GT3's that were within 0.5seconds before the mods (this is the most variable data so take with a grain of salt).
And dropped on average about 9.2-9.3 seconds 60-130 before to 8.4-8.5seconds after.

More data is coming in and more kits going out...

166 up to 171 on a track is huge huge monumental gain. What track? Congrats on creating mods that actually work in real life.

Reply Like

The following users liked this post:

bogey1 (10-11-2019)

10-11-2019, 03:02 PM

#33

Jamie@dundonmotorsports

Basic Sponsor
Rennlist
Site Sponsor

Thread Starter

Join Date: Jan 2016

Location: Gig Harbor, Wa

Posts: 1,954

Likes: 158

Received 368 Likes on 204 Posts

Quote:

Originally Posted by mdrums

166 up to 171 on a track is huge huge monumental gain. What track? Congrats on creating mods that actually work in real life.

Brainerd International Raceway. And thanks, just good to see real world results following what we find on the dyno (if not a bit better than we find on the dyno)

Jamie

__________________
Dundon Motorsports
Gig Harbor, WA
253-200-4454
jamie@dundonmotorsports.com

www.dundonmotorsports.com
Facebook.com/dundonmotorsports
Instagram @dundon_motorsports

Last edited by Jamie@dundonmotorsports; 10-11-2019 at 07:57 PM.

Reply Like

10-11-2019, 03:34 PM

#34

GrantG

Addict
Rennlist Member

Join Date: Jun 2002

Location: Denver

Posts: 18,015

Likes: 2,034

Received 4,941 Likes on 2,799 Posts

Quote:

Originally Posted by mdrums

166 up to 171 on a track is huge huge monumental gain.

Yep, at speeds like that it is much harder to gain 5 mph than at less fast tracks (hard to break 140 mph at my local track).

I guess we have to assume the driver survived the following corner

With a faster top speed, you have to start to brake a little earlier which makes the gain all the more impressive.

Reply Like

04-27-2020, 09:09 AM

#35

Cay_PI

Racer

Join Date: Aug 2016

Posts: 405

Likes: 62

Received 97 Likes on 70 Posts

Does your center plenum use the same resonance flap configuration as the OEM part? Also the same for .1 and .2 cars?

Reply Like

04-27-2020, 11:33 AM

#36

A/S

Burning Brakes

Join Date: Sep 2013

Location: U.S.

Posts: 846

Likes: 0

Received 286 Likes on 131 Posts

^^^^the .1 only uses one flap. The .2 uses two flaps. The Dundon Plenum uses the .2 two flaps, indeed the installation requires the removal of the flaps from the stock plenum and installation into the Dundon plenum. This flaps swap and getting the plenum installed with the vacuum lines was where we spent most of the time in the installation.