twospyders

Mine is waiting to be installed. I love what Dundon did to my GT3.

handpainttosample

Sorry totally blanked out on that !

BabyNSX

YES! pictures and sound clips

Jevi Javi

no dynos?

Jamie@dundonmotorsports

Were sent to insiders via email and have been up on the product page for a while now.



Dundon Street Headers to the factory muffler


With Street headers and the forth coming Dundon Rear Section will look a bit more like this.



Dundon GT4RS Street Headers and Rear Section.

renn.tp

Any update on the rear section?

BabyNSX

Also curious... waiting on the standard GT4 rear section here

renn.tp

Bump on the rear section

BabyNSX

Rear section for the 4RS has been updated and released a week or so ago... Dundon is developing adapters to make this box fit with the GT4 (presumably for those customers that already have their headers and OAPs).

Keenly waiting here for those adapters to be finished

Avera

I think it is safe to say a couple things at this point . . .

(1) the OEM rear box is really good at what it does . . . other than tone production, which is not RSR but not terrible either

(2) Dundon is really good at what they do . . . and have not been able to produce a rear section solution to couple with their headers and OAPs

Avera

Jamie@dundonmotorsports

Until now... We got the power we wanted, sound we wanted without compromise. Took 11 revisions, and 3d printing to eliminate 18" of secondary length to allow the car to make even more power....

Jamie@dundonmotorsports

GT4RS dyno's below, we expect the muffler to have similar improvements on the 718 GT4, but haven't had one on the dyno yet. Nice thing is with the Cobb tuning available on the 718 GT4 we should be able to be dial it in really nicely...


This is the full package of Street Headers and Our V11 Muffler on a GT4RS vs the GT4RS stock

This is the full package vs just street headers on the stock muffler.



Sounds delicious as well...

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Delidf8

Hi Jamie, thanks for the data.

What about the exhaust without header package? (for the lucky owners of monitored GPF...)

Power/torque wise, we should expect a similar gain as over street header, right ?
And sound wise, the higher pitch should remain, right?

About your intake system being developed, will this be compatible with Euro cars ? no need of tune?

Thanks

Avera

Jamie

Like many, I am a big fan of Dundon products, so the following is by no means meant to be a dig toward your efforts . . .

Your above post focuses on power gains delivered by the rear box replacement for the RS (and, presumably, GT4). That is great, but I think know that what your target audience has been asking for is a rear box solution that produces better tone without intolerable drone, PARTICULARLY when coupled with your headers/OAPs

Avera

UncleDude

Well hello version 11, you freaky looking thing.