Jimmy, I think they are planning on cats after they get the race headers up and running. Could be wrong.

 

Think last I heard they were doing GT4 Race then 911 and possibly catted GT4. I could be wrong though

 

Hi guys,

Race system first, then 991 catted. Then a full system for the GT4 including cats.




Tacked up GT4 Stepped Dundon race headers

 

Nice.

 

Love it, anxiously awaiting

 

Both sides completed, will finish weld tomorrow and have dyno results by the end of the week!



Dundon GT4 Race Headers tacked!

 

Mmmmm....those tubes look delicious....

 

I cant wait to see the results.

 

Wow they do look nice!

 

Subscribed.

 

Which cats do you use?

 

HJS 200cpsi HD cats, spiral wound for durability!

The catted system will be a complete system with a new muffler, valves, cats etc... We want to preserve as much of the performance of the headers as possible so we're building the catted system around it. Will also offer the full exhaust without cats...

 

Are you moving the catalysts to the other side of the axle like FVD does with their CS 100cpsi system, so that the long tube primary design is kept?
Please also offer a minimal weight valveless muffler, with straight pipe or cylindrical resonator options.
Gloss black 89mm double wall slant cut tips like stock preferred.

 

Very interested in the powerband compared to others designs

 

So pumped to see the full system and dyno! Great work!

Ceramic coating as an option direct from you guys would be great too