well i havent been as busy working on the car as i would like but then again if i was id run out of things to do or money. which is not on my list of things to do
So iv changed my exhaust to a much better flowing cleaner install 3" setup. after realizing there is no way to make a 4" setup quiet EVER on an rx7 and the 3" will support power goals of 99% of us. so build pics of that as follows.
3" exhaust setup specs info.
409 stainlesssteel 3" tubing 6ft worth and i have 3ft or so leftover
only used 2 bends total 1x 90 and 1x 45 mandrel 409SS
2x v-band clamp setups for ease of install and service THEY ARE SOOOO NICE TO WORK WITH
1x 3x6" flex pipe for movment
1x dynomax bullet race muffler 24" i believe NOT SS unfortunatly fiberglass packing so i dont know how long itll last
1x magnaflow muffler dont know which one i had it laying around
1x SS wideband bung
i also have 100ft of exhaust wrap i have yet to put on as i think i want it a bit quieter BUT im not sure if the wrap will be enough or should add another dynomax or build my own full SS style from the old 4" setup then wrap it. take a look at the video it has the sound but dosent pick up the deep bass tone of it unforunatly.
I opted to weld it all up with 308SS .025 mig as i dont have a backpurg setup for my tig yet although i should have tried as the 110v mig i have definatly struggles with the SS it just needs more heat that a 220v system would give but oh well.
and for cuting the hole for the wideband i fired up my new plasma at lets just say it was worth it
heres the pics ill get the video up soon.
heres what i ordered. it is WAYYYY to many bends i only used 2 but ill build the downpipe for my single out of some of this so hopefully ill be able to use the rest somewhere.

heres the patient ready for operation

This is the old 4" i built notice the poor flowing midpipe. This setup is LOUD its not for me so im scrapping it and trying to recoup some cash selling the mufflers and v-bands. the only thing i did like about it for its size it didnt hang any lower than stock suspension parts. not an ideal setup but i learned ALOT from building it and that is what this project car is all about. so the new setup is much better designed.

another old setup the catback section did flow really nice unlike the midpipe. notice the flowmaster

DONT use these on your rotary its not designed for this type of engine use it on your old muscle car or v8 truck not the rotary

and hers a shot of sections being built up and my welding and cutting setup used by this DIYer