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Realized I haven't posted in this thread. I'm running Kooks 1 7/8" headers into their true dual system with dual (not quad) tips, it does in fact fit with the MWC FAB9 and watts link. It's loud, but I don't mind although since I'll be moving to a city with emissions testing next year I'm working with Kooks to get an x-pipe with their green cats I can bolt in easily.
Can you tell which cats those are in your photo. Also would you know if the 4th gen firebird is the same underneath as the camaro? I want to add some on mine.
thanks
My WS6 is lowered 1.5”. I'm running Speed Engineering True Duals. The bolts that come with the kit are absolutely useless. You can't get them tight enough without stripping them. If you leave them loose the pipes come apart. I lost a wideband O2 that way. I upgraded the bolts to stage 8 bolts and also welded a tag on each piece of pipe at the lips to keep them from moving.
It’s a heads and cam car with a 228/228 cam and trick flow heads. Idles a little high at 950 rpm. Needs some tuning. Video doesn't do it justice. It sounds amazing and I get compliments from everyone. Sounds very refined with the cats. It's still loud and will set car alarms off but doesn't have that ratchety straight pipe crackle.
I added the high flow cats to smoothen out the sound and also welded it up on the hangers to get extra clearance. Had to clearance the torque arm as well. No extra heat from cats.
Magnaflow 3" high flow cats. All 4th gens are the same underneath. The only thing that would be different is aftermarket suspension parts.
I thought all the hi flo cats were rounded, yours looks more traditional in shape. I was hoping those may fit better. Any shop I go to, no one will put them on, saying not enough room.
I thought all the hi flo cats were rounded, yours looks more traditional in shape. I was hoping those may fit better. Any shop I go to, no one will put them on, saying not enough room.
Local exhaust shop installs lots of these on Fbodies.
Local exhaust shop installs lots of these on Fbodies.
thanks, it looks like my set up has the pipes turned towards the x pipe closer to the headers leaving less room for cats. Sheesh, Not sure if a shop would run me some pipes moving my x pipe a little further down to get some cats in.
I have been looking at trying to get a fully bolt on header and true dual combo that comes with cats and the only company I have found is Kooks. Any one know any others? I have to emission this car and like to do everything myself on my cars. No access to a welder.
Nice Job on the Muffler system. I wish I had the desire to work on my own exhaust on My truck. So far i have a Cherry Bomb on my 5.2 dodge ram. But it sounds good to me.
I hope some folks who have done exhaust systems can give me an answer here.
We're doing a "true dual" system for one project that I'm working on. This one has some strange parameters/requirements.
The one thing I'm going to need that I haven't located/identified yet is the muffler(s). I think the optimum muffler for this one is going to be dual inlet, dual outlet, all in and out will need to be 2.5". I wish there was a FlowMaster Super 50 Series in that configuration, but they don't make it that way.
This one needs to be quiet (until the cutouts are opened), but preferably not loose (much) performance. I'm looking for something around the same sound level as a stock Cadillac CTS-V, or maybe even slightly quieter than that.
Does anyone have any recommendations/suggestions for this?
We also will be doing cutouts on this one, but piping the cutouts to two additional tips at the rear. The end result will have four tips, like a C7 or late C6 Corvette, with the muffled pipes in the outer positions, and the cutouts going to the center two pipes.
There is a Flowmaster Series 50 dual-in dual-out 2.5" connections #8525554,lists for about $260. Moderate sound
Also there are 2 different Series 50 Big Block mufflers that have either 3" or 2-3/4" inlets that you can swell the pipes going into it to fit.
They are #530504 (3") and 527504 (2-3/4"). Both of these are quieter than the first one.
04-25-2016, 04:07 PM
