Look what I stummbled across, this seems like the perfect replacment for the secondary cats.

The only thing stopping me is the amount of custom work the exhaust shop would have to do, they would need to make a Y pipe then the muffler then another Y pipe but alot of twists and bends. Need to get some quotes.

http://www.holley.com/data/types/pic...ffler_ZOOM.jpg

 

thats not going to fit in the space were the sec. cats are located. its a full muffler not a cat. you could use it to replace your muffler but realize without headers most exhaust mods yield minimal results.
the best setup i have seen on a xfire was metal miltia's true dual setup with an ansa muffler. a bit loud but he pulled some great dyno numbers with minimal mods and a dyno tune

 

Cut-outs my friend, cut-outs....been around since cars where cars and motorheads were motorheads...but haven't seen much hp from straight thrus so far...but old fashion cut outs would be cheaper and easier if that is what you are seeking...

 

Of course it will fit, if you measure across from one cat to the other its more then enough room, trust me I've looked and looked again, it will definatly work. Here are some other interesting numbers I found.

The results in HP order:
1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
2.Bassani Real Street 373.7 hp/ 333.8 tq
3.Hooker Maxflow 373.5 hp/ 333 tq
4.Borla XS 373.3 hp/ 332.6 tq
5.Magnaflow 372.8 / 332.5 tq
6.MAC 372.3 hp / 331.5 tq
7.Flowtech Afterburner 372.3 hp/ 330.1 tq
8.Hooker Aerochamber 372.1 hp/ 330.4 tq
9.Bassani 372 hp/ 333.5 tq
10.Spintech 371.6 hp/ 332.2 tq
11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
12.Borla XR1 370 hp/ 334 tq
13.Flowtech Terminator 369.5 hp / 331.3 tq
14.Dynomax Ultra Flo 369.4 / 333.2 tq
15.Flowmaster 369.4 hp / 331.8 tq
16.Flowtech Warlock 366.3 hp / 325.3 tq
17.No muffs 365.2 hp / 330.1 tq

 

Doc can you elaborate a little more on cut outs, can they be done on our cars?

 

your talking about 2 y pipes which will restrict the flow you are looking thus negating any gains.
your cars exhaust mods so easy! why not use some race cats in place of the secondaries to a true dual setup with a single dual inlet dual outlet magnaflow muffler. just past the secondary cats add a tube at a 45* angle exiting in front of the rear tires with the caps like the muffler. you can open them at the track.
also im having great luck with replacing the factory h pipe with a xpipe from magnaflow. killed the drone and deepened the sound.

 

Hmmm you may have a point my other alternative would be replace the secondaries with straight pipes, and put this flowtech where my resenator used to be.

The only problem with what your saying is where would I find a cap to block the exhaust off when I'm not at the track lol

 

Doc I did alot of research on those exhaust cut outs and there definatly a better option.

My question now is do they work lol? I'm assuming they decrease back pressure resulting in trq levels dropping and ultimatly a slower car? with a nicer sound lol

 

kolevski i did the res delete and the secondary cat dlete on mine. if you replace the resonator with the new muffler you really arent getting anywere as the resonator is a flow thru design.
like i said before your system is so easy why not a true dual with the magnaflow? then if you want a stright exhaust cutouts are an easy addon.
the caps are easy to fab . use the flange from the old cats and a blocking plate with a gasket.

 

Here are two old threads discussing exhaust cutouts:

electric exhaust cutouts?

Just ordered 2.5" DMH low profile E cutouts

 

Talk to Rob about a set of cutouts. He has them on his site. These are for the neon but he has ones that will work with our car as well. They are compact and have a small foot print so they fit practically anywhere.

3" McCord PowerPlate MPP6

He also has a module I put together that opens and closes them at the flip of a switch so you know they are open or closed regardless of the last state they were in when you turned off the car. It also keeps you from having to hold down a button for 10 seconds to open or close them so you don't run the risk of holding it down to long and over driving the motor when you open or close it.

Accelerated Cut-out Controller

 

I read the other treads on the electric cutouts. So....... has anyone posted any dyno or 1/4 mile numbers with these? If you could gain 1 to 2 tenths as suggested in the other thread, I would be all over this. I am a bit sceptical about the gains though. Input anyone?

 

Hot rodders called them "Lake Pipes" I had them on a '56 Mercury. You weld a pipe to your existing header pipe on each side terminating just behind your front tire (or in front of your rear tire) the end of the pipe needs a flange welded on it, you bolt a chrome cap with a gasket on the flange. When your at the track you unbolt the caps and the exhaust takes the path of least resistance. You keep your stock system and don't have to buy the electric (or manual) bypass valves.

 

Thanks guys, I looked at those threads but I dont think I want to go with the electric cut outs, I've heard if you drive over water they start to stop working, and the heat doesnt do them any good either.

I'm happy to go with the old school unbolt, bolt on cut outs but I dont know if there is going to be any power gains.

From the many readings I've done on the net I've seen people gain 20whp and I've seen others loose hp. It all apparently depends on the car. No one has really reported looses or gains with them on our cars!!! Hrmmm what to do...

 

Talk to Rob @ Needswings...this isn't my cup of tea, but if that is what you want to try...he has been there, done that...and this is a cheap way to get there...you can build back pressure if needed, by baffling it...he can help you though...

 

its just my opinion but for whats its worth the exhaust setup is pretty decent on the cars. it runs in almost a straight line with little to no restriction.
remove the secondary cats and the resonator. delete the h pipe and add an x pipe. leave the oem muffler on and run the dog snot out of it. those mods yield a modest inc of power from the secondary cat delete and a massively better sounding car. even if you dont win the race you will sound great going down the track!!

 

I think Rob just ran a straight pipe from his headers lol?

But I'm starting to agree with you guys maybe the cut out isnt the way to go on our cars.

32 I've already deleted my resenator, I'll take my car in next week and get the rear cats taken out, see how it sounds then

 

i would really suggest the x pipe install at the same time. it really mellowed out the sound and the butt dyno says i picked up a pony or two. the x also got rid of all my drone and the high pitched ricey sound from the res and cat delete
i used a magnaflow xpipe from stainless steel i got from ebay for 83$ shipped. course your shipping is another issue!

 

was yours like this?
MagnaFlow Stainless Steel X Pipe 3" Diameter NEW : eBay Motors (item 150412377992 end time Feb-14-10 17:59:17 PST)

 

thats it exactly!! i got it in 2.5" both ends . well built and it fits great in the same spot as the h pipe location. i just centered the x were the h was