X-Pipe for more torque?...
Thread Starter
Race Director
Joined: Oct 2001
Posts: 19,653
Likes: 428
From: Melbourne Florida
Cruise-In IV Veteran
When I bought my car the previous owner had removed the cats and pre cats and everything else...he put in long tubes into straight pipes going back to stock mufflers...the sound is very good and I get a lot of compliments and questions about my exhaust...
I don't have any type of crossover at this time, H or X...I am not looking for HP just a little increase in TQ...I don't even know what size pipe is on my car but I'd guess 2 3/4"...I have no resonance presently and would hope an X pipe won't cause any...how it sounds does not matter to me but it happens, as I've said, to sound mean already...lol
I don't have any type of crossover at this time, H or X...I am not looking for HP just a little increase in TQ...I don't even know what size pipe is on my car but I'd guess 2 3/4"...I have no resonance presently and would hope an X pipe won't cause any...how it sounds does not matter to me but it happens, as I've said, to sound mean already...lol
Drifting
Joined: May 2005
Posts: 1,336
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From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
Originally Posted by Louis Bartay
Did you have a shop do a custom 3 inch or a 3 inch B&B?
Melting Slicks
Joined: Nov 2004
Posts: 2,799
Likes: 2
From: Cape Coral FL
Thanks for the plug, Louis.
I'Ve got a direct-fit resonator replacement X-pipe in development, but it's not ready to ship out yet. The manufacturer has made a run of them for me, but they're not done to the specs I sent them (pipes are too far apart). I created them because there is no 2-3/4" X-pipes made by any manufacturer (I sold out of the original run of LTX-pipes), and further..there's no resonator replacement pipe made. Hopefully I'll have them ready by the holidays for those of you who would benefit from it.
Fuzzy... you need to get a measurement of the tube size used, and yes..you'll benefit from an X-pipe, picking up some HP (YMMV as to how much, but generally 10-15), and a reduction of interior noise.
Let me know if I can be of help.
Fuzzy... you need to get a measurement of the tube size used, and yes..you'll benefit from an X-pipe, picking up some HP (YMMV as to how much, but generally 10-15), and a reduction of interior noise.
Let me know if I can be of help.
Burning Brakes
Joined: Dec 2001
Posts: 777
Likes: 1
From: Fort Worth Texas
Robert, I have advised several LT4 owners about your X pipe after we exchanged email two months ago ( I purchased a used 2 1/2 Borla SS for my 96 LT4) put me on your list for a X pipe when your production run is in. As I kept my stock LT4 cat back.
Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
Originally Posted by RacerX70CC
I'Ve got a direct-fit resonator replacement X-pipe in development, but it's not ready to ship out yet. The manufacturer has made a run of them for me, but they're not done to the specs I sent them (pipes are too far apart). I created them because there is no 2-3/4" X-pipes made by any manufacturer (I sold out of the original run of LTX-pipes), and further..there's no resonator replacement pipe made. Hopefully I'll have them ready by the holidays for those of you who would benefit from it.
Fuzzy... you need to get a measurement of the tube size used, and yes..you'll benefit from an X-pipe, picking up some HP (YMMV as to how much, but generally 10-15), and a reduction of interior noise.
Let me know if I can be of help.
Fuzzy... you need to get a measurement of the tube size used, and yes..you'll benefit from an X-pipe, picking up some HP (YMMV as to how much, but generally 10-15), and a reduction of interior noise.
Let me know if I can be of help.
Do you have an idea on much they will cost?
Melting Slicks
Joined: Dec 2001
Posts: 2,437
Likes: 1
From: Gainesville Fl
Originally Posted by Corvette Kid
Since the LT4 already has an H pipe, you won't get the dramatic change that a system with no crossover would get. If you are already sans mufflers and take the resonator off, that sucker's gonna be loud! 
You probably won't score any points with your neighbors.
You probably won't score any points with your neighbors.Will it really add that much of a difference in volume at idle if i replace the resonator with an X pipe? When i added my headers it got a lot louder when i opened it up but it didnt get any louder at idle or when just cruising. Will replacing a resonator with an X pipe make it louder even at idle or only when the throttle is opened up?
Safety Car
Joined: Feb 2003
Posts: 3,849
Likes: 95
From: Springfield MO
Originally Posted by RacerX70CC
I'Ve got a direct-fit resonator replacement X-pipe in development, but it's not ready to ship out yet. The manufacturer has made a run of them for me, but they're not done to the specs I sent them (pipes are too far apart). I created them because there is no 2-3/4" X-pipes made by any manufacturer (I sold out of the original run of LTX-pipes), and further..there's no resonator replacement pipe made. Hopefully I'll have them ready by the holidays for those of you who would benefit from it.
Fuzzy... you need to get a measurement of the tube size used, and yes..you'll benefit from an X-pipe, picking up some HP (YMMV as to how much, but generally 10-15), and a reduction of interior noise.
Let me know if I can be of help.
Fuzzy... you need to get a measurement of the tube size used, and yes..you'll benefit from an X-pipe, picking up some HP (YMMV as to how much, but generally 10-15), and a reduction of interior noise.
Let me know if I can be of help.
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Verdad Gallardo
Le Mans Master
Joined: Nov 2002
Posts: 7,080
Likes: 0
From: Corvette valley Georgia
St. Jude Donor '06
I have a Dr gas X pipe on my 92 lt1 with a auto trans and the 2.52 end gears! What I have noticed is the the torque curve moved about 500 rpms up ( this is the seat of pants dyno) Along with this set up I also have Dyno max super turbo mufflers.
Now the exhaust system is a but too quite as the x pipe will remove some sound ( as stange as it seems) and I have zero resonance.
My next step is flow master delta 50s maybe that willhelp and get some "tone" back in it.
Now the exhaust system is a but too quite as the x pipe will remove some sound ( as stange as it seems) and I have zero resonance.
My next step is flow master delta 50s maybe that willhelp and get some "tone" back in it.
Thread Starter
Race Director
Joined: Oct 2001
Posts: 19,653
Likes: 428
From: Melbourne Florida
Cruise-In IV Veteran
Originally Posted by RacerX70CC
I'Ve got a direct-fit resonator replacement X-pipe in development, but it's not ready to ship out yet. The manufacturer has made a run of them for me, but they're not done to the specs I sent them (pipes are too far apart). I created them because there is no 2-3/4" X-pipes made by any manufacturer (I sold out of the original run of LTX-pipes), and further..there's no resonator replacement pipe made. Hopefully I'll have them ready by the holidays for those of you who would benefit from it.
Fuzzy... you need to get a measurement of the tube size used, and yes..you'll benefit from an X-pipe, picking up some HP (YMMV as to how much, but generally 10-15), and a reduction of interior noise.
Let me know if I can be of help.
Fuzzy... you need to get a measurement of the tube size used, and yes..you'll benefit from an X-pipe, picking up some HP (YMMV as to how much, but generally 10-15), and a reduction of interior noise.
Let me know if I can be of help.
Burning Brakes
Joined: Jun 2005
Posts: 1,113
Likes: 35
From: LaUgH, mOrE!
Originally Posted by Corvette Kid
It's a Magnaflow dual in and out muffler. I believe it's a 5 x 8 inch oval or maybe 5 x 9. Check their website under universal mufflers and you'll find several options. This is their narrowest oval dual in and out and is available in 2 1/2 and 3 inch. It fits in the tunnel nicely in the stock LTx resonator location.
Instructor
Joined: Oct 2006
Posts: 233
Likes: 3
From: Franklin indiana
Originally Posted by Corvette Kid
It's a Magnaflow dual in and out muffler. I believe it's a 5 x 8 inch oval or maybe 5 x 9. Check their website under universal mufflers and you'll find several options. This is their narrowest oval dual in and out and is available in 2 1/2 and 3 inch. It fits in the tunnel nicely in the stock LTx resonator location.
Icouldn't find any mention of a muffler w/ built in x pipe, just dual in/out, anyway, did it quiet it down much? I have a 90 w/ headers, x pipe, no cats, borla mufflers. I have a GM HOT cam, and it is pretty loud. I was thinking of replacing the x with a Dynomax Ultra flo x. I had heard Magnaflow had one too, but can't find any info on it. Would a dual in/out be as good as an x?
Melting Slicks
Joined: Nov 2004
Posts: 2,799
Likes: 2
From: Cape Coral FL
Tru-X muffler is good, however....
The dual in dual out integral Tru-X muffler from Magnaflow will not fit without modifying the exhaust (the inlets and outlets are 1-1/2 further apart than the OEM resonator). Further, the LTX exhaust is 2-3/4", so you have to cobble up or down to fit it yet again. If you're building a new exhaust system from scratch (beyond the abilities of most forum members for many reasons), then I'd say it's a good choice. not that I'm trying to dissuade anyone from using it, I'm not... I sell them myself (being an authorized Magnaflow dealer), but in this application, it's just not a good fit.
Further on LT4 exhausts... the LT4 system has an "H" style crossover just ahead of the rear bends, making the fitment of the Tru-X muffler that much more difficult. The "H" crossover is nothing more than a 1" hole drilled in each pipe, with a 1.25" pipe connecting them (hardly worth the effort), but you have to cut and splice this back together, along with the hanger brackets, in order for the Tru-X to be installed. Unless you've got access to material and a welder (or have a good friend at the muffler shop who's competent), you're going to end up with a "less than ideal" result.
Carry on
Further on LT4 exhausts... the LT4 system has an "H" style crossover just ahead of the rear bends, making the fitment of the Tru-X muffler that much more difficult. The "H" crossover is nothing more than a 1" hole drilled in each pipe, with a 1.25" pipe connecting them (hardly worth the effort), but you have to cut and splice this back together, along with the hanger brackets, in order for the Tru-X to be installed. Unless you've got access to material and a welder (or have a good friend at the muffler shop who's competent), you're going to end up with a "less than ideal" result.
Carry on
Last edited by RacerX70CC; Nov 7, 2006 at 10:00 AM.
Burning Brakes
Joined: Jun 2005
Posts: 1,113
Likes: 35
From: LaUgH, mOrE!
Originally Posted by RacerX70CC
The dual in dual out integral Tru-X muffler from Magnaflow ...
Pro
Joined: Aug 2004
Posts: 623
Likes: 1
Originally Posted by Fuzzy Dice
When I bought my car the previous owner had removed the cats and pre cats and everything else...he put in long tubes into straight pipes going back to stock mufflers...the sound is very good and I get a lot of compliments and questions about my exhaust...
I don't have any type of crossover at this time, H or X...I am not looking for HP just a little increase in TQ...I don't even know what size pipe is on my car but I'd guess 2 3/4"...I have no resonance presently and would hope an X pipe won't cause any...how it sounds does not matter to me but it happens, as I've said, to sound mean already...lol
I don't have any type of crossover at this time, H or X...I am not looking for HP just a little increase in TQ...I don't even know what size pipe is on my car but I'd guess 2 3/4"...I have no resonance presently and would hope an X pipe won't cause any...how it sounds does not matter to me but it happens, as I've said, to sound mean already...lol