True dual vs x pipe - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

MrWray · 12-29-2013, 10:22 PM

I searched the forum for this discussion, I found a few threads but didnt really find the answer that I am looking for. Right now I have Doug Thorley 1 3/4" Tri Y headers, no cats, and im running true duals with flowmaster super 10s. I have read that with running true duals I am losing some HP and torque due to the lack of scavenging. Picking up some lost HP and torque sounds great, I also love the head turning eardrum bursting sound that I have now. I already have the magnaflow x pipe sitting in the box on my table, but here are my questions.

Will I really be gaining some HP and torque by adding the x pipe?

Will I lose some of my sound by adding the x pipe?

14pilot · 12-29-2013, 10:39 PM

Quote:

Originally Posted by MrWray

Will I really be gaining some HP and torque by adding the x pipe?

Will I lose some of my sound by adding the x pipe?

Gains won't be seat of the pants noticeable, but a small gain would likely show up on the dyno.

Yes, you will lose some sound and the sound will change from a classic V8 rumble to a modern V8 sound.

MrWray · 12-29-2013, 11:04 PM

Its just that I love the way it sounds now, im really just adding the x pipe to gain the little bit of power back. Ive kinda been 2nd guessing having the x pipe installed because I dont want to compromise my sound if im not gonna be able to drive the car and tell that I gained a little power.

14pilot · 12-29-2013, 11:34 PM

Well before everyone running a x-pipe jumps in here and tells you to run one because they are, I'd say if you love the sound you have, keep it.

You have an h-pipe in there now? If not, an h-pipe helps similar to the x-pipe. Many will say x-pipe is better but then do you really need a couple more HP up at 5000 rpms plus? How much time does your engine spend at max rpm? Do you care more about every last hp or the sound you have?

MrWray · 12-29-2013, 11:46 PM

Quote:

Originally Posted by 14pilot

Well before everyone running a x-pipe jumps in here and tells you to run one because they are, I'd say if you love the sound you have, keep it.

You have an h-pipe in there now? If not, an h-pipe helps similar to the x-pipe. Many will say x-pipe is better but then do you really need a couple more HP up at 5000 rpms plus? How much time does your engine spend at max rpm? Do you care more about every last hp or the sound you have?

I have the L99 so when I took out the resonator, its straight pipe all the way to the mufflers. Thats why I have been 2nd guessing the x pipe install. I mean, if I can truely tell a difference, even if its a small difference, it would be worth the little bit of sound loss.

axis · 12-29-2013, 11:48 PM

If you are running a true dual exhaust, meaning you've cut out the factory H pipe, you did lose some HP and Tq. Adding either a H or X pipe will bring back what you've lost. From what i've heard, the H pipe has more of a old school muscle sound where the X pipe has a little more modern muscle sound. There's not a BIG change in the sound, just a subtle one.

14pilot · 12-30-2013, 12:01 AM

Quote:

Originally Posted by axis

If you are running a true dual exhaust, meaning you've cut out the factory H pipe, you did lose some HP and Tq. Adding either a H or X pipe will bring back what you've lost. From what i've heard, the H pipe has more of a old school muscle sound where the X pipe has a little more modern muscle sound. There's not a BIG change in the sound, just a subtle one.

Good call. An h-pipe will keep the sound similar to what the OP has now.

MrWray · 12-30-2013, 12:02 AM

Quote:

Originally Posted by Tran

more

Correct, I have no h pipe

62nalide · 12-30-2013, 12:12 AM

An H-pipe or X-pipe is a must IMO, 3yrs we tested it on our free time on a dyno same day hours apart. This was on a 6.0L truck made 347rwhp 331rwtq with duals no cross over, 2hrs later with an H-pipe 351rwhp 337rwtq, 2hrs with an X-pipe made 354rwhp 340rwtq, 20min later 471rwhp 467rwhp with a lil nitrous lol.....
all runs done 2hrs apart on a 80* weather.

MrWray · 12-30-2013, 10:53 AM

X pipe is being installed as we speak

LS3 SS · 12-30-2013, 11:01 AM

I have an X pipe, and I will tell you that you are gonna waste time and money if you switch just to gain some power that you MAY not see on the dyno. Keep what you got.

Bo White · 12-30-2013, 11:10 AM

I have an X pipe because mainly of sound and its slightly more efficient than the H.

aggieguy13 · 12-30-2013, 11:35 AM

I have bbk off-road xpipe. It's a boss.

http://youtu.be/_Rf-xumCixY

patternpilot · 12-30-2013, 11:48 AM

OP,
So everyone who answered your question made comments about sound and power. No answer however gave a reason for the sound or power.

An X pipe reduces back pressure, thus giving you more power and torque. By having an X pipe some of the exhaust from one bank of cylinders can pass through the exhaust from the other bank, thus balancing out the backpressure..
With many factory mufflers they are pretty restrictive at higher rpm's, thus an X pipe.

You probably could measure the difference with a dyno, you wont notice it though. It helps with large displacement and forced induction motors because you are pushing a lot of air.
On a stock motor just go for the sound.

12-29-2013, 10:22 PM	#1
MrWray SYBIL Drives: 2013 2SS/RS, silver ice metallic Join Date: Oct 2012 Location: Oklahoma Posts: 1,444	True dual vs x pipe I searched the forum for this discussion, I found a few threads but didnt really find the answer that I am looking for. Right now I have Doug Thorley 1 3/4" Tri Y headers, no cats, and im running true duals with flowmaster super 10s. I have read that with running true duals I am losing some HP and torque due to the lack of scavenging. Picking up some lost HP and torque sounds great, I also love the head turning eardrum bursting sound that I have now. I already have the magnaflow x pipe sitting in the box on my table, but here are my questions. Will I really be gaining some HP and torque by adding the x pipe? Will I lose some of my sound by adding the x pipe? __________________ Last edited by MrWray; 12-29-2013 at 10:55 PM.

12-29-2013, 11:04 PM	#3
MrWray SYBIL Drives: 2013 2SS/RS, silver ice metallic Join Date: Oct 2012 Location: Oklahoma Posts: 1,444	Its just that I love the way it sounds now, im really just adding the x pipe to gain the little bit of power back. Ive kinda been 2nd guessing having the x pipe installed because I dont want to compromise my sound if im not gonna be able to drive the car and tell that I gained a little power. __________________

12-29-2013, 11:48 PM	#6
axis Search Ninja Drives: 2010 Black 2SS/RS A6 Join Date: Oct 2009 Location: Central Ark Posts: 7,183	If you are running a true dual exhaust, meaning you've cut out the factory H pipe, you did lose some HP and Tq. Adding either a H or X pipe will bring back what you've lost. From what i've heard, the H pipe has more of a old school muscle sound where the X pipe has a little more modern muscle sound. There's not a BIG change in the sound, just a subtle one. __________________ 2010 Black 2SS/RS A6 Halltech CF 102 fed GPI modded intake manifold Bo (knows) White ported TB Kooks LT's/ Dynomax VT Pfadted (springs/sways) Dyno tuned by Rhino and GPI I once parallel parked a train.

12-30-2013, 12:12 AM	#9
62nalide Drives: 2013 SS Join Date: May 2013 Location: DFW Posts: 4,102	An H-pipe or X-pipe is a must IMO, 3yrs we tested it on our free time on a dyno same day hours apart. This was on a 6.0L truck made 347rwhp 331rwtq with duals no cross over, 2hrs later with an H-pipe 351rwhp 337rwtq, 2hrs with an X-pipe made 354rwhp 340rwtq, 20min later 471rwhp 467rwhp with a lil nitrous lol..... all runs done 2hrs apart on a 80* weather. __________________ https://frankensteined.net/ Martin@Frankensteined.net

12-30-2013, 10:53 AM	#10
MrWray SYBIL Drives: 2013 2SS/RS, silver ice metallic Join Date: Oct 2012 Location: Oklahoma Posts: 1,444	X pipe is being installed as we speak __________________

12-30-2013, 11:01 AM	#11
LS3 SS Drives: 2010 Cyber Grey Camaro SS (LS3) Join Date: Mar 2010 Location: Clarksville TN Posts: 2,275	I have an X pipe, and I will tell you that you are gonna waste time and money if you switch just to gain some power that you MAY not see on the dyno. Keep what you got.

12-30-2013, 11:10 AM	#12
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,103	I have an X pipe because mainly of sound and its slightly more efficient than the H. __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter, stage 4 cam and Wilkes 11° 65cc heads Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

12-30-2013, 11:35 AM	#13
aggieguy13 Drives: 2013 SS/RS VR 1LE Join Date: Jun 2013 Location: MCKINNEY,TX Posts: 1,278 View My Garage	I have bbk off-road xpipe. It's a boss. http://youtu.be/_Rf-xumCixY __________________ 2013 SS/RS 1LE VR-Backup System, SOLO Perforsance HF Cats, Muffler Delete, BBK Off-road X-pipe 2002 35th Aniversary SLP SS-Sold

12-30-2013, 11:48 AM	#14
patternpilot Drives: 2012 2SS/RS Join Date: Aug 2011 Location: Tri-Cities WA. Posts: 934 View My Garage	OP, So everyone who answered your question made comments about sound and power. No answer however gave a reason for the sound or power. An X pipe reduces back pressure, thus giving you more power and torque. By having an X pipe some of the exhaust from one bank of cylinders can pass through the exhaust from the other bank, thus balancing out the backpressure.. With many factory mufflers they are pretty restrictive at higher rpm's, thus an X pipe. You probably could measure the difference with a dyno, you wont notice it though. It helps with large displacement and forced induction motors because you are pushing a lot of air. On a stock motor just go for the sound. __________________ There's more to life than gas mileage LS3, Whipple, Custom Comp Cam, springs, pushrods, timing set, CAI intake, Apex cold air scoop, Doug Thorley TRI-Y headers, Billet Custom Products baffled Valve covers, Mighty Mouse Catch can, ADM FPCM, ZL1 fuel pump, MSD boost-a-pump, Hex Vent hood vents, ProSport gauges(fuel pressure, AFR, Boost), Corsa, 100 cell Cats. Jannetty remote tuned, Pfadt trailing arms, all parts user installed. No Dyno yet. Manual trans. 3.45 gears.