ART PIPES VS LTH (F.I or PPE)

Motordyne · 08-18-2011, 12:10 AM

Quote:

Originally Posted by Methodical4u

agree there... but headers will probably be the last mod I do... it's going to be to install the ART pipes, and then buy and install the XYZ pipe and then get a CBE. Then intakes... Perhaps Tony you all may have your intake finished or close to it?

By the way Tony, I was wondering... if I don't want a loud exhaust... and since the ART pipes obviously are not a hfc... would I be better with the XYZ with HFC or resonated? I guess resonated since I could always put my OE cats back on right?

Intake comes after the exhaust. As far as HFC Vs resonator on the XYZ pipe... I would suggest the HFC. HFC because it will at least clean up the smell. For some people this is important.

The smell of test pipes or ART pipes doesn't bother me at all but it is an issue for some. It depends a lot on your personal preference and smog regulations.

Methodical4u · 08-18-2011, 12:12 AM

Quote:

Originally Posted by Motordyne

Intake comes after the exhaust. As far as HFC Vs resonator on the XYZ pipe... I would suggest the HFC. HFC because it will at least clean up the smell. For some people this is important.

The smell of test pipes or ART pipes doesn't bother me at all but it is an issue for some. It depends a lot on your personal preference and smog regulations.

any idea of power gain on resonated vs hfc?

b1adesofcha0s · 08-18-2011, 07:55 AM

Quote:

Originally Posted by Motordyne

Intake comes after the exhaust. As far as HFC Vs resonator on the XYZ pipe... I would suggest the HFC. HFC because it will at least clean up the smell. For some people this is important.

The smell of test pipes or ART pipes doesn't bother me at all but it is an issue for some. It depends a lot on your personal preference and smog regulations.

Any idea how far you guys are from releasing the intakes? I was going to buy intakes sometime next year, probably around February for my birthday. Was going to go with the Stillen G3's, but if your's are being released sometime after that I will probably wait to see the results before making my purchase.

Motordyne · 08-18-2011, 12:17 AM

The XYZ HFC drops 3-4 HP relative to the XYZ resonator or XYZ straight pipe.
Normally a HFC would drop more than 3-4 HP relative to a test pipe but the XYZ HFC is so much farther away from the engine there is less pressure drop and power loss.

Methodical4u · 08-18-2011, 02:02 AM

Quote:

Originally Posted by Motordyne

The XYZ HFC drops 3-4 HP relative to the XYZ resonator or XYZ straight pipe.
Normally a HFC would drop more than 3-4 HP relative to a test pipe but the XYZ HFC is so much farther away from the engine there is less pressure drop and power loss.

losing power sucks

Motordyne · 08-18-2011, 09:11 AM

Quote:

Originally Posted by Methodical4u

losing power sucks

That's the cost of having a catalytic converter in the XYZ pipe.
Put that same catalytic converter into test pipes near the engine (like regular HFC's) and it drops 6+ HP.

ScGRaceR · 08-18-2011, 02:10 AM

NYBladeZ · 08-18-2011, 09:54 AM

Currently running F.I. LTH's with the GT Haus exhaust. I love it! Granted the LTH's won't work with a twin turbo setup but then again I don't know if the art pipes would either due to the increase in heat, maybe Tony can chime in on that.

Also Tony, I'm using the GTHaus front Y-pipe it comes out into a 3" collector that connects to the 2nd mid pipe, is your xyz resonated pipe also a 3" outlet? Also do you think I'll lose any hp if I went from the unresonated pipe to your resonated pipe?

Motordyne · 08-18-2011, 11:49 AM

Quote:

Originally Posted by NYBladeZ

Currently running F.I. LTH's with the GT Haus exhaust. I love it! Granted the LTH's won't work with a twin turbo setup but then again I don't know if the art pipes would either due to the increase in heat, maybe Tony can chime in on that.

Also Tony, I'm using the GTHaus front Y-pipe it comes out into a 3" collector that connects to the 2nd mid pipe, is your xyz resonated pipe also a 3" outlet? Also do you think I'll lose any hp if I went from the unresonated pipe to your resonated pipe?

Heat isn't a problem. Sometimes the EGT can actually be lower on FI because the optimum F/A ratio is typically much lower.

The XYZ outlet is 3.0" diameter and there is no loss at all with the resonator. I wouldn't be surprised if you made more power with the XYZ pipe.

NYBladeZ · 08-18-2011, 03:34 PM

Quote:

Originally Posted by Motordyne

The XYZ outlet is 3.0" diameter and there is no loss at all with the resonator. I wouldn't be surprised if you made more power with the XYZ pipe.

That's a bold statement, care to explain why you think that could happen?

AlphaSnacks · 08-18-2011, 10:47 AM

Has anybody ever dynoed LTH as their LAST mod as opposed to their 1st or 2nd? We all know that the first mod on our cars will always be the highest, no matter what it is and then it goes down from there.

I'd like to see someone with intake, exhaust, TP/ART/HFCs, and tune dyno their car before installing the LTH. I personally have a feeling, the difference won't be very big at all, especially if you're replacing the ART Pipes for LTH.

theDreamer · 08-18-2011, 10:51 AM

Quote:

Originally Posted by Arnold K.

Has anybody ever dynoed LTH as their LAST mod as opposed to their 1st or 2nd? We all know that the first mod on our cars will always be the highest, no matter what it is and then it goes down from there.

I'd like to see someone with intake, exhaust, TP/ART/HFCs, and tune dyno their car before installing the LTH. I personally have a feeling, the difference won't be very big at all, especially if you're replacing the ART Pipes for LTH.

The F.I. LTH thread has some a dyno result like that, so does Semtex in his journal.

chuckd05 · 08-19-2011, 12:47 AM

Quote:

Originally Posted by Arnold K.

Has anybody ever dynoed LTH as their LAST mod as opposed to their 1st or 2nd? We all know that the first mod on our cars will always be the highest, no matter what it is and then it goes down from there.

I'd like to see someone with intake, exhaust, TP/ART/HFCs, and tune dyno their car before installing the LTH. I personally have a feeling, the difference won't be very big at all, especially if you're replacing the ART Pipes for LTH.

I did, but it was with an addition of a flywheel and a tweaking of my tune that got rich for some reason, so its kind of a bad example... but i gained 21 whp but I think a lot came from how rich my car was when it went in there...

Motordyne · 08-19-2011, 02:30 PM

Quote:

Originally Posted by chuckd05

I did, but it was with an addition of a flywheel and a tweaking of my tune that got rich for some reason, so its kind of a bad example... but i gained 21 whp but I think a lot came from how rich my car was when it went in there...

How rich was it?

Methodical4u · 08-21-2011, 05:50 PM

Quote:

Originally Posted by chuckd05

I did, but it was with an addition of a flywheel and a tweaking of my tune that got rich for some reason, so its kind of a bad example... but i gained 21 whp but I think a lot came from how rich my car was when it went in there...

I'm curious how rich it was as well... 21 whp with the LTH's and a flywheel? I would have guessed a lot more than that... didn't the Berk HFC's make like 15 whp (granted I don't know if this was independent tested or not) on an otherwise stock car?

08-18-2011, 02:10 AM	#7 (permalink)
ScGRaceR Enthusiast Member Join Date: Mar 2010 Location: 33908 Posts: 382 Drives: 2010 Nismo,2008 R32 Rep Power: 17	Z_Enthusiast likes this. __________________ 2010 PW Nismo: GT-R Start / Stop \| Kenwood Navi / DVD \| Escort X50 \| F.I 18' CF \| F.I Resonated Test Pipes \| PasswordJDM \| Post MAF Tubes \| K&N Drop In's 297 RWHP 9/25/11 WTB SPARE RIM TIRE. PM ME

08-18-2011, 09:54 AM	#8 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 22	Currently running F.I. LTH's with the GT Haus exhaust. I love it! Granted the LTH's won't work with a twin turbo setup but then again I don't know if the art pipes would either due to the increase in heat, maybe Tony can chime in on that. Also Tony, I'm using the GTHaus front Y-pipe it comes out into a 3" collector that connects to the 2nd mid pipe, is your xyz resonated pipe also a 3" outlet? Also do you think I'll lose any hp if I went from the unresonated pipe to your resonated pipe? __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

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08-18-2011, 12:17 AM	#4 (permalink)
Motordyne Enthusiast Member Join Date: Nov 2008 Location: Los Angeles Posts: 384 Drives: Z Rep Power: 18	The XYZ HFC drops 3-4 HP relative to the XYZ resonator or XYZ straight pipe. Normally a HFC would drop more than 3-4 HP relative to a test pipe but the XYZ HFC is so much farther away from the engine there is less pressure drop and power loss.

08-18-2011, 10:47 AM	#11 (permalink)
AlphaSnacks A True Z Fanatic Join Date: Jan 2010 Location: Windermere, FL Posts: 1,618 Drives: '13 XKR-S, '10 370Z Rep Power: 20	Has anybody ever dynoed LTH as their LAST mod as opposed to their 1st or 2nd? We all know that the first mod on our cars will always be the highest, no matter what it is and then it goes down from there. I'd like to see someone with intake, exhaust, TP/ART/HFCs, and tune dyno their car before installing the LTH. I personally have a feeling, the difference won't be very big at all, especially if you're replacing the ART Pipes for LTH.