Vortech tuned with Motordyne XYZ pipe and ART Pipes...interesting results
05-15-2010, 11:44 PM
#1
Vortech tuned with Motordyne XYZ pipe and ART Pipes...interesting results
I recently had my car re-tuned because I got a smaller pulley for my Vortech, and I also had isntalled a Motordyne XYZ pipe because I wanted the option of using the Motordyne Catalytic converter module for daily driver use, and using the resonated pipe or straight pipe modules for max power/track. Here is my setup:
-IPP Stage 2 Revup engine 9.5:1 Wiseco/Eagle and JWT S7R cams
-Vortech for Revup with 2.75" 928 Motorsports pulley and 928 Motorsports Impeller and 32/30 Cog setup on an Sc trim blower
-RC 750cc w/ CJM Stage 0 FRS
-Fluidampr pulley
-DC Sports Headers
-Motordyne MREV2 w/spacer
-Motordyne ART Pipes
-Motordyne XYZ (tested with straight pipe, resonated straight pipe, and Catalytic converter module)
-Amuse Exhaust
I also have a Snow Performance Meth kit, but it was malfunctioning because of a leak so I could not got for a full power meth tune...
So my initial tunes were with the XYZ and Motordyne resonated pipe and with the Motordyne straight pipe, and the tune numbers were about the same (~540 whp, 440 torque, see pic 1), the main difference between the two being the exhaust volume is lower with the resonated straight pipe.
I then installed the Motordyne Catalytic converter module with the XYZ, and then proceeded to tune, and I got a pleasant surprise, I actually gained hp and torque (570 whp, 450 torque, see pic 2)! BTW, all the dyno runs produced the same max boost, about 17.6psi (see pic 3).
Needless to say, my tuner and I were flabbergasted and were wondering what the heck was happening...but I wasn't going to complain because I prefer the quieter sound and having a catalytic converter, since I live in Socal and they're pretty strict about emissions around here (and you those of you guys with Vortech understand how loud the Vortech setup is exhaust wise and in general).
I thought about it after the fact and I remembered in the Vortech FAQ that the Vortech setup really dosen't need a ultra-free flowing setup; in fact you could lose hp if the exhaust is too free flowing (https://my350z.com/forum/3751833-post17.html). I discussed this with Tony at Motordyne, and he concurred as well.
Needless to say, I am quite happy with the fact that I can run with a quieter setup and a XYZ Catalytic Converter, and not have to swap it for the track. When I get the meth working properly I'll shoot for the moon and see what number I get!
And for those of you guys who are wondering, yes, the dynapack numbers are somewhat inflated; I will re-dyno the car on a dynojet to get a better baseline to compare with.
**UPDATE: Dynojet numbers are on page 5**
-IPP Stage 2 Revup engine 9.5:1 Wiseco/Eagle and JWT S7R cams
-Vortech for Revup with 2.75" 928 Motorsports pulley and 928 Motorsports Impeller and 32/30 Cog setup on an Sc trim blower
-RC 750cc w/ CJM Stage 0 FRS
-Fluidampr pulley
-DC Sports Headers
-Motordyne MREV2 w/spacer
-Motordyne ART Pipes
-Motordyne XYZ (tested with straight pipe, resonated straight pipe, and Catalytic converter module)
-Amuse Exhaust
I also have a Snow Performance Meth kit, but it was malfunctioning because of a leak so I could not got for a full power meth tune...
So my initial tunes were with the XYZ and Motordyne resonated pipe and with the Motordyne straight pipe, and the tune numbers were about the same (~540 whp, 440 torque, see pic 1), the main difference between the two being the exhaust volume is lower with the resonated straight pipe.
I then installed the Motordyne Catalytic converter module with the XYZ, and then proceeded to tune, and I got a pleasant surprise, I actually gained hp and torque (570 whp, 450 torque, see pic 2)! BTW, all the dyno runs produced the same max boost, about 17.6psi (see pic 3).
Needless to say, my tuner and I were flabbergasted and were wondering what the heck was happening...but I wasn't going to complain because I prefer the quieter sound and having a catalytic converter, since I live in Socal and they're pretty strict about emissions around here (and you those of you guys with Vortech understand how loud the Vortech setup is exhaust wise and in general).
I thought about it after the fact and I remembered in the Vortech FAQ that the Vortech setup really dosen't need a ultra-free flowing setup; in fact you could lose hp if the exhaust is too free flowing (https://my350z.com/forum/3751833-post17.html). I discussed this with Tony at Motordyne, and he concurred as well.
Needless to say, I am quite happy with the fact that I can run with a quieter setup and a XYZ Catalytic Converter, and not have to swap it for the track. When I get the meth working properly I'll shoot for the moon and see what number I get!
And for those of you guys who are wondering, yes, the dynapack numbers are somewhat inflated; I will re-dyno the car on a dynojet to get a better baseline to compare with.
**UPDATE: Dynojet numbers are on page 5**
Last edited by 350z006; 08-17-2011 at 11:41 PM.
05-16-2010, 07:29 AM
#4
That will be a lot of fun, just make sure it's well tuned with that stock block 
...and don't be tempted to push the boost too much like I did when I had my Si trim blower and my stock block; I eventually burned a piston ring pushing 13.5 psi...
...and don't be tempted to push the boost too much like I did when I had my Si trim blower and my stock block; I eventually burned a piston ring pushing 13.5 psi...
05-16-2010, 10:02 AM
#5
Registered User
iTrader: (11)
Join Date: Jan 2007
Location: Pembroke Pines
Posts: 1,912
Likes: 0
Received 0 Likes
on
0 Posts
If it makes too much boost or power I'm going to put a boost control valve. I'ld like to keep it no higher than 12psi. Also I want the benefit of getting into boost lower in the power band.
05-16-2010, 04:36 PM
#6
That's pretty cool. Install a catalytic converter on a FI revup engine and make more power.
It is interesting to see how there is an optimum point of back pressure for some FI applications. Too much blow by during intake/exhaust valve overlap can waste fuel/air charge by sending it right out the exhaust before it has a chance to be part of the cylinder combustion process.
At least when Naturally Aspirated on a relatively stock DE engine, there is no amount of back pressure that is beneficial for performance.
NA test results are posted here: https://my350z.com/forum/intake-exha...k-for-n-a.html
In any case, its great to see you can gain 30 HP by stuffing a cat in your exhaust!
It is interesting to see how there is an optimum point of back pressure for some FI applications. Too much blow by during intake/exhaust valve overlap can waste fuel/air charge by sending it right out the exhaust before it has a chance to be part of the cylinder combustion process.
At least when Naturally Aspirated on a relatively stock DE engine, there is no amount of back pressure that is beneficial for performance.
NA test results are posted here: https://my350z.com/forum/intake-exha...k-for-n-a.html
In any case, its great to see you can gain 30 HP by stuffing a cat in your exhaust!
Last edited by Hydrazine; 05-16-2010 at 05:24 PM.
Trending Topics
05-28-2010, 05:43 PM
#9
New Member
iTrader: (8)
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes
on
6 Posts
do you have upgraded bearings? that impeller is way overspun so i hope they are the abec 9's (ceramic)
what were the intake temps? after 14 psi on mine the intake temps would jump to 190 deg which is way too dangerous to tune to.
I would assume meth would have to be used past 14 psi due to the inefficient Sc blower pushing hot air up that fast.
what were the intake temps? after 14 psi on mine the intake temps would jump to 190 deg which is way too dangerous to tune to.
I would assume meth would have to be used past 14 psi due to the inefficient Sc blower pushing hot air up that fast.
05-28-2010, 07:04 PM
#10
Registered User
iTrader: (11)
Join Date: Jan 2007
Location: Pembroke Pines
Posts: 1,912
Likes: 0
Received 0 Likes
on
0 Posts
The ABEC 7 are rated up to 59K and the ABEC 9 62K. This info is available on superchargerrebuilds.com. I went with the ABEC 7 for my rebuild but I had it done a 928 Motorsports. With the 2.75 pulley he is still bellow 59K rpms.
05-28-2010, 11:00 PM
#11
The 928 impeller is rated to 60k rpm, so I am still in the efficiency threshold of the blower...read up on it at 928motorsports.com...
As for intake temps, my tuner didn't mention any issues to me when tuning; I do have a bigger intercooler rated to 550 hp, and as of right now I am running with NO meth since my setup is leaking, and the tune done above was done with no meth as well, stay tune for the meth numbers (no pun intended
)
I'll ask my tuner about the AIT's when I tune for meth; I do notice that when I go WOT my tuner set it conservatively since I was getting 11.2~10.9 AFR's...
Come to think of it, my EMS is uprev osiris and I do have the cable...can i download Cipher and log my AIT's that way?
As for intake temps, my tuner didn't mention any issues to me when tuning; I do have a bigger intercooler rated to 550 hp, and as of right now I am running with NO meth since my setup is leaking, and the tune done above was done with no meth as well, stay tune for the meth numbers (no pun intended
)I'll ask my tuner about the AIT's when I tune for meth; I do notice that when I go WOT my tuner set it conservatively since I was getting 11.2~10.9 AFR's...
Come to think of it, my EMS is uprev osiris and I do have the cable...can i download Cipher and log my AIT's that way?
do you have upgraded bearings? that impeller is way overspun so i hope they are the abec 9's (ceramic)
what were the intake temps? after 14 psi on mine the intake temps would jump to 190 deg which is way too dangerous to tune to.
I would assume meth would have to be used past 14 psi due to the inefficient Sc blower pushing hot air up that fast.
what were the intake temps? after 14 psi on mine the intake temps would jump to 190 deg which is way too dangerous to tune to.
I would assume meth would have to be used past 14 psi due to the inefficient Sc blower pushing hot air up that fast.
Last edited by 350z006; 05-28-2010 at 11:37 PM.
05-29-2010, 04:33 AM
#14
Registered User
iTrader: (11)
Join Date: Jan 2007
Location: Pembroke Pines
Posts: 1,912
Likes: 0
Received 0 Likes
on
0 Posts
He uses the same ones that Vortech uses, which are ABEC 7. If you send it to Vortech that's what they use unless you have a heavy duty blower such as a YSI trim. Those get the ABEC 9.
05-29-2010, 05:56 AM
#15
Any chance you can record a video or sound clip of your current setup with the Motordyne XYZ pipe and cat?
I was 1 click from ordering them last year but got andeal I couldn't refuse on my current exhaust. I've always wanted to know what it sounds like.
I was 1 click from ordering them last year but got andeal I couldn't refuse on my current exhaust. I've always wanted to know what it sounds like.
05-29-2010, 06:51 AM
#16
New Member
iTrader: (8)
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes
on
6 Posts
The 928 impeller is rated to 60k rpm, so I am still in the efficiency threshold of the blower...read up on it at 928motorsports.com...
As for intake temps, my tuner didn't mention any issues to me when tuning; I do have a bigger intercooler rated to 550 hp, and as of right now I am running with NO meth since my setup is leaking, and the tune done above was done with no meth as well, stay tune for the meth numbers (no pun intended)
I'll ask my tuner about the AIT's when I tune for meth; I do notice that when I go WOT my tuner set it conservatively since I was getting 11.2~10.9 AFR's...
Come to think of it, my EMS is uprev osiris and I do have the cable...can i download Cipher and log my AIT's that way?
As for intake temps, my tuner didn't mention any issues to me when tuning; I do have a bigger intercooler rated to 550 hp, and as of right now I am running with NO meth since my setup is leaking, and the tune done above was done with no meth as well, stay tune for the meth numbers (no pun intended
)I'll ask my tuner about the AIT's when I tune for meth; I do notice that when I go WOT my tuner set it conservatively since I was getting 11.2~10.9 AFR's...
Come to think of it, my EMS is uprev osiris and I do have the cable...can i download Cipher and log my AIT's that way?
Ok, i think we're talking about different things here. yes, the 928 impeller can do 60k rpms. I understand that. The bearings do 59k, understand that.
The inefficiency i'm talking about is the blower itself. The scroll is too small therefore at higher boost levels the air is being packed into a small area therefore increasing temps and making it ineffecient. It has nothing to do with the impeller or the bearings. It's the idea of running a 50mm turbo verses 70mm turbo. Which one is going to flow easier? the bigger one, which one will produce more power? the bigger one. Because of the increased flow of hte larger turbo the intake temps will be considerably less at the same boost level for a larger turbo.
that being said, the blower for the sc/si vortechs is the smallest vortech makes therefore restrictive. That is why guys can run the same boost pressure on a T-trim or Ysi trim and put out more hp. Same boost, more hp due to larger scroll and decreased restriction.
05-29-2010, 06:56 AM
#17
New Member
iTrader: (8)
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes
on
6 Posts
question, is that litle yellow line on the last graph the stock psi?
what was your psi with a stock impeller at those rpms? It looks like that 928 impeller raised boost quite a bit more than it claims. on a 2.87 i'm only pulling 14psi at 7700 rpms.....and that's overspinning the crap out of my blower.
what was your psi with a stock impeller at those rpms? It looks like that 928 impeller raised boost quite a bit more than it claims. on a 2.87 i'm only pulling 14psi at 7700 rpms.....and that's overspinning the crap out of my blower.
05-29-2010, 08:53 AM
#18
Gosh...I haven't had the stock dyno with the stock Sc trim blower for a long time....my last setup was with the Si trim blower...
I believe the yellow line was the tune with the 2.87 pulley...
I believe the yellow line was the tune with the 2.87 pulley...
question, is that litle yellow line on the last graph the stock psi?
what was your psi with a stock impeller at those rpms? It looks like that 928 impeller raised boost quite a bit more than it claims. on a 2.87 i'm only pulling 14psi at 7700 rpms.....and that's overspinning the crap out of my blower.
what was your psi with a stock impeller at those rpms? It looks like that 928 impeller raised boost quite a bit more than it claims. on a 2.87 i'm only pulling 14psi at 7700 rpms.....and that's overspinning the crap out of my blower.
05-29-2010, 09:51 AM
#19
ya my Si was doin 16 psi at 6500 rpms....
question, is that litle yellow line on the last graph the stock psi?
what was your psi with a stock impeller at those rpms? It looks like that 928 impeller raised boost quite a bit more than it claims. on a 2.87 i'm only pulling 14psi at 7700 rpms.....and that's overspinning the crap out of my blower.
what was your psi with a stock impeller at those rpms? It looks like that 928 impeller raised boost quite a bit more than it claims. on a 2.87 i'm only pulling 14psi at 7700 rpms.....and that's overspinning the crap out of my blower.