Anyone has the Z1 intake plenum mod?
03-05-2014, 11:29 AM
#18
Registered User
i dont have it backwards im not going by what Z1 post for there Plenum against the M370..the stock plenum is what im comparing the M370 with on my car...
the stock plenum is great down low and stucks up top..
M370 lacks down low but picks up mid-range and on..
My car stock plenum vs M370...any questions?
the stock plenum is great down low and stucks up top..
M370 lacks down low but picks up mid-range and on..
My car stock plenum vs M370...any questions?
03-05-2014, 01:43 PM
#20
i guess no polishing service
i hope it's not as bad as it looks in those pictures. it must have been just a porting job not polishing or even use some finer bits. they probly took too much time to stick the Z1 logo. lol
03-05-2014, 11:42 PM
#21
Registered User
Z1's respond to the hate at 370z forum
We wanted to chime in on this since you guys have some concerns regarding the roughness and methods used to produce these plenums. We have put in a ton of hard work and dyno time testing many different configurations to find the best performing modification.
We have been doing this work locally for over a year we recently decided to make it a service available globally. Before we decided to do this we tested 8 different configurations with back to back testing on the dyno to refine the port work we do. Targeting the most consistent, and maximum gains based around our 400HP package.
For our dyno testing reference it is worth noting that when we perform these test back to back but we put a couple pulls in between the runs we show, because the car cools off when we swap the parts and it has to get back up to temp to make the same similar/equivalent power.
We have tested smooth and rough finishes on the same ported out plenum to see if any gains were to be had and no measurable distinction could be found however the difference in labor time was extensive, a smooth finish with no power to be had would come at a much higher cost. We already spend 3 hours per plenum removing extensive material from targeted locations and then work to refine the finish.
From a plenum to plenum standpoint we have found that there is quite some range in the accuracy of assembly. Having worked with many of these parts now it is not uncommon to see some where the two halves are put together accurately and the runner unions are reasonably smooth with not much overhang or "lip", while other plenums will have a distinctive shift or twist where they are assembled. So each plenum is worked by hand as needed some need only moderate matching and porting while others need quite a bit more labor. In the end they make great power and we are offering with an exchange service to keep the down time to a minimum.
Tuning cars with the mod has become weekly occurrence for us here and the P mod has never let us down.
We wanted to chime in on this since you guys have some concerns regarding the roughness and methods used to produce these plenums. We have put in a ton of hard work and dyno time testing many different configurations to find the best performing modification.
We have been doing this work locally for over a year we recently decided to make it a service available globally. Before we decided to do this we tested 8 different configurations with back to back testing on the dyno to refine the port work we do. Targeting the most consistent, and maximum gains based around our 400HP package.
For our dyno testing reference it is worth noting that when we perform these test back to back but we put a couple pulls in between the runs we show, because the car cools off when we swap the parts and it has to get back up to temp to make the same similar/equivalent power.
We have tested smooth and rough finishes on the same ported out plenum to see if any gains were to be had and no measurable distinction could be found however the difference in labor time was extensive, a smooth finish with no power to be had would come at a much higher cost. We already spend 3 hours per plenum removing extensive material from targeted locations and then work to refine the finish.
From a plenum to plenum standpoint we have found that there is quite some range in the accuracy of assembly. Having worked with many of these parts now it is not uncommon to see some where the two halves are put together accurately and the runner unions are reasonably smooth with not much overhang or "lip", while other plenums will have a distinctive shift or twist where they are assembled. So each plenum is worked by hand as needed some need only moderate matching and porting while others need quite a bit more labor. In the end they make great power and we are offering with an exchange service to keep the down time to a minimum.
Tuning cars with the mod has become weekly occurrence for us here and the P mod has never let us down.
03-06-2014, 10:48 AM
#22
Z1's respond to the hate at 370z forum
We wanted to chime in on this since you guys have some concerns regarding the roughness and methods used to produce these plenums. We have put in a ton of hard work and dyno time testing many different configurations to find the best performing modification.
We have been doing this work locally for over a year we recently decided to make it a service available globally. Before we decided to do this we tested 8 different configurations with back to back testing on the dyno to refine the port work we do. Targeting the most consistent, and maximum gains based around our 400HP package.
For our dyno testing reference it is worth noting that when we perform these test back to back but we put a couple pulls in between the runs we show, because the car cools off when we swap the parts and it has to get back up to temp to make the same similar/equivalent power.
We have tested smooth and rough finishes on the same ported out plenum to see if any gains were to be had and no measurable distinction could be found however the difference in labor time was extensive, a smooth finish with no power to be had would come at a much higher cost. We already spend 3 hours per plenum removing extensive material from targeted locations and then work to refine the finish.
From a plenum to plenum standpoint we have found that there is quite some range in the accuracy of assembly. Having worked with many of these parts now it is not uncommon to see some where the two halves are put together accurately and the runner unions are reasonably smooth with not much overhang or "lip", while other plenums will have a distinctive shift or twist where they are assembled. So each plenum is worked by hand as needed some need only moderate matching and porting while others need quite a bit more labor. In the end they make great power and we are offering with an exchange service to keep the down time to a minimum.
Tuning cars with the mod has become weekly occurrence for us here and the P mod has never let us down.
We wanted to chime in on this since you guys have some concerns regarding the roughness and methods used to produce these plenums. We have put in a ton of hard work and dyno time testing many different configurations to find the best performing modification.
We have been doing this work locally for over a year we recently decided to make it a service available globally. Before we decided to do this we tested 8 different configurations with back to back testing on the dyno to refine the port work we do. Targeting the most consistent, and maximum gains based around our 400HP package.
For our dyno testing reference it is worth noting that when we perform these test back to back but we put a couple pulls in between the runs we show, because the car cools off when we swap the parts and it has to get back up to temp to make the same similar/equivalent power.
We have tested smooth and rough finishes on the same ported out plenum to see if any gains were to be had and no measurable distinction could be found however the difference in labor time was extensive, a smooth finish with no power to be had would come at a much higher cost. We already spend 3 hours per plenum removing extensive material from targeted locations and then work to refine the finish.
From a plenum to plenum standpoint we have found that there is quite some range in the accuracy of assembly. Having worked with many of these parts now it is not uncommon to see some where the two halves are put together accurately and the runner unions are reasonably smooth with not much overhang or "lip", while other plenums will have a distinctive shift or twist where they are assembled. So each plenum is worked by hand as needed some need only moderate matching and porting while others need quite a bit more labor. In the end they make great power and we are offering with an exchange service to keep the down time to a minimum.
Tuning cars with the mod has become weekly occurrence for us here and the P mod has never let us down.
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Dylan37x (03-07-2022)
03-06-2014, 01:49 PM
#24
Your kidding me right? LOOK AT THE DYNO you posted in post #12!!!!!! It loses power where you use power the most with lowend/midrange, and then has gains at the very peak. It clearly even states on their website that its this exact results. Not only that, with their "smoothing" effect of their dyno results, the exact gains can be seen simply from tuning your car with different a/f ratios.
Absolute waste of money IMO.
M370 - Gain midrange and lose very top end
Z1 manifold - a few gains but mostly losses throughout the entire powerban except the very peak spike.
Last edited by 1cleanG; 03-06-2014 at 02:01 PM.
03-06-2014, 02:16 PM
#25
this is non tuned.. they would be no point in putting up a dyno with a non-tuned Stock to a Tuned M370 Plenum..
My Car is tuned now..but this dyno is the first few pull's on the Dyno with the M370 and only Raised rev limiter..i was running the M370 for about a year before i had my car tuned
03-06-2014, 05:46 PM
#26
Registered User
Your kidding me right? LOOK AT THE DYNO you posted in post #12!!!!!! It loses power where you use power the most with lowend/midrange, and then has gains at the very peak. It clearly even states on their website that its this exact results. Not only that, with their "smoothing" effect of their dyno results, the exact gains can be seen simply from tuning your car with different a/f ratios.
Absolute waste of money IMO.
M370 - Gain midrange and lose very top end
Z1 manifold - a few gains but mostly losses throughout the entire powerban except the very peak spike.
Absolute waste of money IMO.
M370 - Gain midrange and lose very top end
Z1 manifold - a few gains but mostly losses throughout the entire powerban except the very peak spike.
I don't think it loses power in the midrange like you state. It gains power in the midrange vs the stock mani. The m370 is still the winner but at least with a ported stock one you come close to matching the m370. Again you still lose the midrange fight but you beat it in the top range. It all depends on what you want to spend, if you care about a measly few single digits in the mid, and what you want up top.
And I can't exactly see from that mess of lines which is which in the midrange. Funny you agree with me mostly but chuckie311 completely disagrees.
Last edited by Synolimit; 03-06-2014 at 06:00 PM.
03-06-2014, 05:50 PM
#27
Registered User
this is non tuned.. they would be no point in putting up a dyno with a non-tuned Stock to a Tuned M370 Plenum..
My Car is tuned now..but this dyno is the first few pull's on the Dyno with the M370 and only Raised rev limiter..i was running the M370 for about a year before i had my car tuned
My Car is tuned now..but this dyno is the first few pull's on the Dyno with the M370 and only Raised rev limiter..i was running the M370 for about a year before i had my car tuned
03-06-2014, 05:57 PM
#28
Registered User
Here's a stock vs m370 and what I normally see and like I've said...m370 has the mid range but up top it loses. So the z1 gets "some" of the mid back and keeps the top end.
Last edited by Synolimit; 03-06-2014 at 06:02 PM.
03-06-2014, 06:07 PM
#29
Registered User
i dont have it backwards im not going by what Z1 post for there Plenum against the M370..the stock plenum is what im comparing the M370 with on my car...
the stock plenum is great down low and stucks up top..
M370 lacks down low but picks up mid-range and on..
My car stock plenum vs M370...any questions?
]
the stock plenum is great down low and stucks up top..
M370 lacks down low but picks up mid-range and on..
My car stock plenum vs M370...any questions?
]
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KImChee (05-08-2023)
03-10-2014, 12:35 PM
#30
got both the Z1 plenum and Stillen Gen 3 installed this weekend. Took about 3 hours, everything is straightforward and bolts on perfectly. The plenum I got was clearly from a 370z because the mounting screws for the engine cover are at the top instead of bottom. Engine cover still fits fine with no issue.
I will get a retune from Orisis this weekend and will update this thread again with hopefully some good gain.
I will get a retune from Orisis this weekend and will update this thread again with hopefully some good gain.
The following users liked this post:
Solidus (07-30-2014)