Just dynoed my 02 with Cantrell duct / Kn filter ! Results :

[Modernceo]

Just dynoed my 02 with Cantrell duct / Kn filter ! Results :

Just wanted to share the results with everyone. If you have a 97+ and have dyno results you can post to compare Id appreciate it !

 

[Duffer]

I have a 97. I would like to attach my dyno image, but it is just over 117KB and the file limit is 97KB. Last summer, before some mods, my car clocked in at 284.1 HP and 206.3 ft. lbs. torque. After Comptech headers, exhaust and high flow cats plus a Cantrell air intake were added, I am now up to 315.2 HP and 228.6 ft. lbs. of torque. I am a happy camper. I am in the process of a few more upgrades that focus in on weight reduction, so we will see what happens with overall performance.

 

[The Kid]

Just dynoed my 02 with Cantrell duct / Kn filter ! Results :

Just wanted to share the results with everyone. If you have a 97+ and have dyno results you can post to compare Id appreciate it !

My 92 bone stock but down 252 hp :tongue:Ill see if I can find the chart.

 

[Modernceo]

I have a 97. I would like to attach my dyno image, but it is just over 117KB and the file limit is 97KB. Last summer, before some mods, my car clocked in at 284.1 HP and 206.3 ft. lbs. torque. After Comptech headers, exhaust and high flow cats plus a Cantrell air intake were added, I am now up to 315.2 HP and 228.6 ft. lbs. of torque. I am a happy camper. I am in the process of a few more upgrades that focus in on weight reduction, so we will see what happens with overall performance.

Nearly 30 hp with headers and exhaust. Thats mighty impressive.

I was under the impression that I wouldnt gain much by doing headers, but youve made me curious with your supposed hp numbers !

 

[The Kid]

Nearly 30 hp with headers and exhaust. Thats mighty impressive.

I was under the impression that I wouldnt gain much by doing headers, but youve made me curious with your supposed hp numbers !

From what ive heard headers dont make a big +/- on 2002-current NSX's.... I still think those #'s are low for an 02 with the AIS

 

[NSXWIND]

Nearly 30 hp with headers and exhaust. Thats mighty impressive.

I was under the impression that I wouldnt gain much by doing headers, but youve made me curious with your supposed hp numbers !

Maybe the discrepancy has to do with dyno machine? I have heard that some car dyno 300HP on one dyno machine and dyno 250HP on different dyno machine. Don’t know why, maybe due to the difference of measure unit?

 

[Modernceo]

From what ive heard headers dont make a big +/- on 2002-current NSX's.... I still think those #'s are low for an 02 with the AIS

I dont think its low, I think its right on spot. a 10% drivetrain loss off of 287 is exactly 258, which is right where my car is. Are there any other 02+ 3.2's to compare to that would show what your talking about ?

 

[Duffer]

Maybe the discrepancy has to do with dyno machine? I have heard that some car dyno 300HP on one dyno machine and dyno 250HP on different dyno machine. Don’t know why, maybe due to the difference of measure unit?

My car was dyno'd at a very reputable tuner in the Detroit area. In fact, the Big 3 regularly bring by skunk works project cars to this shop and insist on a very accurate dyno. I believe these numbers are very accurate.

 

[Doc C]

From what ive heard headers dont make a big +/- on 2002-current NSX's.... I still think those #'s are low for an 02 with the AIS

I have heard this too, about the 2002+ cars. I don't understand why, if the headers were changed to be more low restriction, the HP numbers didn't increase somewhat from 2002 on. I would love to save myself the $$ on headers and just put on the exhaust and intake. I have been told that new headers would give minimal results if any results on a 2002+ NSX.

ModernCEO,
Thanks for sharing your info. Forget the dyno, do you notice a significant "seat of the pants" improvement??? Does the intake improve the sound quite a bit?? Enjoy and congrats!!!

 

[D'Ecosse]

Nearly 30 hp with headers and exhaust. Thats mighty impressive. !

Different days, different ambient conditions, 9 months later - who knows what has happened with the dyno in the interim, or the corrections that were applied; just as the relative numbers between these two pulls on the same car are meaningless because of indeterminate variables, even more so are those from anyone else for comparison, when entirely different dynos, conditions, operator etc., etc., apply.
These measurements are not absolute - there is a significant degree of variability - only way for a somewhat meaningful comparison is with back-back runs on same dyno, same day, same conditions, same corrections etc.

p.s. I'm certainly not buying the 30hp delta as being an accurate change - I also am not buying the 315 absolute number either!

 

[ANYTIME]

Different days, different ambient conditions, 9 months later - who knows what has happened with the dyno in the interim, or the corrections that were applied; just as the relative numbers between these two pulls on the same car are meaningless because of indeterminate variables, even more so are those from anyone else for comparison, when entirely different dynos, conditions, operator etc., etc., apply.
These measurements are not absolute - there is a significant degree of variability - only way for a somewhat meaningful comparison is with back-back runs on same dyno, same day, same conditions, same corrections etc.

p.s. I'm certainly not buying the 30hp delta as being an accurate change - I also am not buying the 315 absolute number either!

Proof of what D'Ecosse is saying.
My 2000 CTSC NSX dynos at Comptech (small dyno wheels on the ground) with 359RWHP. Then dynos at 280RWHP at a shop (Huge, lift the car up, above ground dyno) close to me, during a tuning session. Tuned in safely an additional 20RWHP and 20FPT out of it. So in theory, I would dyno at 379RWHP at comptech.

 

[Modernceo]

Right, I understand the degree of variance guys, Over the last two years Ive had over 300+ dyno runs of my various cars, no need to lecture me on that. But, the original poster didnt mention that it was xx months apart, and he didnt mention that it was at a different dyno location, etc. So, im assuming the timing isnt that far apart, and its the same location.

If the original poster would chime in and confirm this it would be awesome.

 

[D'Ecosse]

... But, the original poster didnt mention that it was xx months apart, and he didnt mention that it was at a different dyno location, etc....

I read it too literally re timing - i.e. "last summer" & "now"; now doesn't necessarily mean the re-run was just recently done I suppose. I don't doubt that duffer's were probably run on the the same dyno, the "different" was in respect to other comparative dynos that were requested from the initial post.
But nevertheless, the numbers, both absolute & differential remain suspiciously high to be accurate.

 

[Duffer]

I read it too literally re timing - i.e. "last summer" & "now"; now doesn't necessarily mean the re-run was just recently done I suppose. I don't doubt that duffer's were probably run on the the same dyno, the "different" was in respect to other comparative dynos that were requested from the initial post.
But nevertheless, the numbers, both absolute & differential remain suspiciously high to be accurate.

I suppose it is pointless to argue this much further. The same dyno that tested mine has had a number of stock NSX's tested and they have all posted results from 240 to 260 RWHP. My tuner was flabbergasted that I was so much higher than the other half dozen or so NSX's he has dyno'd. He even posted something on Prime last August to that effect.

I plan on having my car tested at a different shop in about a month and we will see what happens.

 

[D'Ecosse]

This thread is the one you referred to - I had seen this before & forgotten about it. Devin is a respected individual from all I read in these forums so I concede something definitely different about your particular car. It also appears that the tests were run back/back so any environmental/timing differences means that argument is also moot.

However, you didn't exactly mention the "beta" fuel management addition identified in Devin's post in your list of differences in your post above, so I still stand by my point about 30 hp differential from intake & exhaust mods only being unrealistic.

As far as this topic goes, in light of the comparative nature of the initial request it doesn't seem appropriate to just throw your numbers in there without any reference to the apparently atypical results your car apears to have. Or maybe you were just looking for bragging rights?

 

[SugrueNSX]

Just dynoed my 02 with Cantrell duct / Kn filter ! Results :

Just wanted to share the results with everyone. If you have a 97+ and have dyno results you can post to compare Id appreciate it !

It is an unfortunate fact of life that all dynos are not calibrated to the same standard. The differences can be so huge that it makes comparisons virtually meaningless. Therefore testing should be done on the same dyno and before and after numbers compared. Also variations in temp and humidity can make a big difference from day to day so they should also be taken into account. I’m guessing that tires make a difference too?

Regards,

Patrick

 

[Duffer]

This thread is the one you referred to - I had seen this before & forgotten about it. Devin is a respected individual from all I read in these forums so I concede something definitely different about your particular car. It also appears that the tests were run back/back so any environmental/timing differences means that argument is also moot.

However, you didn't exactly mention the "beta" fuel management addition identified in Devin's post in your list of differences in your post above, so I still stand by my point about 30 hp differential from intake & exhaust mods only being unrealistic.

As far as this topic goes, in light of the comparative nature of the initial request it doesn't seem appropriate to just throw your numbers in there without any reference to the apparently atypical results your car apears to have. Or maybe you were just looking for bragging rights?

As far as the "beta" fuel management add-on chip goes, Devin thought at best this would add 4-5 HP. Yes, I did forget to mention it - there was no deliberate intention to conceal this. So, factor that out and I am still producing 310 RWHP.

So, was I looking for bragging rights? Not really, but the original poster wanted to know what other 97+ NSX's were dynoing with basically the same mods I have. My results are atypical - is it a crime? Most folks would love to have my engine. Devin to this day still shakes his head trying to figure out why my car is so out of the norm.

 

[SugrueNSX]

As far as the "beta" fuel management add-on chip goes, Devin thought at best this would add 4-5 HP. Yes, I did forget to mention it - there was no deliberate intention to conceal this. So, factor that out and I am still producing 310 RWHP.

So, was I looking for bragging rights? Not really, but the original poster wanted to know what other 97+ NSX's were dynoing with basically the same mods I have. My results are atypical - is it a crime? Most folks would love to have my engine. Devin to this day still shakes his head trying to figure out why my car is so out of the norm.

If you are making 310 hp at the wheels then the ¼ ET should be equally spectacular and a ¼ of a mile is the same in every part of the world so then we could compare. As they say “The proof of the pudding is in the eating”

Regards,

Patrick

 

[Duffer]

If you are making 310 hp at the wheels then you ¼ ET should be equally spectacular and a ¼ of a mile is the same in every part of the world so then we could compare. As they say “The proof of the pudding is in the eating”

Regards,

Patrick

Since I don't track my car, this is not likely to happen.

 

[amgnsx]

I'm probably going to have my car Dynoed (is that a word) soon.
But for the mean time i have some info that i got a while back from SOS
See thread: 2004 Dyno

 

[Paul]

Cory,

Here is a dyno plot from my 91. The first graph is stock, second modified with E\H\I.

Stock: rwhp = 252, rwt = 190; E\H\I: rwhp = 268, rwt = 198

 

[John McCain Racing]

Here's mine with Comptech Headers, Taitec GT Lightweight Exhaust, Test Pipes and Dali Big Gulp Intake.