Supercharged 2004 AT RX8 Dyno numbers.
.
08-24-2012, 11:06 AM
#30
Registered
Great job guys and you too Ray! Now me next, me next! 
Saving my pennies for next summer install.
Thanks for working out all the kinks Phil and Dondo!
Cant wait to see/hear it next month Phil.
Saving my pennies for next summer install.
Thanks for working out all the kinks Phil and Dondo!
Cant wait to see/hear it next month Phil.
took it to Ray, Todd and Tony 
. They keep gaining on my magic number. 
08-27-2012, 09:56 AM
#36
Original Turbo 'd Auto !!
Thank you sur!
08-29-2012, 06:47 PM
#39
3-wheeler
Join Date: Dec 2005
Location: Phoenix
Posts: 2,734
Likes: 0
Received 0 Likes
on
0 Posts
The primary issue with using MAF numbers as a pure figure of measurement is every custom tuned RX8 has the MAF calibration adjusted for tuning purposes.
For example, in some early troubleshooting with Phil's car, it was necessary to totally jack the MAF calibration to see if I could squeeze any additional fuel from the injectors. The PCM thought it was seeing 400 g/s of air which was FAR from the actual value.
In this case, the WHP output is the only non-adjusted figure that can be relied upon. On average, I've seen information suggesting that the RENESIS produces .9 whp per gram of air per second. That puts Phil around the 292 g/s range (in theory).
Mass airflow does have plenty of applications by which it serves as the superior measurement of power generation (the whole airflow vs. boost argument) but we don't gain much additional knowledge of the car's performance beyond what the dyno graph shows.
For example, in some early troubleshooting with Phil's car, it was necessary to totally jack the MAF calibration to see if I could squeeze any additional fuel from the injectors. The PCM thought it was seeing 400 g/s of air which was FAR from the actual value.
In this case, the WHP output is the only non-adjusted figure that can be relied upon. On average, I've seen information suggesting that the RENESIS produces .9 whp per gram of air per second. That puts Phil around the 292 g/s range (in theory).
Mass airflow does have plenty of applications by which it serves as the superior measurement of power generation (the whole airflow vs. boost argument) but we don't gain much additional knowledge of the car's performance beyond what the dyno graph shows.
08-30-2012, 10:45 AM
#41
just out of curiosity, do you honestly think that my unported NA engine makes 234 rwp? I'd call BS on this too because I'm not stating anything in this thread that doesn't also apply to my RX8 as well as this or any other one. A more realistic number is under 0.85 and probably closer to 0.80. Note that I don't post or otherwise ballyhoo any of my past or present dyno graphs since about 3 or 4 years ago ....
you also have to remember that driving a supercharger requires a significant amount of HP, especially at high rpm. In this case the actual rear wheel output per g/s of mass air flow will be even less ...
my intention is not to fight, but sometimes this is necessary to cut through the bull, fantasy, or lack of understanding
you also have to remember that driving a supercharger requires a significant amount of HP, especially at high rpm. In this case the actual rear wheel output per g/s of mass air flow will be even less ...
my intention is not to fight, but sometimes this is necessary to cut through the bull, fantasy, or lack of understanding
08-31-2012, 08:28 AM
#42
No, it is obvious that you do look for any confrontation that is available and while I have no problem with you calling me a lier I do have a problem with you calling my friends liars. Every thing that was done to my car is out in the open and all engine mods were done by highly respected members of this forum.
Why don't you just start your own thread as I am sure that it would be successful and that you would have a thousand followers and maybe some one else to call out. The only trouble is that you would have to acquire an original thought.
Why don't you just start your own thread as I am sure that it would be successful and that you would have a thousand followers and maybe some one else to call out. The only trouble is that you would have to acquire an original thought.
08-31-2012, 11:53 AM
#43
Original Turbo 'd Auto !!
No, it is obvious that you do look for any confrontation that is available and while I have no problem with you calling me a lier I do have a problem with you calling my friends liars. Every thing that was done to my car is out in the open and all engine mods were done by highly respected members of this forum.
Why don't you just start your own thread as I am sure that it would be successful and that you would have a thousand followers and maybe some one else to call out. The only trouble is that you would have to acquire an original thought.
Why don't you just start your own thread as I am sure that it would be successful and that you would have a thousand followers and maybe some one else to call out. The only trouble is that you would have to acquire an original thought.
08-31-2012, 10:20 PM
#44
3-wheeler
Join Date: Dec 2005
Location: Phoenix
Posts: 2,734
Likes: 0
Received 0 Likes
on
0 Posts
Anyone who has experience with tuning or dynometers knows full well that calibration can impact your readings even with SAE correction. That is why it is important to use the same dyno as much as possible for any power gain measurements because otherwise your results are skewed.
As a noted above, Phil's reported MAF readings are most likely not correct. I can't say with any certainty because we don't have any independent method to review them. We can deduce the approximate value but that is all it is. Notice I was careful to mention "(in theory)" since we are well aware of the variables and don't tout ourselves as the final authority on this matter. A characteristic I see that isn't shared.
We posted the dyno because we wanted to show the work that has been done on Phil's car and because we thought the community would be interested. All we are about, in the end, is the satisfaction of the customer.
08-31-2012, 10:50 PM
#45
weeeeeeeeee
iTrader: (12)
great #s Phil !!! would love to be there myself and still have a ways to go... but OMW.
In regards to all the noise that I skimmed over (mostly due to the fact that a certain individual is on my ignore list and I can now choose if I want to be spun up rather that have it thrown in my face) I need to go look up Pedantic. I l-o-v-e new words
In regards to all the noise that I skimmed over (mostly due to the fact that a certain individual is on my ignore list and I can now choose if I want to be spun up rather that have it thrown in my face) I need to go look up Pedantic. I l-o-v-e new words
09-01-2012, 07:28 AM
#46
09-01-2012, 12:32 PM
#48
^My bad. I saw 300whp earlier, mistook it for a goal, but I see now that it was just a encouragement from a forum member.
09-01-2012, 08:57 PM
#50
3-wheeler
Join Date: Dec 2005
Location: Phoenix
Posts: 2,734
Likes: 0
Received 0 Likes
on
0 Posts
I'm sure we will see some future updates for Phil's RX8.
