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I am still numb after seeing the numbers and more so after what a little tunning did. Keep in mind this is still my stock block http://users.ev1.net/~rhugh/Alex%20Dyno1.jpg
I am pretty happy about the results. The base run was done at 9 psi and the final now rest at 12 psi. Can you say hello to 11's if I can keep my tranny and axles in one piece [img]biggrin.gif[/img] ???
Alex,
Those numbers are amazing...
I do see some suspect information there that I hope you can clarify:
1) WHY did you use the "DIN" scale to post your numbers ??? Doesn't this scale show HIGH numbers ???
2) The date on the bottom of the dyno sheet says these were done in 1995 !!! What is up with that ??? Also, it also shows that you did 16 pulls in ONE HOUR !!! Where did you find time to tune in between ???
DAMN!!!! Nice numbers!!
<BLOCKQUOTE><font size=2 face="Verdana, Helvetica, sans-serif">quote:</font><table border="0" width="90%" bgcolor="#333333" cellspacing="1" cellpadding="0"><tr><td width="100%"><table border="0" width="100%" cellspacing="0" cellpadding="2" bgcolor="#FF9900"><tr><td width="100%" bgcolor="#DDDDDD"><font size=2 face="Verdana, Helvetica, sans-serif"><font size=2 face="Verdana, Helvetica, sans-serif">Originally posted by JRCivic:
Alex,
Those numbers are amazing...
I do see some suspect information there that I hope you can clarify:
1) WHY did you use the "DIN" scale to post your numbers ??? Doesn't this scale show HIGH numbers ???
2) The date on the bottom of the dyno sheet says these were done in 1995 !!! What is up with
that ??? Also, it also shows that you did 16 pulls in ONE HOUR !!! Where did you find time to tune in between ???</font></font></td></tr></table></td></tr></table></BLOCKQUOTE>
1) I have no clue as to what you are talking about.. I don't know jack about dyno's. This is what Richard at Strickly Perfomance had it set to. This is the first time I have ever dyno'd.
2) My only guess is that he never adjusted the time/date since he bought the dyno jet. As for the 16 pulls, that is indeed what happened. The car was never turned off except for 2 times for a very short while to double check everything was still fine. It probably got a little heat soaked but it's all good. The tunning was done between runs using Speed Pro. One thing of intrest was the vtec point. I moved it from 4600 to 3000 and it fell on it's face, moved it to 5200 and it worked beautifully. Notice everything smoothened out.
<font color="#a62a2a" size="1">[ March 05, 2002 11:33 PM: Message edited by: gsrev ]</font>
Shouldnt the dyno operator be able to recreate the charts using SAE instead of DIN?
Ask if he can, SAE is the standard which you see in 95% of dyno plots.
Can someone explain the difference between DIN and SAE to me, and how big is the difference usually as far as the numbers go?
And where does STD fall?
DIN correction produces slightly higher HP numbers than SAE.
STD correction produces even higher HP numbers than DIN.
It is because of the temperature and barometric pressure the different formulas use. i.e. STD corrects to a colder temperature than SAE, so the resulting HP number is higher.
Greg,
My understanding is that DIN creates grossly over-optomistic results. Cars back in the late 60's and 70's used the DIN scale to generate HP numbers... and this usually created what was supposed to be at the CRANK without accessories !!!
STD and SAE are actually VERY close. In fact, I viewed the numbers on the JRSC Prelude graphs Saturday and I found a 1.3 HP difference between the two... and SAE was actually HIGHER !!! I have heard in some cases that STD is higher... I guess I do not understand how the correction factors differ.
i have a number of the run files from the dynojet, and with their runviewer you can see the difference in correction factors. on my second trip to the dyno, the run shows :
uncorrected : 219whp
DIN : 214 whp
STD : 216 whp
EEC : 207 WHP
SAE : 207 WHP
during this run, the ambient air temperature was about fifty degrees, resulting in corrected numbers lower than the uncorrected, to varying degrees. when i got the JRSC put on, it was warm out, and the run showed the following :
uncorrected : 199
DIN : 204
STD : 211
EEC : 201
SAE : 201
come to you own conclusions....
<BLOCKQUOTE><font size=2 face="Verdana, Helvetica, sans-serif">quote:</font><table border="0" width="90%" bgcolor="#333333" cellspacing="1" cellpadding="0"><tr><td width="100%"><table border="0" width="100%" cellspacing="0" cellpadding="2" bgcolor="#FF9900"><tr><td width="100%" bgcolor="#DDDDDD"><font size=2 face="Verdana, Helvetica, sans-serif"><font size=2 face="Verdana, Helvetica, sans-serif">Originally posted by JRCivic:
Greg,
My understanding is that DIN creates grossly over-optomistic results. Cars back in the late 60's and 70's used the DIN scale to generate HP numbers... and this usually created what was supposed to be at the CRANK without accessories !!!
STD and SAE are actually VERY close. In fact, I viewed the numbers on the JRSC Prelude graphs Saturday and I found a 1.3 HP difference between the two... and SAE was actually HIGHER !!! I have heard in some cases that STD is higher... I guess I do not understand how the correction factors differ.</font></font></td></tr></table></td></tr></table></BLOCKQUOTE>
<font color="#a62a2a" size="1">[ March 07, 2002 03:21 AM: Message edited by: schwett ]</font>
WOW !!! This is VERY interesting...
I wonder if you can take a recorded dyno pull and view it in ALL modes (correction factors) listed above ???
If this is possible, I would like to re-run the dyno graphs of the Prelude to see what the other results were...
I got my info on correction factors straight from Dynojet when I was considering opening a dyno shop.
The corrected SAE from the dyno ended up putting my car at 326 hp. Oh well. [img]biggrin.gif[/img]
Well Alex...
CONGRATULATIONS are in order !!!
Your car kicks ass.
Now, go make a 1/4 mile pass and let us know what kind of timeslips 326 HP create...
WOW!!!
Man that is some AWESOME power! Hmmm... I might have to go turbo...hehehe