Baseline dyno = 294whp, what?
Baseline dyno = 294whp, what?
So I had a baseline dyno performed on my 08 Nismo. Only mod is a Fujitsubo axle-back exhaust. Does 294whp/266wtq sound a little odd to anyone?! I was expecting something around 270whp. The dyno was at Tim Bailey's Cobb/Surgeline shop in Portland, Oregon (a mustang dyno) which, if anyone knows, is no joke of an establishment. The pulls (3) were done in third gear. My friend's STI did a pull right after me and his numbers were right in line with where they should be.
Now I do not know enough about dynos, but are there weight, RPM, drag, gearing, etc attributes that you enter before the dyno pull that could significantly skew the numbers? I definitely feel the numbers are off, but I just do not understand how. Feedback?
Now I do not know enough about dynos, but are there weight, RPM, drag, gearing, etc attributes that you enter before the dyno pull that could significantly skew the numbers? I definitely feel the numbers are off, but I just do not understand how. Feedback?
Last edited by Nismo1534; Sep 13, 2010 at 03:36 PM.
As opposed to fourth? Oh, don't worry - they tried - which yielded 316whp....Now obviously these numbers are off - I am just curious as to how/why. And what makes a Mustang dyno accurate for an AWD STI, but not a Nismo? Thanks guys.
Last edited by Nismo1534; Sep 11, 2010 at 06:39 PM.
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No $hit, right? But can a dyno lie with one car and not another? Anyone know about drag or anything that they enter before a pull that skews numbers?
Correct. Same dyno. I do not understand how Mr. STI is dead accurate, months between pulls and my #'s are out of control. Our pulls the other day were literally back-to-back.
Correct. Same dyno. I do not understand how Mr. STI is dead accurate, months between pulls and my #'s are out of control. Our pulls the other day were literally back-to-back.
Last edited by Nismo1534; Sep 11, 2010 at 09:10 PM.
looks like OP wants to hear this...
OP you have freak of nature factory Z, somehow you are putting down almost 15% more power than your average HR Z. you sure are one lucky son of a gun. i think your Z just increased in value. im so jealous!!! most likely god himself blessed your car. in fact you should go buy a lottery ticket right now!!! just imagine if you dyno your Z during the winter!! you'll have 300whp with just catback exhaust!!! dont be surprised if Nissan wants your car to examine to see wtf they did right with it!!! OMGZ!!!
OP you have freak of nature factory Z, somehow you are putting down almost 15% more power than your average HR Z. you sure are one lucky son of a gun. i think your Z just increased in value. im so jealous!!! most likely god himself blessed your car. in fact you should go buy a lottery ticket right now!!! just imagine if you dyno your Z during the winter!! you'll have 300whp with just catback exhaust!!! dont be surprised if Nissan wants your car to examine to see wtf they did right with it!!! OMGZ!!!
looks like OP wants to hear this...
OP you have freak of nature factory Z, somehow you are putting down almost 15% more power than your average HR Z. you sure are one lucky son of a gun. i think your Z just increased in value. im so jealous!!! most likely god himself blessed your car. in fact you should go buy a lottery ticket right now!!! just imagine if you dyno your Z during the winter!! you'll have 300whp with just catback exhaust!!! dont be surprised if Nissan wants your car to examine to see wtf they did right with it!!! OMGZ!!!
OP you have freak of nature factory Z, somehow you are putting down almost 15% more power than your average HR Z. you sure are one lucky son of a gun. i think your Z just increased in value. im so jealous!!! most likely god himself blessed your car. in fact you should go buy a lottery ticket right now!!! just imagine if you dyno your Z during the winter!! you'll have 300whp with just catback exhaust!!! dont be surprised if Nissan wants your car to examine to see wtf they did right with it!!! OMGZ!!!
Last edited by Nismo1534; Sep 12, 2010 at 01:19 AM.
I will definitely have to call and ask! I wasn't sure if there was a 'standard' set of inputs for dynos or what. It sounds like there are too many variables at this point for anyone to make sense of this.
Yeah, I know - I'll ask Tim on Monday what the hell happened. I did some more research and I pulled this off Cobb's web page:
I have a feeling the dyno is either configured for Subies or I at least ran with Subaru attributes. I'll let everyone know what I find out on Monday.
We have noticed that comparing dyno graphs to other dyno graphs that we have recorded on the same chassis dyno is difficult to do. Several factors must be taken into account including gearing (both the ratio of the gear these tests were performed in and the final drive ratio), aerodynamics, testing conditions, parasitic drivetrain losses, etc.
The sti made the same whp on the same dyno at two different times.......thats normal. Now if he had dynoed on a different shop dyno and still came up with the same numbers you would have something significant but you dont.
Dynos are just measuring tools. The absolute number can be high or low depending on which dyno you use. What you really need to look for are the gains from power adders...the delta.