I can see the discrepancy there, but really its so hard to pinpoint why since they are 2 totally different dynos and were all done on differnet days? Its just one of those unexplained issues of dyno tuning, which is why its just not always the best means of comparison when trying to figure out why one guy did this and another did this.... 1/4 mile times will tell the story of who is making actual big power and who made big power on a dyno?

I would def. take your car to sbr and see what there dyno reads with your buschur tune? Maybe there dyno was having issues that day or something, who knows?

Plus the IX's are seriously crazy when modded, you can spend way less and get a much bigger gain over an VIII. That has been proven for sure. Which is why I showed Buschur dyno'd at 299whp with a BR350. I mean basically 300 whp with a IC pipes, 2.5" dp, 3" catback, and stock cat with air filter and BR tune? Thats pretty impressive when you add that up cost wise.....

 

Thats why i m waiting to hear from dan(steelcity) just to compare what his numbers are on br mustang. We have all the same mods but he went on a much better day. I m going back to sbr for sure to see if im higher than the 451 i put up with nates tune on pump. When i just put the 3076r on i made 395whp on sbr dyno. with cams it went 451whp.

 

Well I don't know what you want me to say? I mean, I have no reason to lie about what happened on each day. All I can tell you is what I saw.

My first run on SBR was 342 and second baseline was 326 (I believe those were the numbers - and not sure why they were so different), which was my tune from Al from August - the same that made 307 at Buschur with a baseline of 242. To be honest, I expected lower at Buschur, but then since I came in so high there, I was expecting higher at SBR. If I were to guess, SBR is more than likely the one that was correct. By correct, I mean what the dyno normally reads. I do know that Nate seemed pretty happy with my numbers since all I have are the TBE, MBS, cone filter, Walbro, and 50/50 meth.

If I remember correctly, I actually think I remember Dave Buschur posting the week after I was there about the results of the Shootout and stating that he thought his dyno was running higher numbers than normal, which would obviously explain a lot. I can't remember where he posted it though if someone wants to go back and look it up - should have been somewhere in the August 10-17th timeframe. All I really cared about at Buschur was to get the hell out of there after screwing up my radiator and having to pay for a new one! LOL So all that mattered to me was that I gained 60+WHP!

I do know that I like the SBR tune much better than Al's The car sounds better and runs smoother, so I'm happy with it. And regardless of what numbers you go by, I gained more power.

 

Thats all that matters here as well. Nate is the is one of the best at tuning. Like I said im happy for everyone. I want the pgh scene to be big. SBR is going to help with the build of my new crazy drag setup.

 

You cannot compare a 65K Mustang Dyno to a 120K Dyna-pack when it comes to consistency and accuracy.

For instance, if you made 330 WHP on a Mustand Dyno, but run 120 MPH trap speeds, do you think for one second your only making 330 WHP in a 3300 LB car?

STI Killer, looking forward to your trip back, I am anxious to see what the numbers say myself

http://www.slowboyracing.com/dynogra...oix/evo470.jpg

Mike Huml

 

My chart is on your website already hafe kit pump gas and cams....http://www.slowboyracing.com/dynogra...451HafeKit.jpg So you think im really closer to 451whp than 340whp mike?

 

Well I have no problem telling anyone I made 361 at SBR, I'm very proud of it, and extremely happy. So glad SBR is around here and not hours away!

 

Its the same?

If you take the same tune....same day.....side by side.....Dyno on a mustang at 340whp. Then unhook and setup on a dynapack and lay down 450whp. Then unhook and go to the track eventhough those numbers are that different you will net the exact same 1/4 mile time. Thats why dyno numbers in the end dont mean ****. The track proves it all.

The dyno gives you a comparison to tune so you know what changes are good vs. bad. Thats why you always need to go back to the same dyno when making changes, so you can see the actual gains that are made.

Its the same with dyno software on a logger.....yes its not accurate to a real life dyno but if you make changes and see that logger dyno increase in power you know that change helped and made the car more powerful?

 

HAHAHA +1 Travis

 

I agree with your statement, yes.

I am no math major, but that is about 25% lower than my dyno's readings.

For instance, Nates car last year would run 145-146 MPH on our dyno that was a 650 WHP tune on his car. At a 25% loss, that would put me at 487 WHP.... I know 487 WHP even in a 2500 LB car would not run 145 MPH traps, especially with Nate driving (Sorry Nate, you are getting better).... so yes, I would say most Dyno Jets or Dyna Packs will give you very accurate readings.

My favorite dyno is obviously Dyna Pak, however the Dyno Dynamics is a very close second, and even this dyno is known to only be about 8-10% lower than mine.

Mike Huml

 

Dyno numbers tell you how the car performs, 1/4 mile MPH and ET tell you how the driver performs in a particular car.

So, the track only proves how good of a driver you are, and the only time you should not compare dyno numbers are one dyno to another, or on a different day!

Mike Huml

 

Ok so you take the same car, same tune, same day....Dyno 340 on a mustang, then dyno 450 on a dynapack. Go to the track with the same driver and the car runs the same trap speeds? Power is identical but the "power numbers" are different.....??

Its the same amount of power, its just 2 different dynos putting out 2 different numbers but in the end the track times prove the car is making an estimated amount of power.

A dyno shows calculated and measured numbers......track times and trap speeds will show performance in the end, 120 mph is 120 mph whether one dyno says 340whp or the other shows 450hp.

People can fudge dynos to make bigger numbers but on the track they might not fair quite as well? which shows that car isnt making the power that the dyno showed.


BTW, there is finally some discussion going on....I like it

 

hey me and a coulpe of my friends are going to cruise around tonight and take some pics of our cars down town, if any one wants to join up we are going around 9 and you can pm me if you want to know were

luke

 

Whats funny is
buschur loves his mustang dyno?
SBR likes the dynapack?
Other places like dynojet?

I mean how can we set a level of performance by a measured number when differnet tuners prefer different devices? The dyno is a great tool no doubt, but unless you stay with the same dyno when making changes you prove nothing and it turns into assumptions until you take it to the track and see the actual gains come alive....which is proven through track times/speed

Thats my understanding?

 

Track proves exactly what the driver and his car at the same time are made of. A lot of the reason to having certain dynos is because of money. Dynos are great but take into consideration that all dynos read differently, some higher, some lower. So dyno numbers while they do mean something. The can mean **** when you have 2 people comparing numbers from a dynapack to a mustang to a dynojet. However i'm sure we all have known these basics.

However i wish there was a better alternative that became the standard for all dyno testing. Cars are not made out of 2 different measuring systems now are they? So why are there 3 ways to measure whp (other than the money factor)... None is the true answer. Hopefully, one day, there will be a standard.


Steve
GnV Motorsports