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+--- Thread: Post your Dyno results, pictures, etc! (/showthread.php?tid=5809)
- Maengelito - 04-18-2007
BLINGMW Wrote:It would be my GUESS that wheel weight would matter 0, or almost 0. Also, look at our runs, they were +/- 5HP each time, so 7 is only slightly above this noise. And there should be a few HP in engine oil alone, maybe you're running a heavier oil than he was? For example:
<!-- m --><a class="postlink" href="http://silkoleneshop.com/products/oil/engine/15250021.html">http://silkoleneshop.com/products/oil/e ... 50021.html</a><!-- m -->
They showed 7HP difference in oil alone (and yes, they're trying to sell a product, but from what I understand their findings are on par with others)
i would think that wheel weight would matter though. this dyno measures the power your motor can put to the edge of your tires and spin the rollers. everything inbetween (ie: the drivetrain) will have an effect, true? i mean correct me if i'm wrong, which is why i'm asking the question, but it makes sense in my head.
as for the discrepancies in all my runs, i think that its even worse considering that the first run was the lowest. lets say the previous owner had dyno'ed at 122. that means his highest was probably 122, so lets say like 119 +/-3hp. mine shows a high of 115, so lets average it at 113 +/-2. my concern is where did i lose that 6-7hp in the span of less than a year?
- l33t Mr2 - 04-18-2007
when did you change all the ignition components last?
- WRXtranceformed - 04-18-2007
You guys didn't read in to everything I wrote
Horsepower TV did a before / after dyno of a Camaro where they swapped out all the car's vital fluids (oil, trans, etc.) to *I think* Royal Purple synthetic and they showed a gain of about 12hp over their baseline IIRC. No other factors were changed.
Now, that is on an LS engine which is truly a gift from God. I can't imagine a Miata reacting that well to something so simple, but the point I was making is that it *is* possible to gain a bit of horsepower by swapping to high quality synthetic fluids.
- D_Eclipse9916 - 04-18-2007
Maeng, on a dyno like the dynojet, yes you can see horsepower discrepancies like that for switching wheels, especially if they are that much heavier. It really makes you wonder, why the hell do we even have dynos? Mustangs read notoriously high, dynojets low, and hell dynapacks dont even account for the wheels! They are bolted onto the hubs. Thats why I really dont find the need/want to put my car on the dyno. My car makes what it makes, maybe 110 horsepower, maybe 1000, My view on how fast it is, is that once its tuned, itll be fast enough.
- BLAIR - 04-18-2007
mang.. its all the differences in dynos.. dont sweat it.. different brand dynos can read up to a 15 percent difference.. I use to see a 7hp jump or gain in my VW when it was a 4 bangger all the time, I use to dyno for the fun of it cause we had one at the shop to play with. it made 120 whp so its more in the same HP range
- Maengelito - 04-19-2007
thanks guys, that was the reassurance i was hoping for.
- Jeff - 04-19-2007
Maengelito Wrote:thanks guys, that was the reassurance i was hoping for.
I still beat you. :lol: :wink:
- .RJ - 04-19-2007
Maengelito Wrote:thanks guys, that was the reassurance i was hoping for.
Yes, you're still gay for owning 2 miatas at the same time.
- Maengelito - 04-19-2007
TurboOmni08 Wrote:Maengelito Wrote:thanks guys, that was the reassurance i was hoping for.
I still beat you. :lol: :wink:
i had the lowest number of the day. everyone beat me. i'll be sure to start tivoing dateline: to catch a predator so we can see the van in action
- Jeff - 04-19-2007
I'm always on the prowl...but I never get caught.
- CaptainHenreh - 04-19-2007
TurboOmni08 Wrote:
![[Image: Hanson_dateline.jpg]](http://pr0n.encyclopediadramatica.com/images/5/57/Hanson_dateline.jpg)
"We'll get you one of these days."
- Steve85 - 04-20-2007
D_Eclipse9916 Wrote:Maeng, on a dyno like the dynojet, yes you can see horsepower discrepancies like that for switching wheels, especially if they are that much heavier. It really makes you wonder, why the hell do we even have dynos? Mustangs read notoriously high, dynojets low, and hell dynapacks dont even account for the wheels! They are bolted onto the hubs. Thats why I really dont find the need/want to put my car on the dyno. My car makes what it makes, maybe 110 horsepower, maybe 1000, My view on how fast it is, is that once its tuned, itll be fast enough.
Yipper...
They are great tuning tools but results need to be verified in the real world. It doesn't matter what the HP is, if you make adjustments while on the dyno that net gains you are going in the right direction.
The best example was a buddy who is in PA that is ntorious for getting everything out of a combo. His 434 powered 3400# Vette dynoed at 399...ran 10.1x@135MPH.
- WRXtranceformed - 04-20-2007
That's a hell of a driver mod right there!
- D_Eclipse9916 - 04-20-2007
pretty good driver, it makes me laugh at the stock cobras when they are on track tho, This one guy did a 15.1 at 123mph, I was like OMG.
- ScottyB - 04-20-2007
D_Eclipse9916 Wrote:pretty good driver, it makes me laugh at the stock cobras when they are on track tho, This one guy did a 15.1 at 123mph, I was like OMG.
sounds like one of Travis's runs with the old GS-T
i kid, i kid
- Dave - 04-20-2007
in terms of using dynos, I agree that the actual numbers really are pretty worthless. However, they are great for tuning a car to make sure you are getting the most out of it.
In terms of determining if your mods are doing anything, you really need to just stick with the same dyno and keep going back. Find a local one, do a baseline run, do some mods, do a pull, do some mods, etc. This will give you an accurate reading of how much your mods are actually doing for your car since it is the same one every time; i.e. you've eliminated the measurement variable and all that is left is your car.
- BLAIR - 04-20-2007
D_Eclipse9916 Wrote:Maeng, on a dyno like the dynojet, yes you can see horsepower discrepancies like that for switching wheels, especially if they are that much heavier. It really makes you wonder, why the hell do we even have dynos? Mustangs read notoriously high, dynojets low, and hell dynapacks dont even account for the wheels! They are bolted onto the hubs. Thats why I really dont find the need/want to put my car on the dyno. My car makes what it makes, maybe 110 horsepower, maybe 1000, My view on how fast it is, is that once its tuned, itll be fast enough.
I DONT THINK SOOOOO...Its pretty much common knowledge that Dynojets read higher then everything. Superflo's DynoDyanmins, and Mustangs all read much moer accurately. Of cpurse It's all comes down to the operator. If they dial it in correct then they "should" all read the same... Unfortunately this is a time consuming process, and most operators don't take the time to do so.
- WRXtranceformed - 04-20-2007
Your car looks the coolest when its on a DynaPack :lol:
- D_Eclipse9916 - 04-20-2007
BLAIR Wrote:D_Eclipse9916 Wrote:Maeng, on a dyno like the dynojet, yes you can see horsepower discrepancies like that for switching wheels, especially if they are that much heavier. It really makes you wonder, why the hell do we even have dynos? Mustangs read notoriously high, dynojets low, and hell dynapacks dont even account for the wheels! They are bolted onto the hubs. Thats why I really dont find the need/want to put my car on the dyno. My car makes what it makes, maybe 110 horsepower, maybe 1000, My view on how fast it is, is that once its tuned, itll be fast enough.
I DONT THINK SOOOOO...Its pretty much common knowledge that Dynojets read higher then everything. Superflo's DynoDyanmins, and Mustangs all read much moer accurately. Of cpurse It's all comes down to the operator. If they dial it in correct then they "should" all read the same... Unfortunately this is a time consuming process, and most operators don't take the time to do so.
Hahah thanks Blair for calling me out :oops: ...I Was hoping no one would catch it. You must remember these are all correction factors, but there are so many different problems with dynos that you cant really say its accurate. Why do you think you dont full spool until later in the rpm range than you do on the street? Load..Why do you think you dont get as much air, because you arent moving.. Even when they are fine-tuned they are all different between dynos, I know a lot have corrections factors for humidity, air temperature, blah bl, but they are still gonna be off. The only correct way is to to back to back dyno runs and thats only to see what you have gained.
- NTIman - 04-21-2007
Who is to say that a dynojet is inaccurate just because it reads high?
Like everyone else has said, its a comparison too in the first place, and track times and real world driveability are the dick swinging material.