dwpers...ask them to send you the Dynojet run file. You want the actual Runfile_003.drf and Runfile_004.drf. With the runfile, you can open it in the Dynojet WinPEP run viewer (available here: Dynojet Research Inc. - Software - Downloads). I notice your dyno run is UNCORRECTED, meaning they didn't apply any atmospheric correction factor. It is common practice to use the SAE correction factor here in the states. You can choose to use this correction factor when you view your run in the viewer software.

FYI, with the conditions shown, the SAE correction would have been .96 or 96% of uncorrected/measured power. With that correction, your car now shows a SAE corrected value of 239hp...about average, if not just a touch on the low side, for what I have seen on the internet for 3.8's.

Even though the car was making 249 that day, for comparison sake, you really want to look at SAE corrected power numbers, especially when you go back to re-dyno in different conditions with your modifications.

Also, they should have easily been able to connect the primary inductive pickup (included with the dyno), to one of the wires on the coil pack for RPM pickup. That would have given you torque.

 

Thank you for the reply. So my HP is ~ to be expected it seems. I don't know why they told me they couldn't do torque. I will call them and ask for the run files.

I appreciate your response.

 

Well their dyno guy "left for the day" so I have to wait until Monday .

 

Wow, anyone who has used Windows Explorer can copy a file. There's nothing special about it...just like copying a picture or any other file.

 

Those aren't bad numbers. Sure they're not insanely outstanding but you're almost stock.

Throw a hair dryer on there and watch those numbers climb.

 

All Dynos read torque, HP is calculated from that. How fast you can turn the drum from one rpm to another. HP is work performed. I would not use that guy again.

What kind of dyno and who was it i dont want to take my car there? LOL They should not need to connect anything to your car sep for tach signal and a few sensors to make sure the engine is safe and a kill switch for saftey. The car has no way of mesuring torque. Sounds like they didnt have a proper rpm sensor in which case they couldnt take numbers at all. HP or anything else. I take it they wanted to cut the wire for the first coil pak. Not a good idea. I live right outside of dc I will aks around see if anyone knows a proper shop with a dyno.

 

Actually vcompton, you're incorrect. A Dynojet inertia dyno measures HP as Force * Acceleration, and can CALCULATE torque given an RPM signal. Because of this, a Dynojet dyno can always show HP vs. Speed or time, and then offer torque, gear ratios, etc when RPM is collected.

 

@DynojetResearch

The shop owner is a lying prick to begin with. I only went there because it's 5 mins from my work.

I'm getting dyno'd again tomorrow but at a different shop and I'll be running with my NSPP and lightweight pully.

@vcompton

Shop info is on dyno sheet.

 

Wow are these dyno tech people suppose to be train on this equipment? Seems like Joe Shmoe put your car on the rollers and hit the gas.

 

what gear??

numbers are different in 4th and 5th gear. if you're stock i assume you pulled in 5th like i did. i always wondered why i got 250 and everyone else got 265+ but alot of the early dyno sheets were 4th gear pulls.

 

DynojetResearch You got me i was going to put in there unless its a fluid dyno. But only you me and a hand full of other know these things.

You sure thats not just software. Dynojets are fluid pumps or a resistants. If its resistants to moving its torque. Hp is work perfromed over time.

What is force if not torque.... Your equation uses a variable that does not compute. lol I was thinking all dynojets were torque driven. But i could be wrong.

Please excuse me if im wrong just want to know for my own knowledge. Also excuse mme bad spelling im american... LOL

 

DynojetResearch You got me i was going to put in there unless its a fluid dyno. But only you me and a hand full of other know these things.

You sure thats not just software. Dynojets are fluid pumps or a resistants. If its resistants to moving its torque. Hp is work perfromed over time.

What is force if not torque.... Your equation uses a variable that does not compute. lol I was thinking all dynojets were torque driven. But i could be wrong.

Dynojet dynos are inertia based...the car spins a large, heavy drum/roller under the tire. The drum has a known mass (inertia). Force = mass * acceleration. Acceleratio is speed change / time. We measure the speed change and time frame. Force is the only unknown.

 

Diapers, I'm glad you are doing this. I got called away for work and couldn't get my dyno done on Wed. Now that you are doing it, I won't. Guess I will have to buy you a beer for saving me money!!

Thanks Dood!

 

I should note that this dyno was with the RRM short ram intake only. Not the pulley and NSPP, Those will be dyno'd tomorrow.

@krak3n-h3adzz I accept beer money through paypal haha.

 

Thats what mes has too.

 

Would my tires being 5psi under recommended affect the performance on the dyno?

 

Some, but probably fairly slight. Less pressure means a flatter contact patch, possibly more contact and frictional losses. We're talking only 1-2hp max at 5psi low, unless we're talking from 15psi to 10psi.

 

krak3n-h3adzz I just realized you called me Diapers lol...thanks

 

oint: Thats what I see, when I see your name! LOL!

 

Umm... HP=(torque*rpm)/5252.....this is why dyno graphs should always have the torque and Hp curves crossing at 5252rpm so you can find your torque at a given rpm by using this formula and solving for torque. Thus by solving at varying rpm increments and plotting them you can find your torque curve

 

Conversely, Torque = (HP*5252) / RPM The equation works either way. If there is one known and one unknown, you can always do the math. Since a Dynojet dyno MEASURES HP, that's known. Torque can only be solved for IF you have RPM data. No RPM, no torque value.

 

I've been to many dyno shops where the idiot running the place couldn't even hook up my car right...and then was claiming my tune was shitty because my clutch was slipping. But it was a honda place....go figure their clutches don't slip because they have no torque haha.

 

lol about the honda joke, this happened at my tuner shop after i installed the CMD. Before i got the CMD installed i had done 3 pulls stock and 3 pulls with RRM's intake and a TBE, and all six times the dyno guy was able to pull my torque numbers, After i got the CMD installed it took him 6 tries to get the tq done right. Either way i only paid for three pulls because he said he knew he messed up. I trust the guy and he has a good reputation but it just baffles me sometimes.

 

Yes this was a Honda place, and the tuner was a Honda guy... :-/

Updated original post with video.

 

Wow....my bad. Sorry for stating the obvious. Now I want to learn something: Why the hell would you have a dyno graph WITHOUT rpm?

 

Broken inductive RPM pickup...coil on plug and no primary sized inductive pickup, RF noise interference, too lazy...

:hello:

 

Yeah that's too bad....I'd take it somewhere else for sure.

 

I didn't know the shop was like this before I did the dyno. Now I do...

-_-

 

As you are probably looking for a baseline, why not go back at the same place? Tell him to hock up correctly next time.

Be careful hacking those coilpack wires, it was badly done at my dyno by the tech and it caused 1 flatbed ride and 1 ride to the dealer on limp.