Power FC mapping results


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Why are yous all so against what i am saying? and what is all this saying its "pub talk" i'm not saying yous are wrong (i've listened to the points yous have made). My main point is that i feel dyno figures should be accurate, or accurate enough so you are not thinking something is wrong with the car!

And i have never seen a 10yr old civic lose horse power when it is as mint as the ek9 in this thread! thats why i was assuming that something was wrong if it has!
 
I will say it again - A dyno is as accurate as the person who sets up the car and dyno

i.e Short of taking your engine out of your car, it is impossible to get the accuracy that you require. This is why dyno's are not supposed to be used for dyno days, they are supposed to be used as tuning tools. There are just too many variables involved in a roller dyno.

The closest result you'll get to an engine dyno is by taking your car to a hub dyno, the most popular of which is the Dynapack. This is 2-3 times the cost of your typical roller dyno though, hence why only a select few companies have them.
 
its ok I am not worried about my car.... since I keep up with my friends DC2 supposely dynoed at 205bhp before i got my Power FC.

one could say Dyno Dynamics is inaccurate, but I personally dunno how xxx bhp is suppose to feel....so why worry if the car feels fine
 
Are dyno's not calibrated quite often though? or do you mean variables in the car that goes on the dyno?

Well i perfer to have an accurate result so i will definately be booking into a hub dyno!
 
my 172.4 bhp car also beats supposedly 220bhp DC5's(modified ones with breathing mods as well)

get in through your head that dynos are made primaraly for tuning purposes and not to accurately measure bhp outputs

take your engine out of your car and get it engined dyno'd and then come back and then you can boast all you want but less of the pub talk till then ok?
 
Okay okay, this thread is getting way off topic now. Let's just agree to disagree? :)
 
saxo_vts said:
my 172.4 bhp car also beats supposedly 220bhp DC5's(modified ones with breathing mods as well)

get in through your head that dynos are made primaraly for tuning purposes and not to accurately measure bhp outputs

take your engine out of your car and get it engined dyno'd and then come back and then you can boast all you want but less of the pub talk till then ok?
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Pub talk pub talk pub talk, bunch of bandwagon jumpers here!

Dyno's were not made for tuning - they were made to measure power!

WIKIPEDA said:
A dynamometer or "dyno" for short, is a machine used to measure torque and rotational speed (rpm) from which power produced by an engine, motor or other rotating prime mover can be calculated.

A dynamometer can also be used to determine the torque and power required to operate a driven machine such as a pump. In that case, a motoring or driving dynamometer is used. A dynamometer that is designed to be driven is called an absorption or passive Dynamometer. A dynamometer that can either drive or absorb is called a universal or active dynamometer.

In addition to being used to determine the torque or power characteristics of a machine under test (MUT), Dynamometers are employed in a number of other roles. In standard emissions testing cycles such as those defined by the US Environmental Protection Agency (US EPA), dynamometers are used to provide simulated road loading of either the engine (using an engine dynamometer) or full powertrain (using a chassis dynamometer). In fact, beyond simple power and torque measurements, dynamometers can be used as part of a testbed for a variety of engine development activities such as the calibration of engine management controllers, detailed investigations into combustion behavior and tribology.
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Being able to tune is just a plus point about a dyno - even though its widely used for tuning - my point is that they should be accurate.

Get that through YOUR head
 
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Wow, you really don't read other peoples posts, do you?

Nevermind. As I said, way off topic now, so lets just agree to disagree.
 
Actually i read everyones posts. Which part did i miss?

I realise that yous have said dynos will not be accurate - but im fed up with people saying dyno's are made for tuning.

They are ment for calculating power, fair enough - an engine dyno would be the best but its a pain and thats why rolling road dyno's were made. And in my opinion they should be accurate or when you get a read out at a tuning run there should be no peak power shown!

And i have listened to all of yous jumping down my throat with points which actually are not entirely factual!

My only point of actually commenting in this thread is because i was concerned about the power figures! 170bhp from a car when standard thats ment to be 185bhp said one thing to me - that their is something wrong.

Yous have made it more than clear that its the dyno that is not accurate and yet i am still getting comments like - "its pub talk" and "your not reading posts" or "my car would beat your car" "your VTi is crap cos its not a type-r" i never attacked anyone in this thread or any for that matter, only stated my opinions.
 
seems every one has the same view except Barryl85,emotions have taken charge,this thread has been ruined for people who were intrested in the origional topic :lock::lock::lock::lock::lock::lock:
 
Barryl85 said:
And in my opinion they should be accurate or when you get a read out at a tuning run there should be no peak power shown!
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The only time there is not going to be a peak power shown is if there's something malfunctioning with the dyno's pick-up. Each run you make will produce a graph otherwise with a peak power rating be it 100hp or 1000hp.

Barryl85 said:
My only point of actually commenting in this thread is because i was concerned about the power figures! 170bhp from a car when standard thats ment to be 185bhp said one thing to me - that their is something wrong.
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Exactly right..."to me."

You only feel something is wrong because you can't get it through YOUR HEAD that each dyno (brand/type/location/operator) will read differently than others. As stated by many others, there are too many variables that can affect a car's readings from strap tension, tire pressure, wheel alignment, load and yes even weather etc.

The proof is a race whether against time or another car and people have said it in good nature to try to prove their points about "low/problematic" readings that you keep banging your drum to.

And this is entertaining to some degree how you can't get the statement directly above into your head.... but keep trying. I know you can do it. :angry2:
 
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