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Dyno tested my 147 today

3K views 60 replies 15 participants last post by  amyndas 
#1 ·
Hi all,

I got my car Dyno tested today. So, after these mods:

- Custom K&N cold air intake
- High Flow Cat (I just got this done today)
- Straight through pipe (no middle resonator)
- Sebring Exhaust

I only got: 76.4kw at the wheels. That's 113kw at the engine.

Not so great huh?
 
#3 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by Justin Fox:
<strong> That's 113kw at the engine.

Not so great huh?</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Thats 151.5 bhp. You just gained 1.5bhp, for how much :confused: eek!

Seems like the un-modded 2.0TS has 145 bhp or less...
 
#4 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by Justin Fox:
<strong>
- Straight through pipe (no middle resonator)
</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Did you notice any lack of torque at low or mid revs ?
 
#6 ·
Justin, why not a 1.6TS? :D wink
 
#8 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by THROTTLEMAN:
<strong>Justin, why not a 1.6TS? :D wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">laughing laughing laughing
 
#9 ·
The people at the performance dyno tuning shop sell UNICHIP. It's a piggy back chip and I have heard all sorts of mixed reviews on it. But they have said that if I buy this chip they can tune, and re-tune it every time I get new mods. They got a huge 8kw gain from a previous 147 Selespeed they tuned 3 weeks ago. The only problem.. is the chip costs: $1190AUD. Not so cheap for something which I don't know much about.

And I can't see a loss in low down torque due to my straight through. It's a very even climb all the way through actually.
 
#10 ·
Justin Fox, just one advice…do another dyno test in a different dyno machine…

I think that they may want to earn some money with you…maybe they get not much power at first dyno…then after installing an UNICHIP or remap your ecu, they do another test and the increase its amazing…cause it’s already there!
I really don’t know!

Only thing I have certain is that the 2.0 TS in a dyno tests, gives almost 160bhp…I think it’s very strange the test you have done (and with all your mods!)…can you send me the test or place here to be analysed?
 
#11 ·
The dyno result is pretty meaningless unless you also have a dyno result using the exact same dyno of your car without the mods. All dynos will give different results, so that one could be reading low. he only way to use dyno results is comparatively. Either to your car before the mods, or to other cars that you want to know how you compare to.
 
#14 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by droemmen:
<strong>...Agreed, but I think the remap will help, in my car it did (1.6 135bhp) with the remap and some other goodies, 129 bhp without the remap. Oh and much better torque. wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Define "goodies" please
 
#15 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by jomor:
<strong> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by droemmen:
<strong>...Agreed, but I think the remap will help, in my car it did (1.6 135bhp) with the remap and some other goodies, 129 bhp without the remap. Oh and much better torque. wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Define "goodies" please</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">:)
New air filter (σκούπα), exhaust system, racing catalyst - system thing
and the remap of cource!
All done by an autodelta dealer in Greece
 
#17 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by RicksAlfas:
<strong>Factamundo bazza.
wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Exactly :)
 
#18 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by droemmen:
<strong>I wish I knew the (exact) original bhp but...
So I can't be sure about how much I owe to the modifications :(</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">When I got my car Dyno tested I used Shell v-power racing, think it helped a bit...
 
#19 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by droemmen:
<strong>I wish I knew the (exact) original bhp but...
So I can't be sure about how much I owe to the modifications :(</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Two Greek magazines gave 124.5 bhp and 125 bhp on two 147s they dyno-ed.

Any suspension mods ?

You ve got PM btw..

Yannis
 
#20 ·
Justin,

As said above, all dynos will give different readings. And unless you know what condition was like when Alfa dynoed this block with 150 or 155 bhp, you can't really compare it. Ambient temperature, humidity, and the dyno itself affect the outcome. So you can either ignore it, or do a "before" and "after" test on the same dyno with similar condition.

About Unichip, a few cars here have had it done. I tested one of them (156 Selespeed), and could feel slightly more power from 4,500 - 6,000 rpm. The rest is the same.

He then found out that the engine was running on the lean side after checking the spark plugs. Then he's just got it re-tuned (richer) and said that there's better pick up slightly down the rev range.

Since it costs the same as AD remap, I'm going to wait for my remap and compare that to his car. wink
 
#21 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by jomor:
<strong> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by droemmen:
<strong>I wish I knew the (exact) original bhp but...
So I can't be sure about how much I owe to the modifications :( </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Two Greek magazines gave 124.5 bhp and 125 bhp on two 147s they dyno-ed.

Any suspension mods ?

You ve got PM btw..

Yannis</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Sorry + new suspension!
Check your PM box :cool:
 
#22 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by droemmen:
<strong>
Originally posted by Paulo Mendes:
[QB]Justin Fox, just one advice…do another dyno test in a different dyno machine…

...Agreed, but I think the remap will help, in my car it did (1.6 135bhp) with the remap and some other goodies, 129 bhp without the remap. Oh and much better torque. wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">droemmen, can you paste here your dyno test...or send me by mail, to compare with my dyno? :confused:

PS:
I've told you guys that a 1.6 TS has more than 125bhp!!! rant

:rolleyes: laughing
 
#23 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by Paulo Mendes:
<strong> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by droemmen:
<strong>
Originally posted by Paulo Mendes:
[QB]Justin Fox, just one advice…do another dyno test in a different dyno machine…

...Agreed, but I think the remap will help, in my car it did (1.6 135bhp) with the remap and some other goodies, 129 bhp without the remap. Oh and much better torque. wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">droemmen, can you paste here your dyno test...or send me by mail, to compare with my dyno? :confused:

PS:
I've told you guys that a 1.6 TS has more than 125bhp!!! rant

:rolleyes: laughing </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">I'll see if I can find it! (I'm at work right now :( )
I think that 125 bhp for a normal 1.6 TS is rather optimistic, think it's more like 118 bhp...
Anyone with a normal 1.6 can enlighten us? wink
 
#25 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by droemmen:
<strong>but I think that power output of same engines, for same cars, from same factories varies 3-5 bhp...
Is this correct?</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Yes - probably more. No two cars ever feel exactly the same! They are all built within tolerances, and final power output will depend on how the engine is run in and used etc.
 
#26 ·
Arh my subject, my friend is the UK importer of the Unichip, but the sod hasn't got round to putting one on my car yet. The garage has informed you correctly that if you mod the car the changes are more benefial if the car is remapped with the changes live on the dyno. For instance changing the air filter causes the car to run richer. A remap will give you benefits over standard but maybe not as much as a custom remap. There is a downside to the Unichip, which is the skill and compatency of the mapper. He could either undermap the car or be too keen and end up with **** loads of knock. It does seem expensive since the cost over here is around 400 quid.

Now about dyno's as I've fixed and used quite a few over the last year.

Power at the flywheel is an estimated figure. I say estimated because the dyno tries to calculate the loss through the drivetrain on a power run down with the clutch depressed. There's a few problems with this calculation. The rolling mass of every car wheel is different dependant on wheel weigh and all unsprung components, brakes etc. This calculation also relies on Force = mass x acceleration. There is so many variables acting on the dyno itself when it does this, even down to air being shifted by the brake on the dyno to cool it down. Now the software on almost all dyno's can't figure out all the variables so it relies on guess work.

The most accurate results are therefore obtained by constant speed runs were the power at the wheels is measured while the car is held at a constant speed/revs. Now this varies from dyno to dyno dependant on roller size and what gear is used on the car. Higher losses are seen the faster the dyno is turning. Although using a low gear will cause the dyno to accelerate to fast and poor results due to lack of resolution in a piticular gear. This is why all runs are either done in 3rd or 4th gear. In general the more powerful the car the higher the gear the run is done in.

The downside is this though, you are then given a acurate reading of power at the wheels on one piticular dyno that can't really be compared to any other dyno. I would be surprised if power at the flywheel is any more accurate than +/- 5bhp from dyno to dyno. Although don't quote me but I've seen some dynos read high some read low. The repeatablity on each dyno will be quite accurate on constant speed, but your unlikely to achieve the same results on a power run for power at the flywheel.
 
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