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Rolling road second opinion???

This is a discussion on Rolling road second opinion??? within the Maintenance & Performance forums, part of the General Motoring Discussions category; Hey everybody, I got my car rolling roaded a few weeks back and i'm not 100% happy with the results... ...


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Old 07-05-2008, 16:08   #1
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Default Rolling road second opinion???

Hey everybody, I got my car rolling roaded a few weeks back and i'm not 100% happy with the results...


I have a 2005 fabia ASZ engine with the following engine mods:
a revo remap, pd160 air intake, forge fmic, allard egr blanking kit.


I made 144.5 bhp at the wheels and 275 pounds foot of torque at the wheels too. Does this sound about right?
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Old 07-05-2008, 16:18   #2
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Default Re: Rolling road second opinion???

horsepower at the wheels sounds about right but the torque seems low to me for a mapped car, im sure a fellow mapped fabia owner will speak up
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Old 07-05-2008, 18:05   #3
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Default Re: Rolling road second opinion???

Where did you go for the RR?
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Old 07-05-2008, 18:27   #4
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Default Re: Rolling road second opinion???

doesnt sound too bad, most quote the flywheel figure (guestimate) mines made 173bhp and over 300 lb-ft but dont talk much notice of an rr as there never accurate
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Old 08-05-2008, 11:13   #5
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Default Re: Rolling road second opinion???

I went to atspeed racing rayleigh. chers chaps
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Old 08-05-2008, 11:15   #6
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Default Re: Rolling road second opinion???

If you've got the spare cash, then go to another RR for a second opinion.

Agreed that power is about right, but i personally would've wanted a bit more torque than that.

If you're happy with the way it drives though, then i wouldn't worry.
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Old 08-05-2008, 11:20   #7
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Default Re: Rolling road second opinion???

Is it a custom map? Did they tone down the torque to protect your OEM clutch?
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Old 08-05-2008, 11:27   #8
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Default Re: Rolling road second opinion???

Quote:
Originally Posted by joeybig01 View Post
I went to atspeed racing rayleigh. chers chaps
You could always try Engine Advantages

They are quite good and give a true reading
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Old 08-05-2008, 11:52   #9
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Default Re: Rolling road second opinion???

Figures differ from dyno to dyno. For a Revo remap on Awesome-gti's rollers I would expect 160+bhp at the wheels but like I say figures differ from dyno to dyno. My standard car makes 125bhp at the wheels at its last dyno session at awesome.

If it drives alright then I wouldnt worry about the numbers.
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Old 08-05-2008, 13:10   #10
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Default Re: Rolling road second opinion???

I don't know the rollers in question, but the figures look plausible for wheels figures rather than flywheel guesstimates. What gear was that in?
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Old 10-05-2008, 10:43   #11
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Default Re: Rolling road second opinion???

the thing is that the rolling road setup they have is brand new, and i wasn't 100% sure of the way they carried out the rolling road.

For instance you watch a rolling road on youtube etc and the vehicle is allowed to run down on the rolling road. But the guy doing it was braking and making it lock up etc.
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Old 10-05-2008, 18:51   #12
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Default Re: Rolling road second opinion???

Quote:
Originally Posted by joeybig01 View Post
But the guy doing it was braking and making it lock up etc.
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Old 12-05-2008, 09:02   #13
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Default Re: Rolling road second opinion???

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Originally Posted by joeybig01 View Post
the thing is that the rolling road setup they have is brand new, and i wasn't 100% sure of the way they carried out the rolling road.

For instance you watch a rolling road on youtube etc and the vehicle is allowed to run down on the rolling road. But the guy doing it was braking and making it lock up etc.
That's just plain wrong. The reason for doing the run-down is that that establishes transmission and tyre losses, which are where you get the base data for the wheels to flywheel corrections from.
Of course, that doesn't change my opinion that flywheel figures from a RR dyno are guesstimates, but there is some sort of science behind them.
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Old 14-05-2008, 09:27   #14
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Default Re: Rolling road second opinion???

what make of dyno?
the operator sounds like he did'nt have a clue tho
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Old 14-05-2008, 10:44   #15
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Default Re: Rolling road second opinion???

Quote:
Originally Posted by joeybig01 View Post
the guy doing it was braking and making it lock up etc.
Quote:
Originally Posted by Fezboy View Post
+1
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Old 14-05-2008, 11:13   #16
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Default Re: Rolling road second opinion???

What were you hoping for as those figures don't look too bad to me

I think you would be better to try and get a comparison against other cars, a RR day in Shoot Out mde would be ideal, then you would have a better understanding as to how your car compares.
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Old 14-05-2008, 17:21   #17
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Default Re: Rolling road second opinion???

Yeah I'm not completely happy.

I was hoping for 155-160 and was hoping for over 300 lbs ft of torque
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Old 27-05-2008, 22:10   #18
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Default Re: Rolling road second opinion???

Quote:
Originally Posted by faboka vrs View Post
Figures differ from dyno to dyno. For a Revo remap on Awesome-gti's rollers I would expect 160+bhp at the wheels but like I say figures differ from dyno to dyno. My standard car makes 125bhp at the wheels at its last dyno session at awesome.

If it drives alright then I wouldnt worry about the numbers.
What did the dynojet dyno say your power at the flywheel was?? As 125 @ Wheels seems high, you normally see about 20% losses.

We had 184 @ wheels and 205 at the fly on my mates dyno on a VRS fabia the other week.
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