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Lost a lot of power.....

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Old 01-29-2011, 10:05 AM
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You would feel that loss in power.
Thats a huge amount.?????
Old 01-29-2011, 10:05 AM
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What would make the car judder or vibrate oddly from the rear on the dyno ???

It was doing it at about 4/5000rpm when on its power run come to think about it now
Old 01-29-2011, 10:05 AM
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30-50 bhp down; your going to FEEL it.

bad fuel?
i wouldnt be expecting fuel to cause that much drop though; maybe 15-20bhp at most.
Old 01-29-2011, 10:11 AM
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Originally Posted by Suits,Jan 29 2011, 08:05 PM
What would make the car judder or vibrate oddly from the rear on the dyno ???

It was doing it at about 4/5000rpm when on its power run come to think about it now
Could be a few things, not strapped down properly or the rollers not working properly or wheel spin (on the dyno i use it sometimes wheel spins in 4th).

I think its the setup IMO.
Old 01-29-2011, 10:18 AM
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Originally Posted by Irvatron,Jan 29 2011, 11:11 AM
Could be a few things, not strapped down properly or the rollers not working properly or wheel spin (on the dyno i use it sometimes wheel spins in 4th).

I think its the setup IMO.
I love it to be the setup .

We adjusted the strapping 3 times from tied down to proper loose.

I had new DS2500 pads fitted on my service the day before, when fitting these the guys would have clocked a seized caliper no ??
Old 01-29-2011, 10:22 AM
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Wheels the same size?
Old 01-29-2011, 10:24 AM
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New pads, juddering from the back, low on dyno power...

I'd be getting the back jacked up and checking how free the wheels are.

You will also feel the wheel to be unusually hot after a bit of a drive.

But either way, losing that much power would feel like driving with the brakes on!

Did Romain offer any suggestion?
Old 01-29-2011, 10:27 AM
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Originally Posted by Kitesurfer s2000,Jan 29 2011, 11:22 AM
Wheels the same size?
Yep same size .
Old 01-29-2011, 10:33 AM
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Originally Posted by MB,Jan 29 2011, 11:24 AM
New pads, juddering from the back, low on dyno power...

I'd be getting the back jacked up and checking how free the wheels are.

You will also feel the wheel to be unusually hot after a bit of a drive.

But either way, losing that much power would feel like driving with the brakes on!

Did Romain offer any suggestion?
Yeah, myself and Romain went through quite a few things, the straps, the maps, but nothing appeared to be obvious .

Romain was busy with customers when I turned up so after spending over an hour with me he had to crack on like, I'm going back down there soon though when we can have a proper go at it.

I've been having battery issues of late so Im going to change that, get new plugs and give teh filter another clean then start from there.

I just thought I throw it up in here and see what you guys thought .
Old 01-29-2011, 10:36 AM
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A mates 350Z lost a similar amount of power betweens dyno runs, we found that oil from the K&N was fouling a sensor-air flow or the like- back to standard and the ponies came back to the corral, could it be anything like this? clutching at straws sorry.


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