Discussion
Had my car on the rollers yesterday at extreme in Whitburn, was up for a scottishvag rolling road day to watch my mates s3 and stuck the car on while I was there. Previously (before me owning it) it has ran 356 and 358 bhp at noble Motorsport. Yesterday it ran 290bhp. Was a bit disappointed to say the least. Car was run in 4th gear and the graph is nice and smooth just down on power. So where do I start looking for my 60bhp. Again the cars still in warranty. Seriously contemplating the 420 miles back to bespoke to drop it off there
HI Guys thanks for the replies. I understand the whole rolling road lottery, inititally I wasnt going to run the car but got talked into it as everyone wanted to see it on the rollers. My mates S3 didnt run apparently it was running lean and the operator didnt want to run it, I think its more of a disagreement between tuners and he was being awkward as it has hours of data logging against it which shows its actually running slightly rich but I wont get into that.
There were about 25 cars ran on the day all which made good power, if not slightly higher than i would have expected but certainly not under. Quite a few of the cars have been rolling roaded before at different rollers and made the same power. A few R32's making what you would expect also, so all in all I think the rollers were quite accurate.
Honestly Im not sure if the car feels down on power or not. You would think you would notice if it was but it could have been like this since I got it and with jumping from my ford focus company car into the noble It always feels amazingly quick the odd time that I take it out.
I'l get the graphs scanned and send over to you mate, thanks very much for the offer of that.
The fans for the rollers are at the front of the car and its a closed cell dyno. On the 2nd run is ran 276 so a further 14bhp down on the first run which I would put down to heat soak. The car is a standard 3R and was rolling roaded by the previous owner at noblemotorsport just to check how it was running on completion of a few repairs.
There were about 25 cars ran on the day all which made good power, if not slightly higher than i would have expected but certainly not under. Quite a few of the cars have been rolling roaded before at different rollers and made the same power. A few R32's making what you would expect also, so all in all I think the rollers were quite accurate.
Honestly Im not sure if the car feels down on power or not. You would think you would notice if it was but it could have been like this since I got it and with jumping from my ford focus company car into the noble It always feels amazingly quick the odd time that I take it out.
I'l get the graphs scanned and send over to you mate, thanks very much for the offer of that.
The fans for the rollers are at the front of the car and its a closed cell dyno. On the 2nd run is ran 276 so a further 14bhp down on the first run which I would put down to heat soak. The car is a standard 3R and was rolling roaded by the previous owner at noblemotorsport just to check how it was running on completion of a few repairs.
They didnt put a fan on the intercooler no. He did mention he though it was only boosting to 0.5 bar of boost. Yeah I did think that perhaps noblemotorsports rollers were being generous but this seemed alot of power to lose over standard. WIll send the graphs over and call bespoke to discuss it.
Spoke to Skip at bespoke and think I'm going to make the trip down to let him have a look at it and see what is required. He agrees it must definately be down on power going by the results and the boost it ran. Will let them sort all the other bits and pieces while it is in.
If im going to go the stronger actuators and map stage I would ideally be looking to have the exhaust and intercooler fitted beforehand to make the most of it. Would be as far as I would be looking to take it power wise. Ideally want a balance of speed and reliability, if thats possible!
If im going to go the stronger actuators and map stage I would ideally be looking to have the exhaust and intercooler fitted beforehand to make the most of it. Would be as far as I would be looking to take it power wise. Ideally want a balance of speed and reliability, if thats possible!
Well guys thanks for all the comments. Was holding back until I got a chance to take the car out. Cars boosting no problem to just over .7 of a bar on the boost gauge, which suggests it could be heat related on the rollers as it only boosted to .5 of a bar.
I think al book itin locally, get it checked out before I make the drive down. If the garage pull anything drastic up I'll head down but winter is fast approaching so the car won't be out anyway.
Then fuel things a strange one. I'm going to check that also as 100 miles to a tank is low but on a leisurely run I can still get good mpg, perhaps on the run I was just over eager and running in low gears.
I think al book itin locally, get it checked out before I make the drive down. If the garage pull anything drastic up I'll head down but winter is fast approaching so the car won't be out anyway.
Then fuel things a strange one. I'm going to check that also as 100 miles to a tank is low but on a leisurely run I can still get good mpg, perhaps on the run I was just over eager and running in low gears.
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