Been on rolling road.

[ianturbo]

132bhp loss is that not a tad to much ??thats like a golf GTI your missin through transmition !!!! 158 ATW can't be right can it mine is much quicker than my capri and thats got 180 ATW 228 ATFW abet its 2WD and weighs as much as kate moss but vr4 is miles in front !
ian

[pitslayer]

i dont think its that far out actually, compared here
ok its gone.
someone in 1/4 times just below don had 155whp, but that one seems to have disapeered

[bradc]

Their power figures at the fly for the fto and your car are completely rediculous.

158atwhp is 117.9kw, which is quite low, and the FTO is 86kw is just as bad, especially considering Carsten's 25ST Legnum did 93kw ATW which has the same 4 speed autobox but 4wd and is only rated at 175hp at the engine.

[Turbo_Steve]

In all honesty, dyno runs for power don't mean much unless you do a number of cars or a number of different dynos: it's so subjective.

And, from your point of view, utterly irrelevant: you're concerned with how your car is performing, not an arbitrary number. When it was dyno'd, they should have taken AFR and boost readings, as well as (ideally) air temperature and knock count.
That information is significantly more useful if your car is feeling down on power.
How early did it make peak boost? Was it sustained? How much was it?
What were AFRs as it came on boost? Do you have Ecoscan, in which case you should DEFINTELY have it logging during a dyno run.

Peak torque at 870rpms doesn't make any sense, it's nonsense: peak torque MUST happen whilst the car is on boost, and that ain't happening at revs that low. The only reason for a peak torque reading so low is dyno pre-load is set silly high, or gearbox (if it's an auto) did something funky at the start of your run.

What was the bhp reading at 870rpms?

[Kenneth]

870RPM = Torque multiplication via torque converter.
Usually they don't start logging the power run till nearly 2000RPM... Sounds a bit crazy to me.

Agree that it was a waste without the afr, boost and knock figures to match. I would always want AFR and Boost minimum.

In all honesty, dyno runs for power don't mean much unless you do a number of cars or a number of different dynos: it's so subjective.

And, from your point of view, utterly irrelevant: you're concerned with how your car is performing, not an arbitrary number. When it was dyno'd, they should have taken AFR and boost readings, as well as (ideally) air temperature and knock count.
That information is significantly more useful if your car is feeling down on power.
How early did it make peak boost? Was it sustained? How much was it?
What were AFRs as it came on boost? Do you have Ecoscan, in which case you should DEFINTELY have it logging during a dyno run.

Peak torque at 870rpms doesn't make any sense, it's nonsense: peak torque MUST happen whilst the car is on boost, and that ain't happening at revs that low. The only reason for a peak torque reading so low is dyno pre-load is set silly high, or gearbox (if it's an auto) did something funky at the start of your run.

What was the bhp reading at 870rpms?

[Nutter_John]

Right ok Kyle ,I think either then dyno was a waste of space or they have messed up the figures

The is no way on this plannet your car is producing 334 ft/lb of torque full stop , and I can not think of a single car on the plannet that produces that much torque at idle .

plese post up the graphs so that we can look at them and worked the true values

[Nick Mann]

Using the common calculation from the clubs various rolling road days and assuming your 158 ATW is accurate, you have just under 230 bhp at the fly. That is on the low side, but nothing that hasn't been seen before.

The highest ATW figure on the day of the Silverstone RR was Soapys car, at over 230.

I also agree that boost levels and AFRs would be interesting, as that will help diagnosis, whereas the numbers you have posted are all arbitrary and sound like loblocks.

[Nutter_John]

just worked out that thye dyno operator bloke did not know how to run an auto , the reason for the big score is down the the effects of the TC and it not locking up , it thorws the machine off and thats why you get screwy results

[pitslayer]

boost 6psi, exactly what my gauge reads and his read
air temp 20
either way its prooved the point my car has naff all power.
the 160 atw is about right, it makes sense, from when i looked at qaaurter mile times last week. someone had 155atw and was next to don on the table.
the cars that keep up with me.

couldnt do a full power rin with loads of goes because there exhaust vented over to a new house that was builtm they complained

[Kieran]

What were your At the wheels figures then Kyle? I'm a little confused.

[Wodjno]

What were your At the wheels figures then Kyle? I'm a little confused.

Only a bit

Venting exhausts into someones backyard

[peter thomson]

I'm competely lost with this thread .One figure appears to fine and then Kyle said that they couldn't do a proper run and that it's way down on power. Without any printouts I don't think we will have any idea what's going on

[Eurospec]

158 at the wheels is in the ball park for a standard auto. I see that sort of figure all the time.

The torque at the start is the torque converter effect like nutter says- you get a mountain of torque as the t/c loads up.

Cheers,

Ben.

[pitslayer]

its 158 atw.
and someone built a house a field over from interpro, then complained about the garage thats been there for 15 years venting exhaust fumes there way

[Kieran]

158 at the wheels is in the ball park for a standard auto. I see that sort of figure all the time.

You reckon Ben? I'd say that's a bit low... Most of the standard ones we've tested in the past were between 170 - 185bhp give or take.

Mind you, unless Kyle posts some GRAPHS it's pretty difficult to make any useful suggestions!

[pitslayer]

how would i post a graph without a scanner,

[peter thomson]

Take a pic if you have a decent camera and upload it

[Turbo_Steve]

Digital Camera?

[pitslayer]

haz no decent camera

[Kieran]

haz no decent camera

So what do you take all your car detailing pictures with?