Hello guys,few days ago took my skoda octavia 2019 1.5 to check specs on the dyno because it felt a little bit weak,and the dyno guy made a few runs and we found out that the wheels horse power produced 100 hp and even lower.

Can someone explain what is the problem.

Thank you.

1 hour ago, Skodayan said:

Can someone explain what is the problem.

You are measuring DIN net wheels, not DIN test flywheel. The problem is that your dyno operator didn't explain the difference to you properly.

4 minutes ago, KenONeill said:

You are measuring DIN net wheels, not DIN test flywheel. The problem is that your dyno operator didn't explain the difference to you properly.

So is it normal?

Normal that the guy did not explain the difference? - Only he or someone that knows him can answer that.

 

Is 100 hp at the wheels normal for your vehicle? Well it would help if you were to say what you were expecting, what the manufacturers figure is.

6 minutes ago, J.R. said:

Normal that the guy did not explain the difference? - Only he or someone that knows him can answer that.

 

Is 100 hp at the wheels normal for your vehicle? Well it would help if you were to say what you were expecting, what the manufacturers figure is.

No,i meant is it normal that the bhp is 100 and lower,the engine is 1.5 turbo tsi that comes stock with 150 hp,and as i understood,the bhp shouldn't be lower then 125-128.

So im asking for directions what can cause the big bhp drop.

Welcome to the forum.

 

Have you a car with a DSG, in your case a DQ200?   How many miles has it done, what servicing has it had?

 

Something is very wrong with your car if the dyno is right.

 

Being a 1.5 TSI which has ACT then the gears that the readings are at matter as does manual or DSG. 

 

The PS & Nm Torque shown by manufacturers as MAX should be the least that can be expected in perfect conditions.

A Dyno with cool air blowing at it is ideal. 

Like in the UK or much of the EU.  Not too high above sea level and not too extreme temps and 95 octane fuel that is not just some crap. 

Edited 24 October, 20214 yr by roottoot

1 minute ago, roottoot said:

Welcome to the forum.

 

Have you a car with a DSG, in your case a DQ200?   How many miles has it done, what servicing has it had?

 

Something is very wrong with your car if the dyno is right.

 

The PS & Nm Torque shown by manufacturers as MAX should be the least that can be expected in perfect conditions.

Like in the UK or much of the EU.  Not too high above sea level and not too extreme temps and 95 octane fuel that is not just some crap. 

DSG7 dq200,service every 10k

How many miles,

like has it done 40,000 and could do with new Spark Plugs, or a new Air Filter?

 

I wonder if Dyno Man does not know which gear to be using.  Hard to believe but this has been the case with 1.4 TSI Twinchargers with DQ200 DSG's.

Just now, roottoot said:

How many miles,

like has it done 40,000 and could do with new Spark Plugs, or a new Air Filter?

 

I wonder if Dyno Man does not know which gear to be using.  Hard to believe but this has been the case with 1.4 TSI Twinchargers with DQ200 DSG's.

About 33000 miles,changed the spark plugs.

Maybe i should make a compression test?

Have you tried the car on 97 ron or 99 ron Super Unleaded.

Is the air filter clean / fresh?

Most Important.

 

Has the car had the Service Campaign / Skoda Secret Service Service Campaign & in some cases the Safety Critical RECALL action for a software update? 

That is if applicable as i can not see one for a 2019 1.5 TSI Octavia. 

 

https://www.gov.uk/check-vehicle-recall

 

http://skoda-auto.com/services/recall-actions

 

Edited 24 October, 20214 yr by roottoot

Forget the dyno, do a timed 0-60 run or better still 30-70 in top gear if the figures are available.

 

Back in the days when before Youtube and irritating influencers with stupid names like Shmee the road tests in Autocar or Motor magazines would give you the full range of performance figures, economy, dimensions, turning circle etc etc etc, nowadays all people seem to worry about is connectivity with their smartphone.

The problem with dyno or rolling roads is if the operator has not input the correct atmospheric pressure etc. This can lead to wildly out of spec readings either higher or lower. Different types of gearboxes will have different loss factors as well. Even types of tyre and pressure can have an effect on readings or how tight the car is strapped to the rollers themselves.

As long as the car is running fine with no fault codes etc, in spec economy then I wouldn't worry about it.

Unless the dyno operator correctly applies the expected transmission loss figures specific to the car then what will be measured is WHEEL bhp/Nm plus a guessed correction for transmission losses.

 

Manufacturers specify FLYWHEEL bhp/Nm so unless the transmission loss figure is correct the numbers seen on a dyno will be wrong.

 

A decent dyno operator will firstly do a run powered by the dyno to measure the actual transmission losses on that specific vehicle and then apply them to run(s) powered by the vehicle - this data should be shown on any graphs you have received.

The 1.5TSI engines are generally good machines.  Quite pokey.  Definitely take on @roottoot advice - when was the car last serviced?  Try new Air Filter and spark plugs and run on decent fuel.  The car BTW knows if it is running on crappy fuel and it will adjust the performance (by retarding the ignition).  I suggest that you get a service done first, then you can take the car back to Mr Dyno and see what happens then.