pulley and tune

[Cyclone1]

Once again you seem to be confusing the issue.

The O/p needs to know whether his car is performing differently with the tuning mods, or not.

I'll keep it simple:

If the O/p can't launch his car reliably pick a seemingly flat road and run three runs from a steady 10mph to 60mph.
Either hold the stopwatch in one hand, or have a passenger operate the stopwatch...
Press the START button and mash the accelerator at the same time. When the speedo sweeps past the 60mph marker, press the stop button.

Turn the car round and perform the same in the opposite direction.

Do three runs in each direction and average the readings.

Is that simple enough?

Oh I get it......you are just trying to out patronise me now.... , you don't see the irony so you are obviously not as intelligent as you try to make out...

You seem to miss the point by choosing not to read my responses clearly, my issue is not with what method is used in the case of the OP's problems (dyno, timed runs etc, the advise has been offered which is good), it is how people such as yourself choose to force your point, patronise and belittle others on here.


Move on.....

 

[Billy-cls55]

Oh I get it......you are just trying to out patronise me now.... , you don't see the irony so you are obviously not as intelligent as you try to make out...

You seem to miss the point by choosing not to read my responses clearly, my issue is not with what method is used in the case of the OP's problems (dyno, timed runs etc, the advise has been offered which is good), it is how people such as yourself choose to force your point, patronise and belittle others on here.


Move on.....

Best to ignore this guy Jules, his drug is abusing others and like all drug users wants his daily fix.
On top of that I would not take any advice from anyone that is a forum Troll, what makes it even worse drives a Peugeot FFS
Lets hope he gets banned before we all leave.

 

[Bobby Dazzler]

I think there are two very vald streams of advice here.

1. To check more objectively whether there is a performance difference between the original and modified maps, do a few timed runs, ideally from a rolling start to take away any variation caused by clean take off.

2. To check whether the modified map has actually even applied successfully, and identify any potential issues with the car or map, then it may necessary to get the car on a chassis dyno to enable some measurements to be taken.

Do 1 and then decide whether it's worth doing 2.

 

[Deleted member 37751]

So many experts........

From your tone, should I deduce that car tuning etc is your area of expertise?

And I don't claim to be an expert, merely someone that will try and use a little common sense first and foremost before throwing money at a problem.

 

[Billy-cls55]

From your tone, should I deduce that car tuning etc is your area of expertise?

And I don't claim to be an expert, merely someone that will try and use a little common sense first and foremost before throwing money at a problem.

Your like a dog with a bone, trolling and cherry picking leave it FFS and move on we all get it.

 

[Deleted member 37751]

Your like a dog with a bone, trolling and cherry picking leave it FFS and move on we all get it.

What exactly am I cherry picking here, please tell me? Cyclone1 made a poor attempt at sarcasm and I'm simply asking if he is an expert.

And do you genuinely understand the definition of 'Trolling'? Because, if anything, you are the inflammatory one on this thread; not me.

 

[Sp!ke]

The way I see things is that comparing peak torque or BHP on a dyno on separate days or on different dynos is deeply flawed.

However, tuners often don't tune for peak bhp, they look for the broadest possible spread of power throughout the rev range to improve driveability and the best way of monitoring the changes is by putting the car on a dyno and measuring the output across the rev range and creating a nice graph to compare before and after. The shape of said graph is what is relevant and not necessarilly how high it goes and the shape would not be greatly affected between different dynos or weather conditions.

One can not monitor tuning characteristics scientifically with just a stopwatch and a sensitive bum. If dieselmans theory was correct why doesnt F1 do away with all those expensive telematics?

Oh and Dieselman, why are you so confrontational? Chill out dude.

 

[Deleted member 37751]

...

 

[lopes80]

What do you think the timing gear is...???

It's a stopwatch that reads the time taken to pass two known points then do some maths to spit out a velocity figure.

FFS...the lack of knowledge on this forum beggars belief sometimes.

Stopwatch, oh please, get with the 21st century will you!

Oh and I have plenty of knowledge thank you, seems you lacking some as you still using a stopwatch when im using dynamometers for tuning/fault finding and Vbox's for accurate data!

 

[gazc32]

okay update ,all seems well after I have put the car back to standard for a few days I then reflashed the car with the performance map the car seems to pull so much better now don't know whether the file didn't load correctly but its okay now
thanks lads