Custom Code Reflash dyno result

[Jmac]

If you read and write any eeprom including the dash cluster you will get this prompt, because you are overwriting it , there is a warning prompt. Came across it heaps. 5051 software may have changed since i was in dealerland, when i was there i dont remember it ever being the case , would like to know more if it is.
Cheers
JMac

[Sharkie]

there's little point, irrespective of which tune you have, the VW techs will pick up a re-map on their equipment.

VW dealers can only tell if the ECU has been modded by looking at the reflash counter. This is the only way for a dealer to tell without sending the whole ECU in for inspection by the factory. Most ECU tuning companies have not been completely successful in not resetting the flash counter so many of the ECU chips out there are very detectable to VW.

APR does not reset the flash counter, so irrespective of how many times you change the map it stays at where the factory had it. This is why the dealers (who know how to change APR maps) have gotton into the habit of fiddling with the cruisecontrol buttons in the appropriate manner to see if they can detect an APR chip. I have seen them do this ..... !!!!

Which is also why mine is security code locked ....

[GT3]

VW dealers can only tell if the ECU has been modded by looking at the reflash counter.

A VW tech plugged in the latest diagnostic equipment right in front of me. He pointed to a little screen in the right corner of the monitor which usually displays numbers. Mine showed no numbers at all, and they knew exactly why it didn't....

[Timbo]

Most ECU tuning companies have not been completely successful in not resetting the flash counter so many of the ECU chips out there are very detectable to VW.

I thought it was the other way around -- most of the tuners now reset the flash counter -- at least that's the case, as I understand it, on software for the S3 from APR, GIAC, REVO, Custom-Code, SuperChips... ? Not sure about the Polo, and obviously it's a different ECU

[Jmac]

Ah well things have changed then. Ive only been away from Porsche for 12mnths. The flash counter wasnt reset , and i seen many Turbos come through and i knew they were flashed same goes for Cayenne. Undetectable then. Tunes werent all done by APR either. Anyway you learn something new everyday. Glad we do otherwise it would all get a bit boring.

[whiteVR6]

Nice result , I do have to ask , does the sensor for the IT get placed in the throttle body ?

[shaneth]

Yes it was.

[DaveMack]

Excellent results, Shane ... must get over and see you some time.

Cheers,
Dave

[shaneth]

Excellent results, Shane ... must get over and see you some time.

Cheers,
Dave

Sounds good mate. Let me know when.

[Bug_racer]

Yes it was.

Ok , so the sensor for the air intake gets placed in the throttle body , once again the dyno readings have been changed for the benefit of the customer .
The Intake air temp probe should be placed in front of the car and not in the intake . If you place it in the intake how are you going to measure the intercooler efficiency when the correction factors of the dyno are going to cancel out any gains you make ? If Shaneth was to fit an intercooler his result will be similar to what they are now , I know it will change the a/f ratio as well but thats another story and that should be addressed by the tuner !

I thought this would give some good reading for those who actually have half a clue on how a dyno works :

http://www.ls1.com.au/forum/archive/index.php/t-58222.html

For those that dont I've taken some extracts from the threads , and yes Todd is a dyno builder/operator ! :

An example of the shortfalls of this style of correction is where recently a discrepancy of over 500RWHP was induced (possibly due to a faulty sensor, at a much publicised Dyno contest), and an Inlet Air Temp of over 200Deg C was recorded, resulting in a Correction Factor of over 40%.This means 1000RWHP suddenly becomes 1400RWHP!

providing there is not a large difference between the Inlet and Ambient Temp.

It is much better (in my opinion) to run with correction than with none at all, this means that if you go back to where you were tested before on a day that had quite different Weather Conditions compared to when you were first tested, you should get very similar results, this is on the proviso the car has not changed.


Pretty easy on a DD , place the temp probe 3 feet in front of the car so it reads the same air the engine actually sees rather than a bull**** overcompensated figure

and the air temp sensor is directly in the path of the fan (as Delco says)



To put it simply , a dyno has correction factors so you have the same results no matter what the temperature/elavation . Im sure one day someone will do a mod (front mount / downpipe etc) and find they have lost power . This will be due to inconsistant readings from previous dyno's !

Sorry to change the original topic of the thread

[Blitzen]

And so it begins.....

[DubSteve]

And so it begins.....

Atleast this lasted a couple of pages right

[Bug_racer]

I really dont get you guys , you dont understand how a dyno works yet you seem to be happy to bag me out . Ever notice how so many people who actually know how to tune dont bother posting anymore ?

Atleast this lasted a couple of pages right

[Blitzen]

I'm stoked that Shane went the route he did, and it really paid off. He was extremely helpful when I was looking at my reflash, we discussed the pros and cons of all the reflashes we could find(I even emailed Power Chip!!) and even in the face of another tuners product at that workshop, he didn't do the whole"...are you sure you want this one??" or "...man, you know this product delivers the power with much more blah blah..." Hey even put up with my scary driving in Brisbane peak traffic(Are you sure that gap is big enough?? You know it!!!)!!
Taking the route less traveled has really worked out well, and I think more people will start looking at it.
At the end of the day, its horses for courses, and this one suits Shane well, just as my flash works for what I want, and so on and so forth.

[Blitzen]

I really dont get you guys , you dont understand how a dyno works yet you seem to be happy to bag me out . Ever notice how so many people who actually know how to tune dont bother posting anymore ?

Sorry, wasn't baggining you out about how the dyno works, I learned some more that I didn't know, but just the was you went about the whole dyno thing in the first place was kind of dissapointing, and going out to poo poo someone elses dyno sheet(not on this occation, but we all know the one) in the first place was pretty low and sad. And with the above, we were all just waiting for it...