Comparison of different tunes for Golf R

[james928]

I have a question jimjaroo. Do they give you any warranty on the drivetrain? Good tuning companies do.

IMO, I see in the graph that the BPS Tune wounded boost too much, most likely disregarding outside temperature and other factors that protect the engine from destroying itself.

All intake temp comp values are as original as is knock regulation. Requested boost DC has actually been reduced over the 10-12 runs carried out. If you look the scaling has been enlarged on the sheet to make it very clear. Give another hour or so I would have got rid of the initial boost spike with adjustment to base requested DC. It was late and Jim had to get back home and I needed a beer

[Transporter]

Thats incorrect. Only oettinger as far as im aware offer a drivetrain warranty. Are you suggesting that theyre the only "good" tuner?To me it looks like the APR tune isnt boosting properly. Certainly other APR runs have produced better results than that. Something is not quite right with it. The initial boost spike isnt very big for some reason.

Who?
I didn't use any name!
I only said that some companies offer a warranty as well.

[Transporter]

All intake temp comp values are as original as is knock regulation. Requested boost DC has actually been reduced over the 10-12 runs carried out. If you look the scaling has been enlarged on the sheet to make it very clear. Give another hour or so I would have got rid of the initial boost spike with adjustment to base requested DC. It was late and Jim had to get back home and I needed a beer

So, does your tune come with the drivetrain warranty? Not that I would be after the tune, I'm happy with the stock in our diesels that are used only for normal driving.

[Tim]

Who?
I didn't use any name!
I only said that some companies offer a warranty as well.

Dont be silly. You said "good tuning companies do" when in fact only 1 company I know does. I just fail to understand what the point of your statement was.
GIAC, APR, superchips, custom code and Revo dont. But theyre all good companies.

Anyways lets not go too far off topic. This thread is interesting. I wonder how APR will react to their code being torn apart like that? Does this open up the possibility of hacking APR trial software so that it can be activated? I wonder what the legalities of that are. Im not aware of any licence agreement being shown to customers that have been given the free trial.

[Transporter]

Dont be silly. You said "good tuning companies do" when in fact only 1 company I know does. I just fail to understand what the point of your statement was.
GIAC, APR, superchips, custom code and Revo dont. But theyre all good companies.

Don't be silly Tim you asked me this "Are you suggesting that they're the only "good" tuner?" Who did you think by they're that I had on mind? APR, did you? I see that here is a lot of paranoia when it comes to APR. And some just take a cheap shot at every opportunity.

[Sharkie]

I see that here is a lot of paranoia when it comes to APR. And some just take a cheap shot at every opportunity.

I agree, I have been at many a dyno day run by totaly independent operators where many of the different tunes were run with hardly any difference between them. I certainly have not seen such differences in independent tests ..... back to back .... ever

For something like this to come out and the uninformed then to jump on it to point fingers at how bad 1 is compared to the other I personally call BS ..... .... or manipulation.

Instead of the "good" press this was meant as for BPS, this is more of "bad" press situation for those of us who have seen it all before .... .... and know better ....

[Corey_R]

My question is why the "stock" tune is showing ~360Nm at the wheels (on a 33 degree day no less) when VW rate the car at 330Nm at the flywheel. I understand that some companies understate their figures a bit, but with drivetrain losses, they'd be understating by A LOT to get that figure?

Then my next question would be what was discovered to allow a max of 458Nm ATW on this 33 degree day when the previous Golf R tuned by BPS produced only 392Nm on a 24 degree day.

[Mr_Bob]

My question is why the "stock" tune is showing ~360Nm at the wheels (on a 33 degree day no less) when VW rate the car at 330Nm at the flywheel. I understand that some companies understate their figures a bit, but with drivetrain losses, they'd be understating by A LOT to get that figure?

Then my next question would be what was discovered to allow a max of 458Nm ATW on this 33 degree day when the previous Golf R tuned by BPS produced only 392Nm on a 24 degree day.

could be a few factors.
The torque figures you see are tractive effort, which is different, and is influenced by gear ratios (4th should be close to 1:1) but also the diff ratio and drivetraing losses.
So it's very difficult to compare to VW's flywheel rating,

Things like the weight of the wheels influence this too, so the lower rating may have had 19's, and this one may have aftermarket lightweight rims?

[jimjaroo]

Then my next question would be what was discovered to allow a max of 458Nm ATW on this 33 degree day when the previous Golf R tuned by BPS produced only 392Nm on a 24 degree day.

I can probably answer the second part of the question, my vehicle is fitted with a CAI and cat-back exhaust. Could weight also be a factor as this a 3dr vs 5dr. I'm sure there will be some small differences there concerning peak figures. But I'm sure there is probably more to answer as far as this question is concerned so I will let James talk you through that one . VW also quote 155kw ATW yes? I beleive the vehicle ran nearly 10kw under that.

Before this topic goes too far off the rails, I just want to point out that no matter how much the results differ from dyno to dyno, car to car, day to day. This was all completed on the same day/dyno with the same car. So the results before you are the actual results for this vehicles increases and decreases and cannot be compared to those carried out in Argentina on the 5th of 2006 with john's car (obviously not a real person or vehicle ).

[jimjaroo]

I agree, I have been at many a dyno day run by totaly independent operators where many of the different tunes were run with hardly any difference between them. I certainly have not seen such differences in independent tests ..... back to back .... ever

For something like this to come out and the uninformed then to jump on it to point fingers at how bad 1 is compared to the other I personally call BS ..... .... or manipulation.

Instead of the "good" press this was meant as for BPS, this is more of "bad" press situation for those of us who have seen it all before .... .... and know better ....

Sharkie could you please elaborate on how this is "BS"? I was personally present for the entire tune..can you explain to me how these figures have been manipulated?

I have not taken any "cheap shots" at anybody, this is not an attack on APR, this is simply giving everybody plain information, it's as simple as that. APR put their tune on my vehicle, we ran it several times on the same day in the same temperatures, then, the tune was removed and several runs were made with the VW base run as you can see recorded. At the end of the day on the same dyno with the same temperatures and settings we ran the BPS tune. This is the information, it's clear as day, the dyno settings are in print at the bottom of the page.