Now I have just clocked over 1,500 miles, I can according to the owner's manual, officially "floor it"

So I tried by remaining just under the 2000rpm mark, and then flooring it in one go... The response: nothing :eek: Well, when I say nothing, it's like the turbo requires a second or two to spool up and get the torque in. If, however, I gradually floor it in a two-second period, response is MUCH better. :confused:

It reminds me a little of my 1.9 SDI Polo: you get slightly more power when accelerating at approx 85-90% than you do at 100%

Is this normal (for the 130PD) ? I'm wondering if in fact flooring it all of a sudden kind of floods the engine and it can't burn it quick enough because the turbo hasn't had enough time to spin up...

Any advise and experience appreciated.

Cheers

Xav

Isn't it something to do with engine management trying to be economical? Basically it knows that if you floor it then it's going to be using the greatest amount of fuel, and so works out how much fuel is the optimum to use, and this calculation takes a couple of seconds...

Of course, I might be talking nonsense!

Rob.

Or it could be the small mice in the turbo not reacting quick enough to the electric shocks to make them run faster?

Get some Jabba mice far better!

My throttle is also fairly unresponsive really. The engine can be deemed as "floored" when the throttle is about 80% depressed, and there's a little bit of movement from fully down to 80% where there is no difference in response. C'est la vie, eh. This normally only happens when I'm trying to accelerate hard on the motorway, say 50mph+ in 4th. My car's quite slow in that range, soon to be changed though.

There's deffo a small lag though - wonder if Jabba can get rid of that?

I think its just a classic case of turbo lag

i like turbo lag.. makes the car feel quicker, better for impressing people

as i said previously jason jabba should be able to sort that

I'm beginning to wonder if I do have a problem with it, or if the ECU needs tuning or something.

Colin (Neo_VR) has said when he boots it, he leaves everything else standing, albeit covered in soot - admitedly with the help of TCS so it was on that basis I was thinking something may not be quite right... I think it was in a post with a pug 206gti. Maybe I just took his performance comment a little too seriously

Xav,

I find I have this reposnse on my Octy vRS. When you boot it, it doesn't seem to pick up that fast but if you feed it in a bit more gradually it flies. I think the fly-by-wire is smoothing out the input or something.

Dont forget, ive done 1k more miles than you.. which does make a difference in these engines!

anyway in order to help you.. im gonna go out tonight and experiment in "booting it" :evil: :ukliam:

I'm beginning to wonder if I do have a problem with it' date=' or if the ECU needs tuning or something.

Colin (Neo_VR) has said when he boots it, he leaves everything else standing, albeit covered in soot - admitedly with the help of TCS so it was on that basis I was thinking something may not be quite right... I think it was in a post with a pug 206gti. Maybe I just took his performance comment a little too seriously [/quote']

Twas me that 'had' the 206 GTi mate. Though it does have a lag when you boot it as the turbo does need to spool up first. Takes a second or 2 before it hits boost, then just takes off in a cloud of soot!

Dont forget' date=' ive done 1k more miles than you.. which does make a difference in these engines!

anyway in order to help you.. im gonna go out tonight and experiment in "booting it" :evil: :ukliam: [/quote']

Shall be doing that as per normal on way home tonight! Why do you think my average mpg is 'only' 40ish instead of 50ish!

Its amazing tho. the MPG and engine performance is still getting better daily.. 55mpg on way too work, and 43 on way back (gotta love toying with BMWs on mway slip roads)

Isn't it something to do with engine management trying to be economical? Basically it knows that if you floor it then it's going to be using the greatest amount of fuel' date=' and so works out how much fuel is the optimum to use, and this calculation takes a couple of seconds...

Of course, I might be talking nonsense!

[/quote']

I find I have this reposnse on my Octy vRS. When you boot it, it doesn't seem to pick up that fast but if you feed it in a bit more gradually it flies. I think the fly-by-wire is smoothing out the input or something.

I'm sure it's something along these lines. I have the same as what Rik describes, and I remember others mentioning it too.

So it might not be nonsense just yet, Rob!

Jabba remap does help with this problem quite a lot.

What seems to happen with the standard set up is if you suddenly floor it you get lots of fuel added too soon (hence the puff of smoke) before the turbo has time to respond and then it usually over compensates to make things worse.

This was the case in the Passat TDi 130 I was using at the beginning of the week. Nothing happened below 2000rpm whereas mine takes off well below this mark (Quite pokey though, this engine must really fly in the Furby!)

Quite pokey though, this engine must really fly in the Furby!

:drive1: :eyecrazy:

I used to find that the 'gradually pushed in' throttle worked best on both my A4 TDI Quattros as well (a chipped V6 and a 1.9). You could notice it more in 3rd where it would definitely accelerate better that way instead of mashing the bulkhead