The 1.9L PD TDI powerquest

[gldgti]

Well, Its that time.

Since selling my mk3, I've been tinkering with the cabriolet and the Skoda has stayed stock.

Until now.

Thanks to Viezu, I've just gained a bunch of kW and Nm that the 77TDI keeps hidden away in stock form.

Those of you who remember my old powerquest thread will know that I shed plenty of sweat making my old mk3 1.9 TD a faster car.

This time is a little different - I have rather more grown up priorities to attend to now, and I certainly dont want to make the Octavia into a car I need to work on all the time, but, I am still looking at a few mods.

So far, this is what I've done to the Wagon:

> Eibach Pro-Kit
> Provent 200
> Kufatec E-MFA
> Viezu remap

and what I shall be working on in the not too distant future:

> new, bigger intercooler piping, including delete of the ASV and EGR valve. Perhaps a better intake manifold altogether.
> full straight through exhaust and downpipe
> GTI/RS brakes (when the brakes wear out)
> Perhaps some of those nice Superpro wishbones/bushings
> sachs single mass flywheel and clutch kit (this when the clutch wears out)

I'm going to keep the turbo stock for as long as it lasts. I have another ecu map up my sleeve for later on which could be a bit "balls out", so no predictions here, but certainly if something happens to poor little KP39 in the future, then I'll be looking to a -17 or bigger.

Big thanks to Greg and Simon for helping me out with my special needs

[kaanage]

Which 2 of the PD remaps do you have - eco, power, motorsport? I suspect it's the motorsport one that you're holding in reserve?

I had all 3 dyno'd vs stock on mine (in the Polo) one day.
Is the KP39 similar to the K03 in the Polo?

[gldgti]

I have the motorsport one and something a little extra for later. I couldnt see the point for me getting an economy map, since diesels can just be driven economically and the 1.9 with a stock turbo is never going to be crazy anyway. My normal driving style is very relaxed .

The KP39 is basically the borg-warner version of the VNT-15.

[kaanage]

They have a remap for a bigger turbo? I was told the motorsport was the highest output one they had for the 1.9 PD.

The power one is actually much nicer for road use and faster on tight racetracks.

[gldgti]

The case for the polo and the octavia's arent exactly the same... the octavia has an enormous intercooler, and the turbo is different.

My other remap is not for a bigger turbo, its for the standard turbo, but I'm sure Viezu can help with tunes for any turbo one would wish to use. The thing is that the more aggressive the maps are, the more information exchange needs to take place between the tuner and the user, and the more responsibility the user must naturally accept for any consequences . As a result, more aggressive maps are not for everyone.

[kaanage]

The case for the polo and the octavia's arent exactly the same... the octavia has an enormous intercooler, and the turbo is different.

Does the intercoolerlook like this? Skoda Octavia 1.9 TDi 110bhp 2001 - 2004 Intercooler CC / Engine Code: (177490)

The thing is that the more aggressive the maps are, the more information exchange needs to take place between the tuner and the user, and the more responsibility the user must naturally accept for any consequences . As a result, more aggressive maps are not for everyone.

Of course - I went through all this with the Viezu techs (pre Simon becoming distributor for Aus).

My point about the power map is that it provides more torque in almost all situations than the motorsport one, which provides a small top end boost at the expense of noticably less torque though most of the rev range. As a result, at a tight track like Winton or Wakefield, the motorsport map provides better performance while the motorsport map is beneficial at tracks with a large portion that is fast like Phllip Island and Sandown - not sure how Eastern Creek would fare as it only has one really fast section and the rest is reasonably tight. On the road, you would have to be driving in a culpable manner for the motorsport map to be preferable to the power one.

With the Octavia's heavier weight the bias would be even more noticable than the little Polo.

It would be very interesting if you were to repeat your MkIII port work on the PD as it doesn't breathe very well at high (> 4000) RPM.

[gldgti]

Kaanage - that intercooler is from the mk1 octavia (based on the mk4 golf). My octavia has an intercooler as big as the radiator, which is also huge. It may be the same as the caddy. Without actually measuring, its ~550x500x45mm

**edit** I'm fairly certain its this:
http://www.seatcupra.net/forums/showthread.php?t=347999

I would love to see your dyno plots of the different maps, out of interest. Post them here if you can, would be excellent.

As to the exact map I'm running now, well I said motorsport because thats what I asked for, but Simon described it as a "strong performance" map. I can't tell you how it compares with any of the other maps, only how it compares with stock

I agree, it would be great to do some porting work on it.. if I get the opportunity I surely will, but knowing these engines it may be years and years before something requires the head to come off.... I wont do it otherwise

I'm going to try and get both my vehicles to the next dyno day up here, I really want to see what the cabriolet with its low tech powerplant is making, compared to the PD tdi with its more advanced system. The two turbo's are quite similarly sized, even though the skoda has a VNT and the cabriolet has a wastegated turbo, it should provide some interesting talking points too.

[Buller_Scott]

i've always been confused by this - does the 1.9 pd100, with a turbo commonly called "vnt15" on tdiclub, have a kkk kp39 or a borg warner bv39?

comparing greg (kaanage) and my dyno plots at the melbourne dyno day last year, the ''motorsport'' map in my car definitely sees less outright torque provided later in the rev range... you can feel it seat of the pants, too, which is why i use the motorsport map when going interstate - feels like overtaking ability is just more "on tap".

[gldgti]

KKK was bought out by borg-warner a few years back - they are essentially the same company. It may simply be that both turbo's are the same, but one is made in one factory in one country, and the other somewhere else.

VW factory turbo's have been supplied by various suppliers for the same model for years and years. For instance, to fill the orders for the original TDI engine and the previous 1.9TD, vw was using a k03 and the garret GT-15 - different turbo's and manufacturers but pretty much the exact same specs.

Its no different now

So, to answer your first question - you would have to have a look at yours in order to know exactly what it is, most likely. However, you can be sure there are no major differences (in performance) between any of the turbo's you mentioned.

[Evaded Motorsport]

VNT15 and KP39 are basically the same (sits in the same place, same ports etc, same performance). Depending on where you are in the world and which model you purchased depended on whether you got the VNT15 or the KP39. The KP39 tends to be more reliable than the VNT-15. I actually have my KP39 for sale as well as a VNT1749VB. Although I am not sure how healthy the VNT1749VB is but it is a direct bolt on.

I'm going to a VNT2052 so don't need it anymore.