What did you do to your Polo today?

[vwthunder]

I'm a little confused as to how people push an extra 10kw on a standard tune...
Personally, I use advanced timing, better flow from the intake and a custom dump. They have helped, but I doubt I'd be seeing 140.
Obviously a good exhaust, etc would make a difference, but if its on a generic APR, Giac stage 1, etc, I'm not convinced that the extra power is there.

I tried a MBC, cranking the pressure on the diverter, etc, but the ECU didn't like it and pulled timing to keep safe. The best results I've had from the Butt Dyno was removed N112, N249, SAI and a few deg of timing added.

Still dreaming of a Hybrid turbo, but really cant justify the few thousand for an extra 30kw. May go for a custom map, the hardware has more potential than my tune does.

With my MBC I see about 23 PSI in 3rd and 4th gear, compared to other people seeing 18PSI.
I dont know if the car is pulling timing, as i have not logged it, but anyone who rides in it says it sure pulls harder than before, and I guess
142.3KW it shows

[noone]

Don't mean this offensively. You're not a tuner. GIAC/APR/etc are. Her polo can easily get over the 145 mark. As i say to everyone, its not always about how many you change your tune as well as modifications. Its about doing things right.

Agreed, thats why I have my car back to quite stock other than a little extra timing. The ECU knows 'too much', and messing with other parameters does not really do me any favours. If I could get a tune to bypass all the N112, N249 Junk, then it would come on boost harder, but also run out of puff earlier.

That you are running Giac is one of the differences, the question was not just to you mate, a few APR boys have come up to the 140 mark as well, so my question is more oriented at APR stage 1 boys I guess...

As for over 145 atw (ballpark 180 atf), I would be suprised to see that from a generic map. Has been done and surpassed in the UK, but from what I have read, on custom tunes.

What power did your MkIV GTI peak?

[ralp2dam]

I would think run it for more than just a few minutes; I've been told it can take as long as 15 min to return to fully charged after the drain of a cold start, depending on the condition of the battery. Drive it for about 20 or longer, just to be sure.

I'll try and drive it more often. Thanks.

[fuzion]

Agreed, thats why I have my car back to quite stock other than a little extra timing. The ECU knows 'too much', and messing with other parameters does not really do me any favours. If I could get a tune to bypass all the N112, N249 Junk, then it would come on boost harder, but also run out of puff earlier.

That you are running Giac is one of the differences, the question was not just to you mate, a few APR boys have come up to the 140 mark as well, so my question is more oriented at APR stage 1 boys I guess...

As for over 145 atw (ballpark 180 atf), I would be suprised to see that from a generic map. Has been done and surpassed in the UK, but from what I have read, on custom tunes.

What power did your MkIV GTI peak?

GTI peaked at 144.2 at its best. But just before i sold it connected it up to the dyno properly and logged it and noticed that the injectors were maxing out. So apparently it had about 10+ left in it that i was told by an independant dyno and also by GIAC. And this car was also running a 'generic' giac tune. So was more left to be pulled out.

You also have to remember, drivability is a major factor for me in any car. The polo you can easily et 23-24psi out of no dramas. However your fuel consumption and drivability of the car will decline something severe.

S3 guzzles fuel like its a F250 truck on boost. But you modify a car and you have to expect this. Drive it normal and i get 7-12 in the city/freeway very easily.

to vwthunder, running an MBC is not necessary. And clearly a lot of people can see with all the "extra" bits that power isn't being made. Not everything works on every car. Plenty of other things you can do on tihs 1.8t which NOT ONE person has mentioned or done to see results from. Some people benefit from them, some are just out of pocket.

You don't need a full exhaust. The mk4 gti didn't have anything flash. And it made more power than the others.

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ralp. if you are gonna start it every 2/3 days .. 5-10m is fine.. or just zip around the block or 2 and bring it back.

15m will not bring it back to "full charge". your alternator can not charge a battery that quick if its completely dead!

[vwthunder]

. The polo you can easily et 23-24psi out of no dramas. However your fuel consumption and drivability of the car will decline something severe.


to vwthunder, running an MBC is not necessary.

So how much boost is the GIAC tune getting, I know Lucas Flashed Vans polo with the GIAC tune and he was hitting 22 PSI on the Melb Dyno day

And also if running a MBC is not necessary, how do I get to make 22PSI on a APR tune???

[kangfu]

I'm on a GIAC tune and get about 21~22 peak

[vwthunder]

I'm on a GIAC tune and get about 21~22 peak

Does your car use too much fuel, boosting at those levels, I doubt it

[fuzion]

So how much boost is the GIAC tune getting, I know Lucas Flashed Vans polo with the GIAC tune and he was hitting 22 PSI on the Melb Dyno day

And also if running a MBC is not necessary, how do I get to make 22PSI on a APR tune???

As muc has i dont want to say this. 2 polo's directly from me (as in personal/close friends) had issues with their "tune" from a certain "brand" as mentioned. Checked several things before changing, MAF came up with a fault so he changed that etc. Still nothing.

Changed to GIAC. Jumped 13kw on a hot run apparently on the dyno.

I found giac accomodates and works with the mods you change/and do and works much better with them then some others.

[vwthunder]

I would pay the $$ and change to GIAC or Revo, but at the moment I would like to do a bigger turbo, K04 or Frankenturbo or something, so not worth changing the tune yet

[noone]

Its not just about boost. MBC can add boost, but if the ECU is confused by the extra boost, it can pull timing, bleed it off, etc.

Whilst boost is an important aspect of our cars, its not everything... The difference from 17-21 psi may only be a few KW, but I prefer to look at the Torque curve than anything else...

Seems pretty obvisous by now that Giac'd Polo's are pulling slightly better numbers than APR's...

Thunder, you are likely getting more peak PSI, when I was using an MBC I found that boost came on quick, torque was hard, but it also died lower in the rev range. Ultimartely, if you are getting more peak torque but the rest of the curve is suffering, you are prefering peak torque and more noise over a more consistant curve.

when I was logging a lot, I found the best results came from timing and bypassing the N249, the MBC didn't do it for me. Nor did the J vesion of the N75. As Fuzion has said, what works for one tune or vehcile may not work the same on the next.

If you are chasing the last few KW with the existing tune you can also try:
- changing the intake (eg POD)
- removing grills on the MAF
- phelonic spacer (more about heat)
- porting / polishing the exhaust manifold
- better flowing intake mani
- decat / gutted cat / sports cat
- cams / block work
- injectors / fuel reg / fuel pump
- full exhaust
- cranking the turbo waste gate
- intercooer
- Tip / boost piping flow

At the end of the day, it would seem the stock turbo and tune make the biggest impact. K03 can do good things, but a hybrid turbo and good tune is a different ballgame without going to a garrett and a bunch of custom work.

[vwthunder]

People have pulled 260whp from the Frankenturbo K04 hybrid, with the right supporting mods of course, wouldnt mind looking into this, as I dont think you need 400hp for a polo

[vwthunder]

I will post my Dyno graph up when Photobucket is online again, doh

[noone]

I would pay the $$ and change to GIAC or Revo, but at the moment I would like to do a bigger turbo, K04 or Frankenturbo or something, so not worth changing the tune yet

Don't get a K04, waste. CR Hybrid...

Have a look at this thread...

This is in a Lupo with the 1.8T:



Boost is only part of the equation, this thing is not doing more PSI than ours...

[Blitzen]

I have found that in the cooler, denser air he in Canberra that I have been seeing more 20+ PSI out of my Polo. It's a noticeable difference after living in the tropics the whole time I have had the car. the car is making noticeably more power down here than up north.
The only time I have dyno'ed my Polo, I got 113.5kw atw... This was in Jan 10, and the outside air temp was 45C, with and intake temp of over 105C... I was disappointed, but it happens... I would like to do a dyno day soon to see what difference cooler ambient air temp would make on it now.
The only other mods I am planning for my car are Dump Pipe, coil overs, short shift/42DD bushes, and iPad holder/Kiwi wifi cable.

[Blitzen]

Just replaced my NewSouth boost gauge for a new NewSouth item... The older one had a boost/vac leak though the internals... Could hear it ticking onder boost, and would stutter at idle... Leak mush have been worse than I though, as the car is boosting alot better now than before.

The gauge was replaced under warranty by NSP. Apparently had a bad batch of this particular gauge.