What did you do to your Polo today?

[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.