>70,000km polo gti, ability to handle tune?

[Blitzen]

Unless you have a diesel, you will hardly feel it. I have had one for over 103,000km now, and don't even notice the vibration with the Air Con on.
I think you are focussing too much on what the vibration will be. If you put a denser bush in, it's going to cause vibration. If you don't want any vibration increase, leave the stock bush in there.

[s4mmie]

Just out of curiosity, which bush do you have Blitzen?
I think that's where most of the confusion comes from. Some people say it's fine, others say it's too harsh. It's probably because they all have different shore bushes! The 85K APR sucks for a daily driver, it does it's job well but increases vibrations wayyy too much for me.

[arcenite]

Does anyone have any experience with this? VW Polo 9N 02-08 Powerflex Petrol Car Front Engine Mount Insert Bush PFF85-620 | eBay

Or should I stick with the diesel one if it's safer? VW Polo 9N 02-08 Powerflex Diesel Front Engine Mount Insert Bush PFF85-620R | eBay

Do I have to sacrifice a significant amount of performance so that it'll vibrate much lesser? I can deal with it if it's just a little bit less performance.

[Redliner]

Does anyone have any experience with this? VW Polo 9N 02-08 Powerflex Petrol Car Front Engine Mount Insert Bush PFF85-620 | eBay

Or should I stick with the diesel one if it's safer? VW Polo 9N 02-08 Powerflex Diesel Front Engine Mount Insert Bush PFF85-620R | eBay

Do I have to sacrifice a significant amount of performance so that it'll vibrate much lesser? I can deal with it if it's just a little bit less performance.

I have installed :
VW Polo 9N 02-08 Powerflex Petrol Car Front Engine Mount Insert Bush PFF85-620 | eBay

I don't feel any vibration even with the air on. Responsiveness is great. You can feel the clutch alot better. I would only suggest going to a stiffer bush for track cars or high horspower applications. Plus its only $53.

[arcenite]

Sweet! I might get that then regarding ECU tuning, is an intercooler recommended? I mean, if it isn't that much of an aggressive tune, shouldn't the stock be able to handle it sufficiently?

[noone]

You can get a tune now and IC later...
The main issue with the stock IC is heatsoak. When you add more boost, you add more heat. If you punch it a few times, each additioal time, there is more heat that didn't get eliminated and the timing of the engine and density of Oxygen are reduced.

If you're going fast in 5 deg weather, you don't need one, for normal driving in summer, heat soak is very noticable.

[Catfish]

I've tried a few different dogbone bushes, and as far as I can work it out the hardness goes like this:

Powerflex red (diesel) <70 - but cofusingly with 85 in its part number
Powerflex yellow (petrol) 70 - but also with 85 in the part number
Powerflex purple (track) 85

Superpro purple (sports) 70
Superpro purple (competition) 80

APR purple (sport) 70
APR yellow (motorsport) >80

Happy to be corrected if anyone knows otherwise. For the record, I prefer the Powerflex petrol for the GTI.

[Blitzen]

Just out of curiosity, which bush do you have Blitzen?
I think that's where most of the confusion comes from. Some people say it's fine, others say it's too harsh. It's probably because they all have different shore bushes! The 85K APR sucks for a daily driver, it does it's job well but increases vibrations wayyy too much for me.

Haha, yeah, I was confused!! I have an APR bush.

Sweet! I might get that then regarding ECU tuning, is an intercooler recommended? I mean, if it isn't that much of an aggressive tune, shouldn't the stock be able to handle it sufficiently?

I have had the APR stage One V2 tune since Dec 09, in have never run an aftermarket intercooler (though God knows I want one!! But other things of greater priority always seem to come up!!). You don't need to run a bigger intercooler to the stock one with a basic tune, but there is nothing wrong with having it there.

[noone]

Do you have a link for the guide to remove the sai and N249. Its on my list of "to do" things.

I'll do up a new thread to keep it simple.

[arcenite]

anyone living around the SE suburbs who tunes cars and needs an extra pair of hands? :p