Turning up Boost

[Cruize]

On a standard Leon Cupra 1.8T what can you safely turn the boost up to without further mods?

 

[Jonah]

On a standard Leon Cupra 1.8T what can you safely turn the boost up to without further mods?

1 bar - I wouldn't go over 1.1 bar myself

 

[Cruize]

cheers. I've only had mine a month and by the boost guage it says i'm runnin just under 10psi which is a bit..... girly lol.

 

[Jonah]

Std is 0.7 bar whic is about 10 psi - sounds about right.

 

[G2232]

yeah thats about right
with a remap you will only get a possible 6psi more

 

[Damoegan]

I've just had my mk4 Ibiza Cupra remapped before christmas and before the remap it would over boost to about 11/12psi and then settle and hold 10psi, now it over boosts to about 18psi and holds about 15psi,

 

[ibizacupra]

how are you contemplating turning up the boost?

remap only advised way of doing so.. keep fuel and ign to suit

 

[marky t]

if you just turn the boost up with a controller or bleed valve you will have problems with the over boost and the car will keep going into limp mode

 

[Cruize]

Yeah when I got the car it had a bleed valve fitted and also found a resister connected to some of the wiring, obviously to fool the ECU into thinking it's running less boost than it is so u can keep pumping the boost up. The valve had always been closed and as normal runnin 10psi I opened the valve just under a quarter of a turn and boost went up to around 1bar, what I found was it boosted up t0 14psi then as soon as it hit, it drop back down to 10 and held there.

 

[markillo]

yeah.... i have the ECU and im running 16psi...

 

[Cruize]

Does the same thing happen? does it boost up then drop or does it hold?