Mk1 1.8 20v 180bhp dump valve

[Liam180cupra]

Hi guys
New to the forum.
Im thinking of a dump valve and cone filter intake.
All the ones online are very quiet when it comes to the dump valve.
Anyone know good places to look or can advise.
Also with the air intake can anyone advise?

Cheers

 

[mty12345]

'Hi mate, welcome to the forum. You can't fit an atmospheric dump valve to vw engines. Only the recirculating type that don't make a "tssh" noise.

 

[Alexis27]

You get a bit of a hiss with a Forge 007 or 008 recirc valve. Better than stock at least

 

[Bigjohn84]

Go with the 007/008 forge dv. Dont get the atmospheric dv as they are prone to leaking

Sent from my GT-I8190 using Tapatalk

 

[Liam180cupra]

Cheers for the info guys.
One of my friends has a bora with the same engine in.
He has a vent to atmosphere dump valve on his?
Ill take a look at the forge dv

 

[DrewCole]

You can get a split recirculating valve, which is possibly what your friend has.

This recirculates enough to keep the MAF happy and vents the rest to atmosphere, although they aren't massively loud so removal of the bonnet lining is a good move if you want more noticeable noise.

I have one fitted to mine and it's quite nice when driving normally, but then gives a good noise when pushing it.

With regards to filters, if you fit a induction kit you will need a heat shield to reduce the amount of heat soak you'll suffer.
The best option would be to fit a good panel filter and drill some vent holes into the cold side of the standard airbox and even fit a dedicated cold air feed plumed directly into the airbox.

 

[ibizacupra]

fit the induction kit first.. if unmapped and std boost there will be minimal noise.. Not much to vent..
recirc ftw

 

[Bigjohn84]

Look up CDA induction kit on eBay, pretty exspensive but well worth it, these cone filters people use just look stupid and they get a lot of heat even with a shield, I had a K&N open filter before sounded great with the forge DV, but now I have the CDA Kit and it sounds even better sounds like an Audi RS taking off lol that signature noise they have,, totally up to you tho and depends how much money you wanna spend

 

[Liam180cupra]

Cheers for the info. Massive help.
Turbo petrols are a new thing for me.
What do u get out of these on a remap?
I want comfort and quiet motoring after having a ridiculously loud and uncomfortable car. Just want a nice quick car.
All advice welcome

 

[andycupra]

remap to around 205. torque increase is more.

RE dump valve. the air entering the system is measured via the maf, (immediately after the air filter).
The ECU calculations for fuel/air mixture is designed that the DV diverts rather than dumps, if you dump to atmosphere then you are altering the quantity of air in the system which could effect either the fuel air mixture or be detected as a leak.

better off going cone filter for noise, but your last post suggests you want a quiet car...!?

 

[Bigjohn84]

Cheers for the info. Massive help.
Turbo petrols are a new thing for me.
What do u get out of these on a remap?
I want comfort and quiet motoring after having a ridiculously loud and uncomfortable car. Just want a nice quick car.
All advice welcome

For everything I've done to my car it's still on the quiet side, not to Loud just really nice, wouldn't have it any other way.

 

[Liam180cupra]

Yeah im just looking for a nice noise which the cupra exhaust is good enough. Just want abit more turbo noise

 

[ibizacupra]

Look up CDA induction kit on eBay, pretty exspensive but well worth it, these cone filters people use just look stupid and they get a lot of heat even with a shield, I had a K&N open filter before sounded great with the forge DV, but now I have the CDA Kit and it sounds even better sounds like an Audi RS taking off lol that signature noise they have,, totally up to you tho and depends how much money you wanna spend

Sorry dude, but BMC CDA looses airflow to the tune of 15bhp on a 300bhp LCR/S3
Avoid like the plague

Open cone and heatshielding flow far more

 

[Liam180cupra]

I would have thought heat soak wouldnt be much of a problem?
Seen as though they are intercooled engines.
Also the air is going through a hot turbo anyway?

 

[Bigjohn84]

I would have thought heat soak wouldnt be much of a problem?
Seen as though they are intercooled engines.
Also the air is going through a hot turbo anyway?

well I was meant to get 30bhp when mapped and got 27bhp, and to be honest it Dosnt mater what filter you have on the car as it Dosnt make a difference to the power of the car, watch this on you tube these guys are great, watch this video plus some of the others they have.

http://youtu.be/gCi2yo4UqPI

 

[mty12345]

I would have thought heat soak wouldnt be much of a problem?
Seen as though they are intercooled engines.
Also the air is going through a hot turbo anyway?

Heat is always the enemy when it comes to intake air. If the air going in to the filter is 5 or 10C hotter, then that's 5 or 10C hotter all the way through to the cylinder.

With regards to the turbo,it's very hot on the exhaust side, but the high speed and high volume of the air flowing through the compressor side, means that the air isn't heated much by the actual compressor wheel/housing at all.

The vast majority of the heat generated by the turbo is just from the effect of air itself being compressed. So the intake temp of the air at the filter accounts for a high percentage of your final intake temps into the cylinders.

Any filter that does the job of cleaning your air, without causing a restriction to airflow, will be pretty much the same as the next. Any power gains/losses come mainly from the temp of the air feed to the filter. The colder the better, simple as that mate.

 

[Liam180cupra]

The original airbox gives a nice noise anyway.
Was just wondering what would be the best with regards to changing or leaving alone.
Cheers for info

 

[mty12345]

Nothing wrong with the airbox setup until you get to big power. It all depends if you're after more noise or not really, if so then get an open cone, if not then stick with the airbox with a decent panel filter and put the cash towards a remap. That will give you lots more power and totally transforms the car, no extra mods are needed for stage 1 either, just the remap itself.

 

[Liam180cupra]

Got a decent panel in it already.
Got my remap booked.
What you guys paid?
Cheers

 

[Bigjohn84]

£150 for map at AMD when I bought the Milltek exhaust