mod advice!!!!

[clive]

Hi Mr DC-TYPER,

Real cheap cheap things you can do are, fit a short fan belt and remove the air pump by putting a bung up the rubber pipe that goes in the back of the air pump ( this saves the cost of the blanking plates and stripping the top manifold off)

As has already been said, you can pull of a blow off valve pipe where it goes into the back of the stock air box for some "whoooosh" if you want it.

Fit a K+N AIR filter as this is cheaper than an aftermarket filter kit and also is probably more effective as you don\'t draw in cold air.

As for other mods without an upgraded or replacement ECU , you can do the above plus remove the cat for a replacement plain pipe and fit an aftermarket cat back silencer system but that really is it on a stock ECU.

As for the intercooler, Rotechnicks used to do a trick on their cars that had their upgraded intercooler fitted with stock ECU by fitting a stronger spring on the actuator which apparently stopped fuel cut but with what we all know now this is probably unwise ( sorry Nick)  

If I was you do the real cheap stuff at the top then I would save yer penny\'s and buy an Apexi PFC then an intecooler which will probably be avaliable from Nick by then

Hope this helps

[vxer]

i done this for a while but its a constant noise when you get going.

Thats odd - shouldn\'t it only be a noise when it dumps boost on a gear change?

Can you elaborate?

Ta, Paul.

[Stu.Wilson]

Thats odd - shouldn\'t it only be a noise when it dumps boost on a gear change?

Can you elaborate?

Ta, Paul.

It probley the Charge relief valve making the noise (fit\'s on to the rear section of the Y pipe, dump valve is fitted on the Y pipe just below where it joins the IC elbow), as mine doe\'s this when i\'m driving normal.

With regards to the uprated IC,  as vixer says you have to be carefull with your mixture\'s, last thing you want to do is run lean! and pop your engine. I\'d still say PFC then work on from that (I promise i don\'t work for Apexi! haha)

Cheers Stu

[DC-TYPER]

Thats odd - shouldn\'t it only be a noise when it dumps boost on a gear change?
 
Can you elaborate?
 
Ta, Paul.

your right, it does. but when i get to a constant speed on the mway, you can hear air rushing through. it does dump when you take your foot off though!

[vxer]

It probley the Charge relief valve making the noise (fit\'s on to the rear section of the Y pipe, dump valve is fitted on the Y pipe just below where it joins the IC elbow), as mine doe\'s this when i\'m driving normal.

Ah, now i\'m slightly more confused! I always thought the two dump valves (one for each turbo) were just before the airbox t\'ed into two of the smaller pipes?  :confused:

Cheers, Paul.

[Stu.Wilson]

Ah, now i\'m slightly more confused! I always thought the two dump valves (one for each turbo) were just before the airbox t\'ed into two of the smaller pipes?  :confused:

Cheers, Paul.

Sorry matey, on the Y pipe you have two valves one is the dump valve and the other is the Charge relief valve. We all now what the dump valve doe\'s, but the charge relief valve, basicaly allows the 2nd tub to spool up before it cuts in. So when your driving along between 3500-500rpm you will hear the charge relief letting the pressure out from the 2nd tub and as soon as it kicks in you should not here it no more. (i\'m pretty sure i\'m corrrect in what i\'m saying. If not i\'m sure i\'l get corrected soon, LOL) You can see the charge relief valve on the pic below, note though where the DV is usualy placed it is capped off with the black cap next to the Y in the word \'Y-Pipe\'.

DC-Typer = If you still hear the whoosing noise on WOT then you probley have boost leak somewhere, but the noise should def disappear after the 2nd tub kicks in.

Cheers Stu

[vxer]

Sorry matey, on the Y pipe you have two valves one is the dump valve and the other is the Charge relief valve. We all now what the dump valve doe\'s, but the charge relief valve, basicaly allows the 2nd tub to spool up before it cuts in. So when your driving along between 3500-500rpm you will hear the charge relief letting the pressure out from the 2nd tub and as soon as it kicks in you should not here it no more. (i\'m pretty sure i\'m corrrect in what i\'m saying. If not i\'m sure i\'l get corrected soon, LOL) You can see the charge relief valve on the pic below, note though where the DV is usualy placed it is capped off with the black cap next to the Y in the word \'Y-Pipe\'.

Hmmm, I think my confusion stems from the fact that i have a standard intake system.

In the following picture, i\'ve circled what i thought were the BOVs - are they?



Ta, Paul.

[Stu.Wilson]

The rear one is the charge relief and the front is the BOV. I think there is a few other posts on here about the charge relief valve. But it is the rear one that will be causing the hissing sound for DC-Typer if he has it disconnected from the Inducttion kit. On yours you won\'t hear it at all as it\'s plumbed into the standard box.

Stu

[vxer]

The rear one is the charge relief and the front is the BOV. I think there is a few other posts on here about the charge relief valve. But it is the rear one that will be causing the hissing sound for DC-Typer if he has it disconnected from the Inducttion kit. On yours you won\'t hear it at all as it\'s plumbed into the standard box.

Stu

Rightyo!

And the charge relief valve allows boost to be redirected, not exhaust gas?

I thought the charge relief was for allowing the exhaust gas to bypass the first turbo, so that above 4000ish, the first turbo doesn\'t spin (since the second has kicked in) thereby saving the first turbo from destruction. Or is that the job of some other device?

Sorry for all the questions!

Cheers, Paul.

[Stu.Wilson]

Rightyo!

And the charge relief valve allows boost to be redirected, not exhaust gas?

I thought the charge relief was for allowing the exhaust gas to bypass the first turbo, so that above 4000ish, the first turbo doesn\'t spin (since the second has kicked in) thereby saving the first turbo from destruction. Or is that the job of some other device?

Sorry for all the questions!

Cheers, Paul.

The charge relief valve opens around 4kish and allows the 2nd tub to spin up and therfore stopping any flat spots occuring when the door opens in the y pipe from the 2nd tub.

Stu

P.S not a problem with all the Q\'s, i guess we are sort of high jacking his thread too! haha.

[vxer]

The charge relief valve opens around 4kish and allows the 2nd tub to spin up and therfore stopping any flat spots occuring when the door opens in the y pipe from the 2nd tub.

Ahhh, ok....

P.S not a problem with all the Q\'s, i guess we are sort of high jacking his thread too! haha.

Cheers, Paul.

[DC-TYPER]

ive done this and your right, it does stop, thanks guys.  the woosh isnt the right sound im looking for so i put it back on
 
i tell you what i do like, the dump valve sound off rally cars. anybody lnow where i can get that from? will i need ecu upgrade for that?

[vxer]

ive done this and your right, it does stop, thanks guys.  the woosh isnt the right sound im looking for so i put it back on
 
i tell you what i do like, the dump valve sound off rally cars. anybody lnow where i can get that from? will i need ecu upgrade for that?

Just to clarify so we\'re absolutely sure - originally you had disconnected the back on (in my pic)?

Cheers, Paul.

[DC-TYPER]

I Diconnected The Lower One From The Air Box

[vxer]

I Diconnected The Lower One From The Air Box

Thats odd, because that is the correct one. It was mentioned that maybe there is a screw on the back of this which adjusts the noise?

If i understand things correctly, it should only vent on a gear change and not continually hiss when at high speed - this suggests to me that the valve isn\'t tight enough. Does this seem reasonable to anyone else?

Cheers, Paul.