Blowoff Valve for Audi A4 B7 2.0T
Thread Starter
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Junior Member
Joined: Mar 2008
Posts: 29
I do have the Carbonio and yes it makes the car sound "louder". When asked if it makes and rear HP gains I always say its like getting new tennis shoes when your a kid.
It makes you think you are running and jumping higher even if your not.
I am always looking for ways to gain more hp/tq, but some of the enjoyment of driving a car is the feeling that it gives me. I like the sound and feel of the car.
A Carbonio may not get you any real hp gains but it makes the experience so much more fun in my opinion!
It makes you think you are running and jumping higher even if your not.
I am always looking for ways to gain more hp/tq, but some of the enjoyment of driving a car is the feeling that it gives me. I like the sound and feel of the car.
A Carbonio may not get you any real hp gains but it makes the experience so much more fun in my opinion!
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Junior Member
Joined: Mar 2008
Posts: 29
What do you mean? The intake did take out turbo lag I had in my car A4 unless if it just needed to be driven more, because I bought it new and it has 3k miles now...
2nd Gear
Joined: Apr 2008
Posts: 548
From:
intake has nothing to do with turbo lag......thats not how a turbo works
turbo lag happens when the engine rpms are lower then what is needed to make the turbo spin fast enough to create the proper amount of pressure to up the air to fuel ratio which gives a turbo its power. basically sitting at idle there is a vacumn in your manifold (about -8psi)....then u press on the pedal and the exhaust vapor spins the turbine which creates the pressure (normally 12 psi) which then makes ur car have x amount of hp depending on how much boost and other mods u have and so on and so forth, but during the time it takes to go from a vacumn (-8psi) to a pressure (12 psi) there is a considerable amount of ''turbo lag'' which is your engine's normal performance without the turbo
next time ur driving......stop....put it in 2nd and once u have the car rolling.....floor it....it will be dead until the needle hits about 25-2800 rpm and then boom you will feel the torque, and the whole car suddenly come to life
turbo lag never goes away
intakes don;t get rid of turbo lag
turbo lag happens when the engine rpms are lower then what is needed to make the turbo spin fast enough to create the proper amount of pressure to up the air to fuel ratio which gives a turbo its power. basically sitting at idle there is a vacumn in your manifold (about -8psi)....then u press on the pedal and the exhaust vapor spins the turbine which creates the pressure (normally 12 psi) which then makes ur car have x amount of hp depending on how much boost and other mods u have and so on and so forth, but during the time it takes to go from a vacumn (-8psi) to a pressure (12 psi) there is a considerable amount of ''turbo lag'' which is your engine's normal performance without the turbo
next time ur driving......stop....put it in 2nd and once u have the car rolling.....floor it....it will be dead until the needle hits about 25-2800 rpm and then boom you will feel the torque, and the whole car suddenly come to life
turbo lag never goes away
intakes don;t get rid of turbo lag
1st Gear
Joined: Aug 2009
Posts: 9
From: Maryland
BOV spacer
Dude, I bought a blow off valve spacer from forge for my 2005.5 or .2 depending on who you ask. It sounds awesome. Car's sound dampening makes it so you can't hear it really, but windows down it sounds great.
Also I get people's heads to turn.
Here's the thing, it's "simple" to install. But a bitch to reach. You have to come from above with some sort of hooked screw driver to get the sensor off. After that its easy. You plug the diverter valve back into it then screw it all back on and plug the sensor in.
Now since the diverter is still kind of plungered in it real fast shifting or if you have an automatic won't make a sound. But quick, slow, or partial releases of the accelorator make awesome sounds.
Also I get people's heads to turn.
Here's the thing, it's "simple" to install. But a bitch to reach. You have to come from above with some sort of hooked screw driver to get the sensor off. After that its easy. You plug the diverter valve back into it then screw it all back on and plug the sensor in.
Now since the diverter is still kind of plungered in it real fast shifting or if you have an automatic won't make a sound. But quick, slow, or partial releases of the accelorator make awesome sounds.
1st Gear
Joined: Apr 2007
Posts: 50
I agree with jasondmaguire, value is in the eye of the beholder. I have the Carbonio intake and Forge DV, and although they don't provide huge power gains they make the car much more enjoyable to drive. Yes the Carbonio is pricey, but you can find it discounted at most places and if you can afford it I think its the best route to take. Just about everyone that rides in my car comments on the wonderful "whooshing" sounds of the turbo. Adding in the DV made it that much better.
1st Gear
Joined: Oct 2009
Posts: 10
Not seen one on an Audi, but I used to have a HKS SSQV dump valve on my Evo, not only did it make the car much less smooth to drive (and they are not exactly easy cars to drive in town to begin with), but if you dipped the clutch suddenly it would sometimes stall because the ECU was expecting unmetered air to enter the intake from the standard recirc, but it was instead being vented to atmosphere, causing the car to run rich and stall, not good!
Also, after a while the noise gets annoying, so I ended up buying a metal recirc. Car drives MUCH smoother now, and now it's been mapped with anti-lag the recirc helps with that too!
All considered, not worth it IMHO, just glad I only paid £60 for it 2nd hand from a guy on the Evo forums opposed to £250 new!!
@ RedA4RedCalipers, $1000 for a fuel pump?!?! You sure?? For the Evo's you can get 255 lph Walbro ones for £90 + delivery, then obv fitting on top, but even then, it'll be less than £250 total, and that involves dropping the whole tank, so it a bit of a job. Anyway, adding a greater capacity fuel pump wont increase power, all it means is that the car will constantly have a sufficient supply of fuel when running greater boost, etc.
Also, your bro's Evo will pretty much always be quicker unless you get a bigger tubby and remap to match, however if your doing that, id also be fitting better cams at the same time.
If you have not done so already, I would say next step is a de-cat or high flow cat to help reduce the back pressure and free up some more power, but don't expect large gains, just a few extra ponies.
Also, after a while the noise gets annoying, so I ended up buying a metal recirc. Car drives MUCH smoother now, and now it's been mapped with anti-lag the recirc helps with that too!
All considered, not worth it IMHO, just glad I only paid £60 for it 2nd hand from a guy on the Evo forums opposed to £250 new!!
@ RedA4RedCalipers, $1000 for a fuel pump?!?! You sure?? For the Evo's you can get 255 lph Walbro ones for £90 + delivery, then obv fitting on top, but even then, it'll be less than £250 total, and that involves dropping the whole tank, so it a bit of a job. Anyway, adding a greater capacity fuel pump wont increase power, all it means is that the car will constantly have a sufficient supply of fuel when running greater boost, etc.
Also, your bro's Evo will pretty much always be quicker unless you get a bigger tubby and remap to match, however if your doing that, id also be fitting better cams at the same time.
If you have not done so already, I would say next step is a de-cat or high flow cat to help reduce the back pressure and free up some more power, but don't expect large gains, just a few extra ponies.
Last edited by H3rmaN; Oct 8, 2009 at 07:54 PM.