Loud blowoff valve

[andy10v]

It won't mess with the engine management system at all. You can fluctuate it between 25% and 75% either way

Surely it will mess the readings up, just 25-75% less so than a 100% atmospheric dump? IE possibly not easily noticeable, but still not ideal?

[Big Lee M]

Well if it was that bad MTM would never have used it after spending all that money on research??? But who knows, but then again a lot of people post about things that you'd never be able to feel the difference between?

[QuattroFever]

ah, that'll be why. I had a U bend on mine. never tried without. hated having a U bend in there but guess if I had gone the trouble of getting rid would of been a wasted effort anyway.

[fish]

I am with PRJ on this one... I could actually feel quite a difference with a pipebend vs non pipe between filter and MAF.

[prj]

Needs heat shielding but as long as the maf has the mesh inserts and it's an oilless filter it should be ok.

It's not, you need a tube between the MAF and the filter. If you just stick a cone onto the stock MAF, you'll get wonky readings.
BTDT many times.

[QuattroFever]

Needs heat shielding but as long as the maf has the mesh inserts and it's an oilless filter it should be ok.

[Deception]

Thanks for all the replies so far, guys!

I have to ask you one question.
Is some sort of ricer sound worth making your car slower?

Because fitting a cone filter will make your car slower, as it'll suck hot air from under the hood, unless you make a proper CAI.
Also, if you fit a cone filter on stock MAF, it won't read right, so your car won't run quite right.
Finally, dumping any excess air to the atmosphere will make your car slower through the gears.

Well, here's the story... My car currently looks very plain. Someone might as well think it's an A6 2.0 16V Avant. Unless, of course, they're more Audi-knowledgeable and take note of the inflated fenders of the S6...
Yes, it will run slower. But have you thought by how much? I think it will be barely noticeable if at all. Only the stopwatch will make the difference... The turbo makes pressure instantly even if all air is dumped.

[prj]

OK, what if I fit in a K&N cone air filter and shield it and a Forge Splitter valve? So this way if I dump 75% of the pressure in the inlet, those 25% left will be enough to keep the MAF in check and avoid fueling overinjection?

I have to ask you one question.
Is some sort of ricer sound worth making your car slower?

Because fitting a cone filter will make your car slower, as it'll suck hot air from under the hood, unless you make a proper CAI.
Also, if you fit a cone filter on stock MAF, it won't read right, so your car won't run quite right.
Finally, dumping any excess air to the atmosphere will make your car slower through the gears.

[QuattroFever]

I have a cone filter setup for sale if you want. Not after much for it. Pm me.

[Rusty]

Try the filter first and see what you think.

[QuattroFever]

...something like a BMC CDA...

wow, I had one of those years back what a pain in the wallet that was! Worked great but I just couldn't justify it and took it back like a tight Asre

[Deception]

OK, what if I fit in a K&N cone air filter and shield it and a Forge Splitter valve? So this way if I dump 75% of the pressure in the inlet, those 25% left will be enough to keep the MAF in check and avoid fueling overinjection?

[Big Lee M]

I've just edited it so I hope it is a bit clearer?

[Rusty]

You don't want a cone filter but you do want something that will effectively act like a boost leak

A properly shielded and cold air fed cone filter is as good as an airbox, something like a BMC CDA will do a good job. 007 is a recirculating valve and is no louder than OE, it's the airbox mods that allow the noise to be heard due to less damping by the OE box, even just a panel filter will allow more noise.

[Deception]

You could use a Forge splitter valve, the are atmosheric and recirculating and you can change them 25/75 and thought to 75/25 so it won't mess with the car. Nothing wrong with a valve if they sound good, each to there own I bet a lot of people who say they are chavy and ricer have had one at some point!

You mean it won't mess at all or it will mess a bit?

I ran a GFB adjustable valve for a bit and the car ran ok with it on minimum vent to atmosphere but it wasn't as good as a recirculating valve and was crap on full atmosphere, so I sold it and refitted my Forge 007. You can increase noise with airbox mods or a cone filter

Is the Forge 007 nearly as loud as a loud BOV? I am not sure I want a cone filter as it will suck hot air from the engine compartment...