New to NH, but not New England

[LiquidCipher]

HM Motorworks is considering becoming a REVO dealer. To do so, he'll have to pay out a dealer fee of $5000.

If you can get 1 or more people to buy a tune in addition to yours, he will take the plunge and pay the fee. Your tune and the tunes of those 1 or more getting done with you, would be $500 flat, as an intro price.

@liquidcypher
Edit: I guess Scott's username isn't active anymore.

God edit: or you could try spelling it correctly [MENTION=6936]LiquidCipher[/MENTION]

I'll let everyone I know, know about that. I'll see what I can do about getting that number up there for him. Revo is supposedly the more aggressive tune. I liked my APR tune on my S4, but always wanted a JHM or Revo.

Well when it didn't work I went to the member list and checked under "L" and this is all I saw!

Apparently I don't exist.

He doesn't have 100 posts , so he isn't on the member's list . Knowledge is.power

I used the search feature , go advanced and under user name type the first 3 letters and the user names that start with that will pop up automatically .

Search Search Search and thar I am.

It's also good to know you guys hang out locally. I was wondering where the hangout was since I moved to Pembroke. I see tuned cars everywhere, but never parked together, just on the roads. Ill make a point to look for everyone at wallyworld.

[NHMR2]

I technically live in pembroke as well

[ShnowzaTrout]

don't take this as a stupid question because I just don't know the answer lol what is the real problem with taking my DV.off and going with a BOV. ive heard you're not supposed to have it vent to the atmosphere. what is the reason why i can't? is it a mechanical issue, drop in boost pressure, etc? it sounds corny, but I just love the sound of a nice BOV. heard I can get CLOSE to the sound by replacing the DV.

[Th3Juggernaut]

"The Audi turbo system is a closed loop system by which all unused boost that is spooled during off throttle and gear shifts must be re-routed within the system; it cannot be vented to the atmosphere due to the dependence on the MAF and ECU to properly read and interpret air flow dynamics within the intake tract. Therefore BOV's (Blow-Off Valves) are not used because they create a rich air/fuel condition (i.e. less air to fuel ratio) which will damage the catalytic converter, create soot on the exhaust pipes, and cause occasional misfiring (due to the purged air) which will result in ECU miscalculated timing adjustments and other errors."

[ShnowzaTrout]

well now I know. will the upgraded DV have that sound? I can't get a straight answer on that part. ive heard yes and ive heard no. now I'm assuming what you posted has to be for stock vehicles. I'm guessing if you mod and/or tune it, may not be completely true? like I said, I have no clue. just trying to learn.

[ShnowzaTrout]

I'm.also reading that it is possible to move the MAF to after the turbo so that it would account for all air coming in, on and off the throttle. that in turn would allow the ecu to run normally and the MAF to use to correct a/f ratio.

[Boosted Euro]

No vta ..


It depends on what kind of sounds your referring to. Your DV will never sound like a hks SS if that's what you want..lol

With bolt ons and tune you will be able to hear it. Most sound comes from the intake

[Boosted Euro]

http://www.youtube.com/watch?v=uKrZDGr03y4

[NHMR2]

get a 50/50 BOV/DV. you get a good portion of the metered air back, as well as the "cool" benefit of the loud woosh from the rest. a decent one you can adjust a bit to have for example 75% diverted back and 25% atmospheric. that's what I would recommend

[ShnowzaTrout]

it sounds corny and childish, but I am looking for both functionality and being aesthetically pleasing. the DV video you posted is exactly what I'm going for. if I can do that buy upgrading the DV and intake, then I'm fine with that.

still doesnt answer the question of moving the MAF to after the turbo instead of before it and if the "closed circuit" is still true when you start adding performance parts and tuning.

I obviously don't want to do anything that will blow up the motor or deem my car unusable. I def appreciate all the insight and help.

[Synical DSM]

If you moved the maf after the turbo, it would still be before the bov, so you'd lose metered air. The only way around this is by switching to a speed density setup.

[EuroTrash]

Do not move the MAF, it needs to be pre turbo for the same reasons a VTA blow off valve is the wrong thing to do. The motor will have high load/RPM misfires.

I have a OEM revision D diverter valve and a Neuspeed P-Flo intake (Filter on a stick, like every other intake). I can hear the "Psshhhh" sound very clearly, if that's what you are after that's the way to do it.

EDIT, The carbino intake has a nice CF box underhood that looks nice, and sounds like this (Stock DV, no BOV):

https://www.youtube.com/watch?v=s5G9OlSPFDw

[Cutlassjim]

it sounds corny and childish, but I am looking for both functionality and being aesthetically pleasing. the DV video you posted is exactly what I'm going for. if I can do that buy upgrading the DV and intake, then I'm fine with that.

still doesnt answer the question of moving the MAF to after the turbo instead of before it and if the "closed circuit" is still true when you start adding performance parts and tuning.

I obviously don't want to do anything that will blow up the motor or deem my car unusable. I def appreciate all the insight and help.

It does sound very corny. Form follows function, duh. And aesthetics is visual, I think you mean aurally pleasing.

A lot of people put MAF's after the turbo, it's called a blow through set-up taken from back in the day when you could either have a blow through or suck through carbed turbo set-up.

A few concernes though. The MAF has to be a hot-wire style and not a Karman type, and has to be physically robust enough to withstand the boost pressures you're looking to run. A LOT of people use the 3" or 3.5" GM MAF with a MAF translator box that will convert it's 0-5v output to whatever signal your ECU is looking for. I'm not a fan of the GM MAF though as it's output is very non-linear and requires a lot of tuning with a wideband to get an acurate airflow signal to the ECU.

A blow through MAF located after the BOV inlet (outlet on piping) will allow you to vent to atmosphere with no tuning hic-ups. Another benefit that is usually the driving force behind this mod is that it eliminates the pressure drop before the turbo helping with efficiency. And a turbo with no MAF in front of it is mega cool loud.

From the sounds of it you want a stock or upgraded stock style BOV with an open element air filter on your stock MAF. It's the airbox that's muffling all the BOV sound that you're looking for. My girlfriends Audi has a APR inlet pipe and a 3" MAF with a cone filter and it's loud as hell. We both hate it though and are looking for a stock airbox to put back in the car. The car will probably make a little more power with the stock airbox too as the Audi design is really nice.