Is the APR R1 supposed to honk?

Reply Subscribe

Thread Tools

Search this Thread

Oct 5, 2007 | 03:28 PM

JettaRedII

Thread Starter

AudiWorld Member

Joined: May 2006

Posts: 117

Likes: 0

Is the APR R1 supposed to honk?

I opened up my airbox by essentially cutting out the end away from the engine. Now it gets unrestricted airflow to the stock filter. However, you can hear everything on the intake more clearly. Not as bad as a cone filter, but close.

The problem is now at part throttle, I hear a hum or honk that sounds like diaphram vibration. I swapped in my Forge 007P and the noise goes away. I really liked the R1, but don't like the noise. I opened it up and the diaphram looks intact (the thing is brand new), so is this just the characteristic of a diaphram type DV?
__________________
2004 Audi TT 225Q GIAC, APR R1, Neuspeed 19mm RSB
2001 Audi A4 1.8TQ GIAC K04-15 Hammer, Racetec FMIC, Aquamist WI, TTT Downpipe, 710N, Dieselgeek SS, South Bend Clutch Stage 3
1999.5 Audi A4 1.8TQ Neuspeed 1 Bar, 710N
2000 Audi A4 1.8TQ GIAC, 710N
2003 GTI 1.8T Black SOLD 2000 Supercharged JettaRed DEAD

Oct 5, 2007 | 03:30 PM

Qu!cksilva

Junior Member

Joined: Mar 2000

Posts: 4,404

Likes: 1

Send it back to APR

they put in a stiffer spring..mine honked..they blamed it on pressure drop due to a FMIC that could be too big???

Oct 5, 2007 | 04:13 PM

ClarkSJ

AudiWorld Senior Member

Joined: Apr 2006

Posts: 1,329

Likes: 0

Mine did. It's been back to APR for replacement for over a month.

and no FMIC

Oct 5, 2007 | 04:24 PM

JettaRedII

Thread Starter

AudiWorld Member

Joined: May 2006

Posts: 117

Likes: 0

The green Forge spring feels stiffer

Well, I did a test with 3 lb weights setting on top of the springs and found the weakest Forge spring (green) is stiffer than the R1 spring. I will start with that one and see if it makes a difference.

Oct 5, 2007 | 04:31 PM

ZGTT

AudiWorld Super User

Joined: Jan 2002

Posts: 19,262

Likes: 0

yes, I had one and it honked on part throttle. Took it out and went back to the forge dv.

Oct 5, 2007 | 05:11 PM

JettaRedII

Thread Starter

AudiWorld Member

Joined: May 2006

Posts: 117

Likes: 0

Green it is!

Well, I replaced the spring with the green spring out of my Forge kit. The green is the weakest Forge spring, but it is still stiffer than the spring that comes with the R1. No more honking and back to smoothness!