Forge 007 causing surging!?

**stilldubbin203** · 09-06-2008 12:16 PM

ok i installed my forge 007 on my 99 a4 and now im getting really bad surging when i let off the gas (rpms drop to around 300, sometimes stall and then go back to around 1000 or so) I tried it with every different springs, shims, and even backwards and it doesnt help it. I put my stock one back in and it runs perfect. Has anyone else had this problem or heard of this and possibly know what to do to fix it?

**Seerlah** · 09-06-2008 12:21 PM

Sounds more like the diaphram inside needs to be serviced. Take out the DV, take a rag and wipe the entire DV. Then grease (mobil 1 synthetic) the outside of the diaphram (I use a pretty nice amount to keep my mind safe knowing that I placed enough), inside wall of dv and a little around the top rim of the DV. Use the yellow spring, seeing that you have a k04 and all should be well. But it seems like the diaphram of the dv is not sliding well and needs servicing.

*note-the forge dv is supposed to be serviced at least once a year

**stilldubbin203** · 09-06-2008 12:41 PM

It's brand new, I don't think it had to be services

**Mike@Forge** · 09-06-2008 01:24 PM

How many pounds of boost is your setup making?

Chip? Exhaust? What other mods?

**stilldubbin203** · 09-06-2008 01:29 PM

Im running 22 lbs on a tapp tuned gt2871r elim

**Mike@Forge** · 09-06-2008 01:43 PM

My suggestion would be to use the Yellow spring with 1 shim installed in either orientation.

It should work fine.

The only issue might be if the cap isn't tight and there is a leak or one of the o-rings isn't sealing or possibly a leak with the vacuum line to the top of the valve. Just pop out the piston to double check it before you reinstall it and then check that line.