I've done some searching on the subject and it seems this problem is somewhat common although I have yet to find an answer.

Any time I come out of gear in my car, clutch in or in neutral my idle will drop like a rock. Most of the time it will keep running although it stalls at the most inconvenient times.

Video:
http://i268.photobucket.com/albums/jj16/yfz45094/AF55D3CD-FC34-4353-85EB-F28D412FC50C-4573-0000033A146C95DE.mp4

Modifications include:
Evo 9 turbo
JMFab O2 housing
3" full turboback exhaust. DC Sports downpipe w/ apexi n1 stainless exhaust and titanium muffler
PIC coilovers w/apexi swift springs
Kelford 264 camshafts
Skunk2 intake manifold and billet throttle body
ARP headstuds
AEM cam gears
AEM fuel rail
Injector dynamics 1000cc injectors
JMFab small battery kit
Odyssey FMJ battery
Buschur street FMIC
Synapse syncronic bov
Tomei upgraded wastegate
ARC air box
Custom intercooler piping and maf tube
Custom grounding kit
Halman boost controller
DBA slotted rotors
Hawk HPS pads
Exedy MM022HD twinplate heavy duty clutch kit with flywheel

 

Subbed for responses, I've been dealing with the same issue for years. Just finished a build and still having this issue. Seems to happen sporadically and more often when colder outside for me. GL

 

What's your idle set at? Maybe the Kelfords could be a cause?

 

I believe the idle is set at 1100

 

Did u check all vacuum lines and couplers for any leaks?

 

Mine did this through several tunes, finally after my last tune done by Franz Diebold it was resolved. This issue is in the tune. If you come to a stop and leave it in gear until 1000-1100rpm does it idle well and not stall? If yes, its the tune. I would offer my settings but it probably wouldn't help since I am running an Autronic.

 

is your bov recirculated?

 

I had a this problem when i installed my tial bov its def the bov talk to your tuner they should be able to tune your car to work with the bov as opposed to your stock diverter valve

 

Not trying to hijack but......


I've got a tune coming up after my motor break-in and this issue is going to be one of my concerns i'll be addressing with the tuner. BTW my BOV is VTA as well.

 

For the record I did a boost leak test and it passed perfectly the system held in 30 psi just fine.

Also my synapse's is set up to recirc.

And on top of this I'm not sure if it's related but I'm also getting some real bad gas mileage lately.

 

Any more opinions? Tune issue is the only answer then? I've had this problem with my evo since I bought it and have just adapted how I drive to prevent it, but if I can fix it somehow that would be nice haha.

 

I would like to know too i think it could be cams although I am more aggressive with 272s, I just got retuned on e85 and its better but not fixed I may go back to have them look at it

 

I have the same issue changed a bunch of stuff iac tb egr bov and still have it. I am also recirc the bov.

 

Same issue here... about to junk the aem v1 to go back to stock ecu in hopes of resolving the issue.

 

Clean your IACV. its the sensor under your throttle body.