Bouncy rumble idle; What do you think of my solution?

**cobrAA** · 10-23-2011, 06:09 AM

So, I have a new engine with Poncam, I know the idle can be a bit rougher but I think it's over exagerated right now.

1) Swapping my Blitz BOV for 2 Synapse anti-stall BOV, because yes I do stall almost, at least 1x every ride.

2) I had a deep cycle battery Kinetik before, went for a Optima REDTOP and had my alternator rebuilted/cleaned. But maybe the Redtop simply can't take the load and I should go back to a Kinetik.

3) Have a catchcan installed to remove the pcv valve.

4) Install new tranny mount( because I can feel the tranny kinda shaking.. or it's the engine making the tranny shaking ..)

5) Install an engine torque stuff from ebay.

Think it could help!? The only thing is that I love the sound of the Blitz SS BOVs and would like to keep it the same ( it's louder than HKS super-tight sounding)

**gtrjon** · 10-23-2011, 07:14 AM

the bovs might do it. but there is no way a optima redtop wont be able to support the load your putting on it if its holding a charge. tranny mount wont do anything and the shaking is prob the motor shaking as the rpms drop. and finally engine torque stuff from ebay wont do anything to help your idle... id start with the bovs and go from there.

**cobrAA** · 10-23-2011, 01:07 PM

engine torque for the shaking I get. and the kinetik because i have a sound system.

**trickey1991** · 10-23-2011, 01:53 PM

Bov is probably the issue that's what mine is

**Zacho** · 10-23-2011, 02:08 PM

How much ignition timing are you running at idle? too much can give your car some good shaking action & bounce around very oddly.

**Skym** · 10-23-2011, 03:46 PM

Quite a few things come to mind.

Leak between flange, main body on BOV (flange not sitting flat) or flange has come loose due to not tightening screws enough.

Turn off narrowband o2 sensor and see if problem stops (o2 sensor makes ECU run engine rich, lean and idle stabilisation tables adjust ignition timing to suit).

Check AACV to ECU idle rpm adjustment (both at same idle rpm)

Running too thick engine oil and engine struggles to idle. Thinner oil stopped it from happening.

**DreadedFist** · 10-23-2011, 10:26 PM

Synapse once claimed that compressor surge is literally the turbo spinning backwards. Ergo, they'd never get my money. Put the stock BOV setup back on and see what happens.

**Skym** · 10-24-2011, 01:18 AM

Never had a problem with their BOV for over 1 year. Still runs the same as when we installed it. The main problem is not installing BOV correctly which makes it malfunction. Also not using Synapse boost connect kit, etc (aftermarket hoses are too big). The flange not sitting flat was one problem we encountered, but solved with one person holding flange in place while the other tightens screws. The clamp type flange version of their BOV is in my opinion better.