need advice from ms6'rs with bnr s3

[wes3id]

Expecting my BNR S3 in the mail tomorrow, was doing some reading about not going above 24 psi due to blow by/dipstick popping. i have a single JBR catch can non vta. would getting a pcv plate and vta valve cover be sufficient? i don't currently have and problems with oil in my intake or intercooler and my dry compression is 176 across all 4. any suggestions or advice would be helpful

[wes3id]

also, will a 3.5" intake net me anything substantial over the 3" i have currently?

thanks guys

[dale_gribble]

3" is fine. I'm flowing 24psi, ~350g/s and maf sensor is only around 4.5 volts.

Btw, never popped a dipstick.

[Vansquish]

Originally Posted by wes3id also, will a 3.5" intake net me anything substantial over the 3" i have currently? thanks guys

Originally Posted by dale_gribble 3" is fine. I'm flowing 24psi, ~350g/s and maf sensor is only around 4.5 volts.

Depends on where you live, but as long as your intake has an ID of at least 3", you should be just fine in most places at most times of the year.

My CP-E Nano has a 2.715" inner diameter (I busted out the calipers and measured), and I'm hitting MAF cut at about 365g/s at ~24psi in cold weather.

Once you go to a 3.5" ID or above, the aggressive scaling, and loss of granularity on the MAF curve tends to mean that drivability goes downhill pretty quickly at low revs and low load.

Oh yeah, haven't popped a dipstick yet myself, and I'm running a non-VTA JBR OCC from the PCV plate, as well as a non-vented JLT OCC for the valve cover breather.

[Nitro]

I am running 25 psi and have not had any problems with the dipstick blowing out.

[mituc]

I'm riding the limit of a Bosch 3BAR (300-305kPa, so 29-29.5PSI) and never had the dipstick move. The intake is relatively dry where the PCV hose connects to it and because I'm on the factory PCV system I'm losing quite a bit of power, but that's a different story.

Check your compression, if it's good and the PCV and the rest of the crankcase ventilation system is sane you will not pop a dipstick that easily.

[wes3id]

update: 2nd revision of full freektune with newly installed BNR S3 pushing 20 psi, justin tells me i'm maxing my MAF voltage at 17 psi with my POS Sure full 3" aeros intake....ordered JBR 3.5" wide path.