sebTeggy

This is only for people running a b18c1 with a stock manifold and their butterflies active.

I hear vtec at 4500 and it is very pronounced, but no audible or noticeable 'kick' at 5800 for the IAB.

I have read threads and have been told that hearing that vtec at 4500 is typically more difficult to distinguish when compared to the very NOTICEABLE IAB at 5800

I just got an intake and an exhaust.

Do you guys hear both? 4500 and 5800? Or just vtec at 4500?

I am wondering if my IAB are opening properly. I will do a vacuum check tomorrow.

R.sok

Before I changed my manifold I could hear it just fine. Slightly noticable difference at 4500 then at 5500 it was loud. This was with header & intake

Local

First not so noticable, second very noticable.

sebTeggy

wow i have first = noticable, second = nothing

I gotta figure something out.

Ryan96GSR

I notice mine at around 4400 and it gets louder at 6000.

slateEKsi

2000 gsr-- my iab clearly opens at ~ 4k rpm followed by my even more obvious vtec engagment at 5800 rpm. it should happen in this order if its stock

sebTeggy

U have it backwards


And my iab solenoid is getting no vacuum, so it is constantly open? Any tips to why?

I just swapped and wired this. It's an obd2 gsr motor,

I got the red wire from the plug going to a17 and the other black wire going to ground.

Thanks guys

sebTeggy

Im looking at the service manual, and it says that pink/blu goes to ECU and black goes to PGM-FI relay, but mine is grounded. Unless PGM-FI relay is ground? ...............

NotTheITR

Wait, it makes 2 separate noises?!?
Mine just cracks and then get smoother later

JdmTypeRdc2

iTrader: (1)

Yea, the butterflies are usually distinctively louder than the vtec engagement. It's barely audible at 4400 while at 5800, the car is noticeably loud.

sebTeggy

Ill post a youtube video when its done. 2 stage will be so sick

NotTheITR

Haven't smashed in a while, but now that I think of it, you're right