Since I retimed my cams from 1.9mm to 2.1mm, I've added a bit more kick at low end. Another benefit is that my turbo comes up quicker as well. For example, before the timing, it provided 1 bar at 4100rpm. I wrapped the header and lowered that 3900. I advanced the cams and got 200 rpm - now 3700 rpm. Yesterday, I played with fuel enrichment by adding MAP enrichment in addition to the TPS movement. So, now when the ECU detects more than 2kpa vacuum increase per second, it provides .25ms of addition injector pulse width over .75 seconds. These seem like small numbers, but what a difference in drivability and what a kick from cruise. The other benefit - another 100 rpm lower for 1 bar boost. According to my datalogs, I am now producing 1 bar just before 3600rpm.

 

You are absolutely right.....that little increment makes a big difference. I remember back about 11 years ago with my first 930. I had the SC cams installed (a big deal in those days) and had the cam timing set up at 1.7 mm. The motor was pretty sensitive. It was cool for me except that the boost would creep up unwantingly when barely pushing the gas pedal and trying to cruise. I had the cam timing backed down to 1.55 mm and just that little bit smoothed out the whole motor from unwanted boosting to smoother idle too. I was running a G50 too which added to the equation as well.

Which cams are you running?

 

Super C2 by Elgin Cams

 

Super C2? Bigger lift than the stock C2 I imagine....more duration too. Sweet.