Jeda
Well-Known Member
- Joined
- May 2, 2013
- Messages
- 522
- Reaction score
- 865
- Points
- 93
- Age
- 48
- Location
- Melbourne
- Members Ride
- WN Caprice V
I got my car back on Monday night.
Went for a short drive to just to see how it drove. I kept it under 2800 rpm as it was raining heavily and didn't want it to catch me out unexpectedly.
With this cam, the car rocks. Literally. At idle in park, and more so in drive when stopped. A bit too much for me to be perfectly honest, but can probably be tuned out.
When driving, a little flat spot around 1200-1300rpm, but after that it's business as usual and drives well.
There's another thread about excessive fuel smell after cam upgrade, and mines no different. I've spoken to the tuner who says it's not running rich, with a target afr of around 14.7 at idle, with +-5% after it's at operating temp.
Don't know if that's correct, and I haven't put my scan tool on it to check if that's the actual afr, but I will.
Given that I run GMM triple stepped headers, 100cel cats and 3" system, I did expect the additional funk, but definitely underestimated it.
I'll have it retuned later on as I do believe it can be better.
The surprising thing that I noticed was that the drone I used to experience at just under 2k has all but gone.
The afm was deactivated in the tune last year when I had the bolt on mods done, but the DOD hardware was still there. Somehow the characteristics of the new valve train/cam have deleted the drone.
For those who are interested in dyno numbers, the car dyno'd at 276rwkw with bolt on mods, and 321rwkw with the cam upgrade.
Now, I didn't drive the car properly until yesterday and still can't say if any of the numbers above are anywhere near actual or accurate.
I can say that this is now a completely different car and certainly feels like it's a heap more than a 45rwkw difference.
Either the initial dyno reading where i had the bolt-ons done was way too optimistic, or this latest dyno under reads. But once it grips, it pulls so bloody hard.
The downside is that the car is now WAY under tyred.
Went for a short drive to just to see how it drove. I kept it under 2800 rpm as it was raining heavily and didn't want it to catch me out unexpectedly.
With this cam, the car rocks. Literally. At idle in park, and more so in drive when stopped. A bit too much for me to be perfectly honest, but can probably be tuned out.
When driving, a little flat spot around 1200-1300rpm, but after that it's business as usual and drives well.
There's another thread about excessive fuel smell after cam upgrade, and mines no different. I've spoken to the tuner who says it's not running rich, with a target afr of around 14.7 at idle, with +-5% after it's at operating temp.
Don't know if that's correct, and I haven't put my scan tool on it to check if that's the actual afr, but I will.
Given that I run GMM triple stepped headers, 100cel cats and 3" system, I did expect the additional funk, but definitely underestimated it.
I'll have it retuned later on as I do believe it can be better.
The surprising thing that I noticed was that the drone I used to experience at just under 2k has all but gone.
The afm was deactivated in the tune last year when I had the bolt on mods done, but the DOD hardware was still there. Somehow the characteristics of the new valve train/cam have deleted the drone.
For those who are interested in dyno numbers, the car dyno'd at 276rwkw with bolt on mods, and 321rwkw with the cam upgrade.
Now, I didn't drive the car properly until yesterday and still can't say if any of the numbers above are anywhere near actual or accurate.
I can say that this is now a completely different car and certainly feels like it's a heap more than a 45rwkw difference.
Either the initial dyno reading where i had the bolt-ons done was way too optimistic, or this latest dyno under reads. But once it grips, it pulls so bloody hard.
The downside is that the car is now WAY under tyred.