I've noticed that my car with a CAI and Bama tune and then subsequently with a D1SC ProCharger build up both seemed to want to take less timing than most GT's. I don't EVER hear any audible knock, and believe me I listen. I keep thinking it's got to be one of 3 things:
1. An engine/vibration issue.
2. A sensor issue.
3. A fuel issue.
Lund is tuning my car now, and also noted it's not taking but 14-15 degrees towards the top whereas most 15's he's tuned with similar builds can take 17-18 without issue. I put it on the dyno today and logged my first pull and sent the log to Jon to look through, and I'm curious to see what he thinks. The HP / torque numbers aren't where I was hoping, but I think it's directly related to 1, 2, or 3 above. Lund is apparently the wizard of Ford Tuning, so I'm doing everything he says when he says to do it and I trust his word and work.
I buy my gas at QuickTrip (QT) - 93 octane. There's parts in my curve down low and towards the middle where it's taking 18-20 degrees, but up high it can get as low as 14, which is just a huge power robber. I'm just trying to think through what could be a cause of "false knock" to eliminate. I'm wishing I had my stock exhaust to bolt back up to the car and see, but my car was delivered with the Ford Motorsports exhaust and I can't help but think the raspiness towards middle-high rpm might be tossing enough vibration to F with the knock sensors.
I don't think it's the fuel, and I don't THINK there's anything wrong with the sensors. I took out my Whiteline trans insert thinking it could be causing vibration and no difference. What else can I look at to whittle down my possibles?
What am I missing?
1. An engine/vibration issue.
2. A sensor issue.
3. A fuel issue.
Lund is tuning my car now, and also noted it's not taking but 14-15 degrees towards the top whereas most 15's he's tuned with similar builds can take 17-18 without issue. I put it on the dyno today and logged my first pull and sent the log to Jon to look through, and I'm curious to see what he thinks. The HP / torque numbers aren't where I was hoping, but I think it's directly related to 1, 2, or 3 above. Lund is apparently the wizard of Ford Tuning, so I'm doing everything he says when he says to do it and I trust his word and work.
I buy my gas at QuickTrip (QT) - 93 octane. There's parts in my curve down low and towards the middle where it's taking 18-20 degrees, but up high it can get as low as 14, which is just a huge power robber. I'm just trying to think through what could be a cause of "false knock" to eliminate. I'm wishing I had my stock exhaust to bolt back up to the car and see, but my car was delivered with the Ford Motorsports exhaust and I can't help but think the raspiness towards middle-high rpm might be tossing enough vibration to F with the knock sensors.
I don't think it's the fuel, and I don't THINK there's anything wrong with the sensors. I took out my Whiteline trans insert thinking it could be causing vibration and no difference. What else can I look at to whittle down my possibles?
What am I missing?