D
dave84gn
Guest
Got a turbolink the other day (great tool!), hooked it up to my car and the computer is detecting quite a bit of knocking whenever I open up the throttle. It retards the timing about 10 degrees, even as much as 18!
Here's a sample bit of data.
(Frm) O2V MAF BLM IAC RPM RTD
4 699 32 133 95 1625 0
5 851 60 133 69 2350 0
6 878 138 133 69 3150 10.4
7 843 158 133 69 4000 10.4
8 824 161 133 69 4825 7.3
9 816 149 133 69 3325 5.4
10 820 157 133 69 3650 4.2
11 808 159 133 69 3925 3.1
12 804 159 133 69 4225 1.6
13 812 128 133 100 3200 0.5
14 820 75 133 100 2625 0
Looks like I went through two gears... and it *seemed* to have only knocked at one point (3150rpm) and went down from there.
Also, in ALDL mode each time I open up the throttle, ESC counts jump by about 4 knocks.
I hold about 10 psi of boost at WOT (cracked headers are hindering my boost). I don't think I hear any knocking/pinging sounds while I'm driving (but I ain't an expert). My car runs around 16.5@86 on the GTech. Owned this car for 2months so far. 104miles on the car. I run premium fuel at 92 octane on the stock chip.
Fairly stock car:
-removed cat
-dual dynomax super turbos
-k&n cone filter (removed air box)
-160 stat
-adj. FPR (set at 41psi static)
-new valve springs
My car generally runs fine. At idle, it sounds healthy, no noises to speak of, except a *little* bit of chatter. The car drives fine, it's even fairly responsive. Just seems to give me little power at WOT because of this knock retard.
I hope I'm sort of on my way to getting the power of my car into something acceptable. So what the heck could be causing so much knock? Is it possible my knock sensor is shot? Detecting false knock? Other mechanical problem? Timing related?
Thx for reading this!
Dave
Note: I'm fairly new to this car, so any suggestions/ideas that anyone has would be greatly appreciated.
Here's a sample bit of data.
(Frm) O2V MAF BLM IAC RPM RTD
4 699 32 133 95 1625 0
5 851 60 133 69 2350 0
6 878 138 133 69 3150 10.4
7 843 158 133 69 4000 10.4
8 824 161 133 69 4825 7.3
9 816 149 133 69 3325 5.4
10 820 157 133 69 3650 4.2
11 808 159 133 69 3925 3.1
12 804 159 133 69 4225 1.6
13 812 128 133 100 3200 0.5
14 820 75 133 100 2625 0
Looks like I went through two gears... and it *seemed* to have only knocked at one point (3150rpm) and went down from there.
Also, in ALDL mode each time I open up the throttle, ESC counts jump by about 4 knocks.
I hold about 10 psi of boost at WOT (cracked headers are hindering my boost). I don't think I hear any knocking/pinging sounds while I'm driving (but I ain't an expert). My car runs around 16.5@86 on the GTech. Owned this car for 2months so far. 104miles on the car. I run premium fuel at 92 octane on the stock chip.
Fairly stock car:
-removed cat
-dual dynomax super turbos
-k&n cone filter (removed air box)
-160 stat
-adj. FPR (set at 41psi static)
-new valve springs
My car generally runs fine. At idle, it sounds healthy, no noises to speak of, except a *little* bit of chatter. The car drives fine, it's even fairly responsive. Just seems to give me little power at WOT because of this knock retard.
I hope I'm sort of on my way to getting the power of my car into something acceptable. So what the heck could be causing so much knock? Is it possible my knock sensor is shot? Detecting false knock? Other mechanical problem? Timing related?
Thx for reading this!
Dave
Note: I'm fairly new to this car, so any suggestions/ideas that anyone has would be greatly appreciated.