R-00123
Senior Member
- First Name
- Dallas
- Joined
- Feb 17, 2018
- Threads
- 7
- Messages
- 54
- Reaction score
- 17
- Location
- Arizona
- Vehicle(s)
- 2017 type r fk8
- Thread starter
- #1
Hello all, I'm not finding much discussion anywhere about spark knock with our fk8's.
Let me clarify, its spark knock so noticeable that you can hear it (described as marbles in a tin can) as well as feel the engine struggling to make smooth power and it doesn't seem like the ECU is doing anything to mitigate it when it happens. (91 octane always, 93 when I can find it)
No CeL's either. And it always appears that it wont stop happening unless you get your foot out of the throttle.
When I first noticed it I looked into why it happened and determined it was my causing.
(3rd gear, ~20mph, slight incline, and at least 75% throttle. Also a/c on which may or may not contribute to the problem.)
Since then I learned the small turbo engine rule of no WOT unless the rpms are 3k or higher.
Wellllll, this car still does it randomly. Only when it has some type of load, but not nearly as bad as the first time.
Example; 2nd gear, 30mph, quick to 75% throttle and eased into 100%, with knock happening shortly before reaching 100% throttle. (Rpms were well over 3k, probably closer to 4k)
I do live in the desert of tucson, az. But the heat doesn't seem to be a factor. When ever it happens it can be 110°F or 55°F like the weather we are starting to have at night now.
I know spark knock is not as bad as pre-ignition, but should these cars even be having this problem? Or is it just me? Is this commonsense and I'm just too spirited with my spirited driving?
Also I'm at 8,500miles. First time it happened was I believe around 2,000 miles.
When it first happened no mods what so ever, and now current performance related mods are a mishimoto intake, and remus exhaust.
Let me clarify, its spark knock so noticeable that you can hear it (described as marbles in a tin can) as well as feel the engine struggling to make smooth power and it doesn't seem like the ECU is doing anything to mitigate it when it happens. (91 octane always, 93 when I can find it)
No CeL's either. And it always appears that it wont stop happening unless you get your foot out of the throttle.
When I first noticed it I looked into why it happened and determined it was my causing.
(3rd gear, ~20mph, slight incline, and at least 75% throttle. Also a/c on which may or may not contribute to the problem.)
Since then I learned the small turbo engine rule of no WOT unless the rpms are 3k or higher.
Wellllll, this car still does it randomly. Only when it has some type of load, but not nearly as bad as the first time.
Example; 2nd gear, 30mph, quick to 75% throttle and eased into 100%, with knock happening shortly before reaching 100% throttle. (Rpms were well over 3k, probably closer to 4k)
I do live in the desert of tucson, az. But the heat doesn't seem to be a factor. When ever it happens it can be 110°F or 55°F like the weather we are starting to have at night now.
I know spark knock is not as bad as pre-ignition, but should these cars even be having this problem? Or is it just me? Is this commonsense and I'm just too spirited with my spirited driving?
Also I'm at 8,500miles. First time it happened was I believe around 2,000 miles.
When it first happened no mods what so ever, and now current performance related mods are a mishimoto intake, and remus exhaust.
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