Detonation at 2000rpm only
So, in the last week I altered the tune on my SR20VE N15 (20V bottom end, 16VE head, 11:1 comp). Gave it a bit more down low and a bit more up top. Feels really good now and not as gutless.
Anyhoo, I only increased my 1600-2000rpm timing from 10 degrees to 12. Which is bugger all. In any case I added a little more fuel to compensate.
Now, the issue is that it will ping at exactly 2000 rpm and literally nowhere else. And it will do it with minimal load, just any increase in gradient will do it. It's also regardless of ambient air temperature, at night, early morning, midday sun, whatever. It will do it.
And then it won't. If I pull up at lights and turn the car off and then back on again, pinging is impossible to induce let alone notice. Ringing it at 1800-2400rpm, nothing. No ping. Turn the car off at destination and come home and it's back! But still, only at 2k. If I downshift and get it above 2.5k it's no worries.
What do you think people? I'm thinking that my ecu may be getting a wee bit dodgy, I'm not sure what else it could be-surely can't be a fuel pump thing as it's rpm specific right?
For now I have turned the timing back to 11 degrees just incase that was the cause, but it just seems so odd to be able to be fixed by restarting the car.
Let me know what you think in any case guys, I look forward to your responses
Cheers, Dan.
Anyhoo, I only increased my 1600-2000rpm timing from 10 degrees to 12. Which is bugger all. In any case I added a little more fuel to compensate.
Now, the issue is that it will ping at exactly 2000 rpm and literally nowhere else. And it will do it with minimal load, just any increase in gradient will do it. It's also regardless of ambient air temperature, at night, early morning, midday sun, whatever. It will do it.
And then it won't. If I pull up at lights and turn the car off and then back on again, pinging is impossible to induce let alone notice. Ringing it at 1800-2400rpm, nothing. No ping. Turn the car off at destination and come home and it's back! But still, only at 2k. If I downshift and get it above 2.5k it's no worries.
What do you think people? I'm thinking that my ecu may be getting a wee bit dodgy, I'm not sure what else it could be-surely can't be a fuel pump thing as it's rpm specific right?
For now I have turned the timing back to 11 degrees just incase that was the cause, but it just seems so odd to be able to be fixed by restarting the car.
Let me know what you think in any case guys, I look forward to your responses
Cheers, Dan.