Keep nipping the #7 plug.....
I currently run more timing than you are, more boost than you are and have never nipped a plug in the time I've had the car running which is nearing 20 passes now. We've tuned a lot of cars that run the same fuel on more boost and timing with no issue.
We currently have a car we built and tune that is running in the 5.20's on C16 that has 250+ IAT's with 28psi of boost and it has more timing in the tune than yours. Albeit the AFR on my car and that car is richer than yours. We run -10 heat range non projected tip NGK plugs in both cars.
I would ditch the methanol injection if you're running C16. No need for it now.
What heat range plug?
We currently have a car we built and tune that is running in the 5.20's on C16 that has 250+ IAT's with 28psi of boost and it has more timing in the tune than yours. Albeit the AFR on my car and that car is richer than yours. We run -10 heat range non projected tip NGK plugs in both cars.
I would ditch the methanol injection if you're running C16. No need for it now.
What heat range plug?
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From: New Orleans, Booziana
I currently run more timing than you are, more boost than you are and have never nipped a plug in the time I've had the car running which is nearing 20 passes now. We've tuned a lot of cars that run the same fuel on more boost and timing with no issue.
We currently have a car we built and tune that is running in the 5.20's on C16 that has 250+ IAT's with 28psi of boost and it has more timing in the tune than yours. Albeit the AFR on my car and that car is richer than yours. We run -10 heat range non projected tip NGK plugs in both cars.
I would ditch the methanol injection if you're running C16. No need for it now.
What heat range plug?
We currently have a car we built and tune that is running in the 5.20's on C16 that has 250+ IAT's with 28psi of boost and it has more timing in the tune than yours. Albeit the AFR on my car and that car is richer than yours. We run -10 heat range non projected tip NGK plugs in both cars.
I would ditch the methanol injection if you're running C16. No need for it now.
What heat range plug?
I am still running Br7EF plugs because micro does not like non-resistor plugs.
Mike
I think that plug is too hot as well, but some run them with success.
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From: New Orleans, Booziana
Both much better than what I have. I may try the 8 heat range plugs again, last time I did things did not go well. Maybe just that hole for safety.
I feel low 12's is slightly lean with the meth injection. We just sent a set of injectors off that had 4 seasons on them and here was a 40% variance between injectors. I feel it has to do with your intake also. How much do you slow down pulling a degree or 2? Did this just start with the cooler temps or did anything else change?
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