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tuning lambda in neutral?

Posted: Thu Jul 31, 2025 2:42 pm
by Honda_TypeS_10
Is it okay to check lambda values to adjust accordingly when my car is in my garage in neutral and revving to the specified RPMs or is this a BAD idea?

Re: tuning lambda in neutral?

Posted: Thu Jul 31, 2025 4:01 pm
by Spunkster
That is not a good way of testing. It should be done while driving under laod or on the dyno.

Re: tuning lambda in neutral?

Posted: Thu Jul 31, 2025 6:17 pm
by Honda_TypeS_10
That is not a good way of testing. It should be done while driving under laod or on the dyno.
Hi Spunkster,
Thanks for the fast response.

I have a 2010 Civic Si running a MAP tune. For dialing in fuel LOW and fuel HIGH, can I start off by disabling VTEC for the fuel LOW and drive around the block to change the lambdas? Is that the correct way?

Thanks again.

Re: tuning lambda in neutral?

Posted: Fri Aug 01, 2025 9:05 am
by Spunkster
Yes, you can do that.

Re: tuning lambda in neutral?

Posted: Fri Aug 01, 2025 9:56 am
by Honda_TypeS_10
Yes, you can do that.
Thank you, I will do that!