Quote:
Originally Posted by bur****jp
I haven't seen anything richer than 0.85 lambda, and suspect this to be a dubious claim, as DI engines run quite a bit leaner under load than port injection engines.
Hotter in this context isn't hotter enough to be bad for valves or exhaust components. We're still talking being in MBT AFRs here.
|
Stock GT86:
That's really no richer than 0.85.....
By it's very nature, running leaner is hotter. Whether that is safe or not, your choice. Safe by it's very nature is a personal opinion, you may only want it to be safe for 10k, others for 50k. Just because an AFR is "ideal" for making power does not mean that it's the best and safest AFR. Adding fuel aids in cooling and adds a safety net, I doubt there's many tuners running any form of boost that maintain mid 12s
I certainly wouldn't want to be at 12.5:1 at max RPM consistently, but you would. Who's right.... perhaps neither of us.