Timing required for horribly shitty engines and octanes is indistinguishable from timing required for super high flowing engines at low boost levels (don't confuse boost levels with flow). The SR20s you're used to have highly inferior flowing intake manifolds, heads, smaller valves, and lesser cams than mine. I'm talking about timing required to make best torque. Not timing needed to keep detonation at bay.Fred wrote:With all due respect, Ben, (quite a lot) if you need TDC or ATDC timing in a normal load region, your setup SUCKS
Off topic a bit though, so I'll stop.
We'll just leave it at that then. We need ATDC timing. Give it to us. =PFred wrote:The main area for TDC or ATDC timing is at VERY low revs and very high loads, 100kpa at 300rpm requires some retarded timing.
Makes sense. I was going to suggest 0.33333333333333 increments but I know that's not happening.Fred wrote:Re 0.3 or 0.4 or other increments, sure, this is an OK idea, but it will result in the inability to choose exact degree timing figures at various levels. I'd prefer something that divided into 1 cleanly inside our precision level.
I couldn't tell yah. Possibly not on my engine. Possibly so on others?Fred wrote:Right now I'm leaning towards 10 - 53.75, but I'd be just as happy with 8.75 to 55, really. I've got to ask, though, would the difference between 53.75 and 55 be measurable?
Either way, I still maintain that a 63.75 degree spread is just not quite enough. I'd hate to run into that sort of barrier, shitty human tuner or no.
Here's my current timing map:Fred wrote:How many kpa is that at? How can your octane level support that, and NOT support reasonable in boost timing???...
http://i4.photobucket.com/albums/y113/b ... 1297429629
Keep in mind I'm getting ready to remove much more timing in the boost section and that the 160 kPa row is the last properly tuned row. I'd imagine if I tuned the 220 kPa section properly I'd be into the negative numbers or close to it.
Past 8k rpm is also not tuned. I'm also waiting for EGT data to go more advanced during cruising. I do have 52 or 56 at the most right now though. And like you said, things get real retarded real quick at high pressure and low rpm.
(Notice how not being able to use whole numbers doesn't really phase me any. )