Wait a sec, doesn't that Certain Someone have an 8500 rpm redline? What does he do then, just live with the 7000 values up through the higher numbers? Seems odd...

Well I just did the same thing and there is a definite bump in power according to the butt dyno for sure. No pinging at 7.5 psi on 93 octane Valero. Very nice map ,thanks for posting it :bigtu:

my timing map is posted in my dyno thread... it's considerably more nasty that yours sam... you should be able to bump all of your boost values by 4-5* i think.

I'm gonna try pauls table tomorrow, pretty excited about that.

Thought I already asked this, but seems not.
Are there only 12 columns in the ms settings? This seems odd as even a Link has 16?

You say "even" a Link. The Link is a great ECU, but it's just getting a little long in the tooth, and it's only available from FM for the 94-97 cars. If you've got a newer car, it's Hydra if you're buying from them, or maybe Voodoo.

I'll break it down for ya:
Link 16x16 $1700
Hydra Nemesis 32x32 $2000
Megasquirt 12x12 $300

Hmmm.... 12x12 doesn't seem so bad anymore. And to be perfectly honest, with the 3d mapping, it's fairly easy to get a good tune with "only" 12x12 due to the simplicity of our engine and relatively low redline of 7200rpm. The idea is a perfectly flat fuel curve... and the a 12x12 table on the Miata is perfectly capable... same for the spark table.

link is like 5x16 or something......

I've owned 2 links so I pretty much know how it works. My next one is going to be a MS, so I'm not bashing it. I just never knew there were only 12 columns. I simply find it surprising that the ms guys didn't use more columns. Would it really have been that difficult to write code for a couple more columns? Probably, otherwise they would have done it obviously. Still, I find it strange. My redline was 7800 btw, so I did really use all 16 of them ;).

you dont need 16 columns. the MS reads 5 cells at a time, plenty of res.

What are you spark settings to use that table?
something like this.?

The spark settings in that table macanha have nothing to do with your ability to run that table. If you have a similar compression ratio engine and similar fuel then you should be able to run that spark table. Use it cautiously.

how would this apply to someone with a Hydra? From what I have read here, the FM timing table is pretty tame. I should be able to adjust it a bit more. Perhaps I can just use this table and interpolate the numbers between for my use.

I also typed this table up by hand and started running it tonight. The car screams like a bat out of hell with the new table, what a difference. I can't wait to actually get it on a dyno now for some timing tuning. It pulls like a mf'n freight train and i'm not running that much boost, nor is my turbo very big :) Plus my stock suspension squats like woah when going WOT.

Sam your timming drops off the map pretty sudenly add abit more timming on boost transition and smooth out your map as much as possible. Those big ole timming jumps are what you are feeling on your but dyno.

hey andrew, whats your spark table looking like? im curious as i just modeled off teh DIY maps, but i was curious about adding a little more timing on the lower end as the car feels somewhat sluggish at the low end.

I did an experiment today with Pauls map (posted on previous page) and compared it to mine that i'm using in the hydra.

You can see the difference pretty clearly. He runs more timing at high rpm but significantly less off boost. I was somewhat knock limited in boost above 6500 so I pulled some out. But I dont have ANY knock anywhere with the current map. East coast 93 gas.

Sumbitch... well, looks like Icantdo55 and I need to call Kienan back and tell him we need to come down and do 3pulls each again. I want to do a pull with the current spark table now that I've got my COPs in to see if there's any difference. And I'll do a couple pulls with Pauls/MikeRiv/5otherguys/andEverybodyElseButMe's spark table and see what I get.

Sam, you want my map numbers? should improve drivability and give you better power delivery in the midrange.

sam i modded my map based on pauls....

http://www.boostedmiata.com/timing/majortiming.jpg

the main difference really just being more timing in the transition between boost and vacuum and more advanced in low boost.

This still lands me at 14-15° timing at 12-15psi, where i was previously. what you really need to do is find a shop that has a loaded dyno and has experience tuning spark.

as requested by tom:

http://www.y8spec.com/nemesis/y8sspark.gif

Sorry the axes are different than you guys use but I'll let someone else fix that when they port it over.