poormxdad

Gents,

If I'm running less than 10 pounds of boost, what is the maximum load needed on the VE and AFR Tables? Mine go to 240 now, but my limited knowledge indicates ~200 might give me plenty of interpolation room and would allow more rows in the lower load areas.

Thanks,

18psi

iTrader: (76)

You always want to have at least 1 or 2 rows more than what you run. Just in case.
Also the extra load resolution isn't really going to improve things much, so don't limit yourself too much.
For me the most important breakpoints are the rpm breakpoints. Esp between 2500-3500 and 4500-5500 where the car spends much of it's time , needs more resolution there as ve tends' to vary pretty significantly on NB's

poormxdad

Sir,

Not quite the answer I was looking for.

Am I correct that at 10 pounds of boost, I'll only be looking at a max load of ~175? Do I need the 240 row if I'm only expecting the max load to be about 175 kpa, and I have a 180, 200 and 220 row?

Thanks,

acedeuce802

iTrader: (1)

You do not need that many rows past 175. I would do 175 and 200 as your last 2 rows. If you have any inclination that you'll want to raise the boost in the future, than leave it at 240. You're not really being hurt by having that many load rows in there.

18psi

iTrader: (76)

The answer is right there, you're just not comprehending it, lol.
Yes, 10psi = 70kpa + 100kpa ambient so at 10psi you'd be roughly in that area.

You don't need the 240 row, but you want at least 1 or 2 rows above what you'll be running, so that if you were to exceed your boost on a cold day or at high load, you wouldn't lean out if boost cut for some reason wouldn't kick in. 170, 190, 210 would work, or just 170 and 190.

Hope that makes sense.

poormxdad

I get that a lot.

The rest is the answer I was looking for.

Thanks much,

Braineack

iTrader: (62)

i ran 15psi, i had like 3 boosted rows in my ve/spark maps.

18psi

iTrader: (76)

I'd gladly trade a couple rows for a couple columns

poormxdad

I'm still a noob. If I have a 100, 120, 140, 165, 190 and 240 is that enough?

What would the difference be if I had TunerStudio interpolate that 240 row down to 220? Or up to 260?

Braineack

iTrader: (62)

that may have been back when i ran ms1 back in 2006...when the tables were really small.

this was the last fuel map i ran. my boost level was 205kPa.

Savington

iTrader: (31)

IMO you want two rows above your target boost level. One ~10kpa above which is set to be a little richer/less advanced than you might expect to be ideal at that boost level. One 20kpa above which is substantially richer and much less advanced than you would expect to need. Overboost should be ~25kpa above target boost level, unless your motor is stock and you're on the bleeding edge, in which case 10-15kpa is more prudent.

I run ~230kpa in Acamas, top row is 250kpa, overboost is 255kpa.

Braineack

iTrader: (62)

the above is probably the most ideal practice.

18psi

iTrader: (76)

We tend to have the same approach on these things