Rafa

iTrader: (22)

No ****! Well done!

Mine are also 550cc. I guess I have a lot of work ahead of me!

samnavy

iTrader: (7)

This reminds me that I've got to do some "cruise" tuning. I think I'm sitting pretty rich at around 15:1 in cruise most of the time. That being said, I just filled up last night and got 26mpg... including A LOT OF TIME WITH THE EBC ON! I think I can manage a few more mpg's with some laptop time. There's definitely 30+mpg in it somewhere. If I could keep my finger off the EBC switch, I'm sure 28mpg would be the norm.

Ben

iTrader: (33)

You'd probably be better off with smaller injectors. But what's done is done. Tune it leaner.

I still don't understand why you guys like to cruise around at stoich? Lean that bitch up. Just leave it fat for when you stand on the loud pedal. I get fantastic economy, and very few of you ******* make more power than me*

*built motors need not apply

FHS

iTrader: (2)

I've leaned out my AFM out to 15.1 idle and cruise. Normal mixed driving (highway/surface/sprited) I get a tad over 24 mpg. I've never driven an entire tank on surface streets and I don't plan on doing that. On the highway, I've gotten as high as 32 mpg driving conservatively.

Currently, I'm driving extremely conservatively to see just how high my mpg can go with mixed driving.

johndoe

iTrader: (5)

Anyone monitoring their egt while leaning their cruise?

Ben

iTrader: (33)

Yes I have a pyrometer on my a pillar

FHS

iTrader: (2)

Yes, temp is up slightly.

Ben

iTrader: (33)

add a little bit of timing

AbeFM

iTrader: (3)

I've been getting 17 for as long as I can remember. I thought it was cold start settings since most of my driving is 7 miles to work on back roads, and 7 back. With the miata club, I get 30-32.

I used to cruise very lean, but it didn't really help, richening it up got me better response, so I try to stay in the 15-15.5 range. I keep wanting to tune it for economy, but haven't yet. I need to have something that spits out fuel usage per revolution as a loggable variable into the MS code, then I could get economy out of it pretty easy.

Mach929

iTrader: (3)

are you being serious with 19.2:1?

also you guys getting really good mileage show me your afr target tables and spark tables please

AbeFM

iTrader: (3)

Yeah - I was running 18-20 AFR's for a while. But you're less effecient since you need more throttle to get the same power. Or, you can be. Lean burn is fine, but overdo it and you should hurt your mileage. Also, spending at least 5 minutes a day out of boost helps. So I hear, I wouldn't be knowing.

magnamx-5

iTrader: (7)

on ms i run bout 16-1 and have a decently agrressive overrun in cruise that puts me to 20-1 or so.

Ben

iTrader: (33)

Yeah

Abe--it's more complicated than that. Wider throttle angles mean lower pumping losses. And remember it doesn't take much power to maintain cruise. So super lean cruise is great as long as you have your accel enrich set to keep you fat when you accelerate.

Proof is in the pudding. My car is fast, responsive, and gets wonderful economy.

AbeFM

iTrader: (3)

Ok, I will give you that. I messed with lean cruise before I got even close on my accel enrich settings. I will revisit this.

Got a good source for EGT probes? I got one I thought would be good, it lasted like 3 months.

hackerchris

iTrader: (13)

Look it up, the CA version has completely different exhaust system so they can be overly cautious with their emissions.

AbeFM

iTrader: (3)

The cali versions are only different in a few years. And it's not just cali. NY also gets the same cars, and I think one maybe two other states. DEfinately in 99-00. I think in '01 everyone gets the same again.

My car is from TX. Still smells of queer.

Jesse H

iTrader: (1)

-wrong forum-

naarleven

iTrader: (2)

I could argue against that considering that they're discussing how to tune cruise for best effenciency.

Ben

iTrader: (33)

WTF are you?

<--- Yeah that's right SUPER mod bitch

I say let them play through

akaryrye

iTrader: (5)

Ben, so how much timing are you running in your cruise map (3k-4kish and 20-60kpa) Ive got mine tuned to 16:1 and roughly 35 - 40* of timing there, still not getting fantastic economy though ... last fillup was 18mpg but with 3.9 gears and unknown speed sensor since the tranny was replaced with a 97 trannie at some point so 5 or 10% more depending on that, and i hardly even boost nowadays because premium is $4.78 here :( **** that.