b4cz2896

I think 13 degrees is pushing it for straight pump and 20 psi on 10:1 compression. I run 12 degrees on pump/meth (10:1 compression) 17ish pounds. I've leaned it out a few times but I think the low timing keeps it together.

SLOW SEDAN

iTrader: (13)

Even on E85 I'm at 13 degrees @ 20-21lbs w/ 11.2 A/F. I know that's conservative by many peoples standards but I can hot lap the crap out of it and it doesn't show any signs of giving up smoke. It picked up a good bit going from 10 to 13 degrees, plugs looked good so I left it there.

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iTrader: (1)

Sucks, but I liked the background music. Colorado should be called "Maryjane."

Forcefed86

iTrader: (4)

Doh! Get that water/meth back on there to help cool the tops of those pistons!

Tjabo

You're the friggen' man, Matt!! Glad this build is making you smile!

I lost a motor one time on MS3 when I didn't have my AFR safety parameters set aggressively enough. Taught me a lesson about that. Lol

69-chvl

iTrader: (11)

I think a AFR cut-off would be nice but I think AFR might move around too much even normally. On gear changes my AFR momentarily lean spikes. Its just for split-second, so if you can have it ignore it for a defined period of time it could be worthwhile.

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iTrader: (1)

I think some ECUs will let you set parameters such as if you have a xx.x AFR for over x seconds above xxxKpa it'll activate the safety.

69-chvl

iTrader: (11)

Which begs the question...how long a timeframe do you allow??

coltboostin

Props to not being afraid to share your failures!

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iTrader: (1)

Right before it does damage! Lol. Not sure, probably look at datalogs of lean spikes like you've mentioned. That time frame is obviously ok. Go a little longer than that. Maybe a second or so. Seems like it'd be safe that way. Just me thinking out loud. I could be way off.

Tjabo

With the MS3 you have COMPLETE control of all of the parameters related to the AFR safety, so you can be as safe as you want. Usually I only had mine set to any sort of aggressive safety measures in boost, and it ramped up with the boost level.

The behavior after the AFR safety cuts in is what I didn't have set aggressively enough one time when I lost a motor. I needed to have it cut until I let off the throttle to 20% and came down to 2,000RPM or something, and I didn't... So I stayed in the throttle while it went POP POP POP on the AFR safety, and then BANG! Lol I can't really explain what was going on in my head when I did that.

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iTrader: (1)

The emojis are great! Lol.

denmah

iTrader: (2)

scored these today from a friend

denmah

iTrader: (2)

haha thanks, its part of the game sometimes, and it happens on the big scale too even if they dont show you

yenkomike

iTrader: (2)

hell I started spraying meth on mine at 10# boost and 12* timing and haven't really turned it up yet with my stock 10 bolt . just in case I get a bad tank of 93 but I'm sure it is fine and once I get the axle finished maybe I wont be such a candy ***. lol.

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iTrader: (1)

lmao!!!

98Camarod

iTrader: (43)

No one makes those mistakes in the real world lol

Blown06

iTrader: (32)

I'm gonna second that. There are some pretty crazy things being done on stock **** and the only time you hear about it is when it is good. I can promise you there are a lot of the "SBE"'s in the junk yard who's history will never be made public.

Keep it up

dean85gt

iTrader: (7)

What would your timing curve look like from 15-20psi? Ive got the same setup up and on 94 with meth Im at only 10 degrees at 19psi and a bit nervous to keep increasing it (made 672rwhp and 735rwtq) Still figuring it out

jaywill

iTrader: (5)

great info..