mrfred

iTrader: (50)

Its got quite a bit more advance than my most recent timing map. My car doesn't seem to show the same gains with timing as other Evo 9s, but your map looks more aggressive than even GST Motorsports typical Evo 9 stock turbo map.

poyz

Thanks for the feedback.

It's only running 25 psi and tapers back to 20psi.

I've tried running more boost but I'm thinking there is a restriction. Perhaps the exhaust or the stock airbox.

mrfred

iTrader: (50)

Even in the cells that correspond roughly to those boost levels, the timing is still pretty high. Even if there is no knock, you could well be pounding the main bearings and wrist pin bushings. How did you pick these timing values?

poyz

Now here's the weird thing, if I try to take timing away I see knock.

It was tuned by a local tuner about a year ago, I've just migrated to V7 and smoothed/interpolated out the map.

buchnerj

iTrader: (19)

Mine. Mods in sig.

Chris Moore

I can't believe that is not past MBT in at least some areas. E85 is the reason you got that much timing without knock. You need to know how to tune it before jumping into it. Not trying to be a jerk, just saying. That is crazy timing for that turbo and boost level.

I agree with Aaron too, but the way you posted a log showing how there is no knock with that much timing makes me think you really don't understand what MBT is.

mrfred

iTrader: (50)

That's strange. Not much more to say except that hopefully the person who tuned your car is aware that E85 requires a different tuning strategy than gasoline.

lan_evo_mr9

iTrader: (10)

You're not going over 300 load with that setup? It also seems a little rich for E85, unless that's your pump fuel map.

lan_evo_mr9

iTrader: (10)

I had posted a V7 map earlier in this thread and was asked if it had any knock, to which I responded no. Well, I was wrong...I'm not sure if it's the winter blend or just too aggressive (probably both). So I turned it down a notch for safety, not a whole lot, but just enough so I don't get those few counts of knock. I was only seeing 2-3 randomly, but it was enough for me to do something about it. That SES light flashing is pretty annoying . Thank you Tephra

ValdezeEvo

So I'm converting to E85 this week and I was playing around with my fuel maps. Without logging I understand its hard to determine what needs to be changed but I leaned it out a bit and was wondering if it was good as a starting point. Or should I wait till I am actually logging E85 and then make the changes. Let me know what you guys think, thanks.



Mods:
Fuel Pump
head studs
ported exhaust mani
Cone filter
3" tbe w/ test pipe
LICP
ebay IC
Metal DV

mrfred

iTrader: (50)

E85 is very forgiving in terms of AFR, but I still wouldn't go WOT without tuning AFR. With that said, my personal observations on my Evo are that for AFRs richer than about 11.5:1, I tend to observe mild knock across the entire rpm range (peak of 3-4 knock counts at mid rpms), and at AFRs leaner than about 13.0:1, I would get breakup on spool and at high load on the stock ignition.

kaymin

iTrader: (11)

What AFRs is everyone running at WOT?

E85evo8

iTrader: (21)

right around 12:1, but always lower if anything and never really any higher WOT

speifer

Noob question: when finding MBT, how much will HP increase with each degree of timing added once your at or near MBT?

For instance, if you gain 15 hp with 1 degree added, then you only gain 5 hp by adding one more degree, are you at MBT?

leecavturbo

not bad logic imo. although mtbt is termed by torque, measuring torque will have more resolution than hp. you really need a dyno to measure right upto mtbt but for *** tuning your idea of dimishing gains seems like a good indicator to me.