churchja

iTrader: (17)

Jim,

No bashing... but, I've been following your E-85 threads for quite a while. I first started running E85 just a couple months after you. If memory serves correctly, you had your original E85 tune done here in the LA area, correct?

Thanks,

Jay

Sent you a PM.

Jim in Tucson

iTrader: (3)

PM returned.

Boosted Tuning

iTrader: (12)

First off, no offense, but that fuel map is horribly "block" tuned. You should get some more transition in there.

Next, Lean spool on/off does matter, least IMHO. With lean spool OFF, AFR are more consistent pull to pull and gear to gear.

VETTE_50_TH

iTrader: (5)

This may sound stupid and forgive me if it does, but the way we scale the 2g eclipses with ecuflash is by running full time open loop. Why dont you jsut do that and then you dont have to play around with fuel trims.

tscompusa2

iTrader: (22)

gives perfect a/f and has the evo 8 spooled by 3300 and peak tq by 3900 .. a/f is laser solid ..... maps fine. doesnt matter if you block a fuel map, you do whatever gives more control over the a/f and blocking does just that. ALL major big well known tuners block.

tscompusa2

iTrader: (22)

you still have to confirm the deadtimes within reason for the injectors for the car so you cant really dial that in if youre stuck in open loop.

Boosted Tuning

iTrader: (12)

Not all major tuners block tune. You can keep thinking that if you want.

tscompusa2

iTrader: (22)

80% do. I can make a smooth fuel map also it makes no difference with the car. I can name 3 right now that would shut you up. But im not gonna bother.

Boosted Tuning

iTrader: (12)

The same "10.8" shouldnt at 160load and 5000rpm then at 340load and 5000rpm.

Im not just talking about WOT tuning. Im talkin about part throttle and transition tuning, which that map is lackin very much.

I can also name BIG tuners that DONT block tune the hell out of the fuel map if "that would shut you up. But Im not gonna bother."

tscompusa2

iTrader: (22)

this map was shown only to display WOT control, i did not tune his fuel map for cruise or part throttle... so ya it could use some work in those areas. i was only referring to WOT tho. which were approx 230-250 for that guy.

VETTE_50_TH

iTrader: (5)

If the supplier, for instance, DeatschWerks, which i have the 1600's injectors, gives you a latency sheet from 6-18V, why would i have to change the deadtimes? Wouldnt i just have to change the overall size of the injector?

tscompusa2

iTrader: (22)

yes , sometimes your latencies will vary tho even to manufacturer settings.

VETTE_50_TH

iTrader: (5)

Hmm. The reason why im concerned is i dont wanna F with latencies in closed loop. Open loop tuning seems so much easier. Having the ecu just read to your high octane map instead of messing with fuel trims seems the easier way. Not only that, you can just log the wideband ans lean or richen the injectors to get the afrs correct.

Jim in Tucson

iTrader: (3)

And, the correct answer was...boost leak. After new throttle body seals and new injector seals, I'm now hitting peak 1byte load at 3,500 rpm.

However, my peak load is 350. This seems high to me.

What should my peak load be with an IX turbo at 28spi on a mildly tuned VIII running E85 at 2,400 feet elevation?

tscompusa2

iTrader: (22)

I don't know at that elevation whats normal and whats not, but i wouldn't worry about it. sounds like its spooling how it should now. Evo 9 turbo isn't exactly that little, keep that in mind.