Stock 2008 Corvette Flex Fuel Conversion

[sevinn]

Sevinn- what volume did you come up with for the fuel rail if you don't mind me asking? That'd be about the volume I'm working with.

I don't recall exactly sorry, but I just calculated the volume of a cylinder that is 3/8" x whatever the length of all parts of the fuel rail are combined.

[iced98lx]

If you're missing anything like that in V3 email support

Just an FYI For anyone following along I did submit this to Support about a week ago, got a ticket number back but no response. Not sure if I should expect one or not but hopefully they'll add them.

[sevinn]

Just an FYI For anyone following along I did submit this to Support about a week ago, got a ticket number back but no response. Not sure if I should expect one or not but hopefully they'll add them.

I did the same, but they asked to to read the car with 2.24 which I haven't done yet.

[iced98lx]

Okay so sensor in and I *think* wired properly. Getting that pin to sit properly was.. uh, fun. I added Fuel Composition Sensor to the scanner and it's reading 50hz (no ethanol) which is correct AFAIK but just to ease my mind that won't read 50hz unless it's getting a signal right?

Attached is the tune I'm running and the scan showing 50hz.

I'm off to find some e85 for my jerry can to dump in and see if it goes up

[schpenxel]

It will only read 50hz if it's getting a signal (or at least that's how it has worked on mine)

Dump some E85 in and see what happens

[iced98lx]

Excellent. I see why people mis-seat/have issues getting the pin in there. Just grabbed 5 gallons of e85 and am off to toss a couple in and see what it says!

[iced98lx]

Well, I guess I'm good!

[schpenxel]

Woohoo

[iced98lx]

Now to clean up my wiring get it all together and go fill up with e85 and get going on the headers and catback.

[iced98lx]

So I went for a drive yesterday and am noticing some KR in some places. I can easily force KR jumping into the throttle from cruise. The Flex Fuel Advance (logged in this scan) is very low or negative for these events so I don't assume I've made a mistake in that table as of yet. Is this worriesome? See 17:29ish of attached cruise for example. This drive was post 15-20 minute cruise for gen 4 wonkiness to settle down.

[schpenxel]

Log "knock retard" instead of total knock retard (or both). Total includes all kinds of stuff like burst knock retard... Straight knock retard just reports retard from knock only

[iced98lx]

Log "knock retard" instead of total knock retard (or both). Total includes all kinds of stuff like burst knock retard... Straight knock retard just reports retard from knock only

Ah, nice I will change that and do some logging. Thank you yet again for the guidance.