Evo X upgrades

[scheides]

Let's see, maf is 36% bigger so drop maf scaling by about that much, injectors are double, so 2x scaling + the new injector latency fix and use the supplied (?) latencies, then put in psi-boost hack w/ zero CF, fire up the car, cross fingers and go baby go!

Just kidding, it's a little more involved than that. I will be very interested to see how the psi-based boost control works out for ya on the street!

[mlomker]

cross fingers and go baby go!

That's so damn easy, why bother with Shane? :D

[scheides]

That's so damn easy, why bother with Shane? :D

Blasphemy! The man is filled with bad, bad ideas to make every car faster/better :)

[Murlo26]

30-32...sigh...lomker you wuss.

Have I taught you nothing..you need at least 34 psi to make the torque of a 4g63, you don't want to look stupid do you :)

Ps. I am excited to see what this setup has in it finally...

After months of waiting we will know if the BBX has motor breaking potential in it :)

[asshanson]

What do you mean by PSI based boost control? That doesn't make sense to me as PSI = boost. Do you mean RPM boost control? Sorry I'm a newb I guess.

[mlomker]

Do you mean RPM boost control?

I'm not an ECU geek, that's just what Tephra calls it. By default the X uses load targets and you can't actually tell it to hit a particular psi target. Every dyno you run the car on will hit a different peak boost because it loads the car differently.

The best analogy I've heard is that it will behave like an ECU-adjusted MBC afterward.

http://www.evoxforums.com/forums/showthread.php?p=522893#post522893

[scheides]

^Once properly setup that's the idea! Load-based systems work, but they are error prone and thus inconsistent. The biggest saving grace on the X is that it has a low gear range and high gear range have separate base wasgtegate duty cycle (WGDC) tables, which in helps a LOT in the real world.

[asshanson]

Gotcha, now it makes more sense.

[Shane@DBPerformance]

Let's see, maf is 36% bigger so drop maf scaling by about that much English major? I don't know where you got 36% from.

injectors are double, so 2x scaling + the new injector latency fix and use the supplied (?) latencies 1000cc * 2 != 2200cc. And nothing works right with the huge injectors as far as just doing simple scaling for the size.

then put in psi-boost hack w/ zero CF Done. PSI base still isn't perfect since it's based on absolute pressure instead of gauge pressure, which most people talk about and absolute will change from day to day based on the barometric pressure, but that's fairly minor.

Well, back to work. The intake scaled fairly decent. Now on to switching the injectors and trying to get the 2200s to behave.

[Murlo26]

Sweet, now you will have some MAF scalings for my car :)

Let us know how the injectors work out :)