I wanna know: How is a chip designed without the car on a dyno?
 

I just realized that i do not understand how a chip gets designed.
I have several questions that I know there are a bunch of you who know the answers.

1) HOW can the chip-makers just ask you for the octane you use, and exhaust system, and injector size maybe, and a few other factors, and THEN design a chip for you.

2) Is there a software program into which one inserts a bunch of variables, and it then designs the chip? (Is this how Steve Wong does it -- distance-learning?)

3) Given the mods that most of us do to the car (including reducing car weight, tire size, etc.), how can there be a chip programmed for the car without the car actually being "measured", like maybe on a dyno??

4) How in the world do you know if the chip you got is the ideal design for your car?
Certainly one's seat-pants-dyno is pure guesswork.

Appreciate some insight.
Thanks.

Very simple, they've made the tunes before from other vehicles, then saved the data.

Doubt a tune is estimated, but you could if you knew the VE difference one engine makes from the newer part(s).

Is it perfect? No, but even with say hypothetical 15% variance (would be extreme I'd imagine) between 2 different engines with the exact same parts and bits, it'll be good enough to drive fine.

This is why customizable EMS are so nice. You can keep on tweaking.

Chip, on a 930?

Sorry -- not 930 but a 3.2 Carrera turbo-to-be.

The chip I ran before on my turbo 3.2 was made by Protomotive. It did have some problem areas. PO sent it to them telling the issues, and they addressed these for about $100.

My understanding is Steve Wong offers the same, price unknown.

Thanks for the responses.
Customizable EMS makes the most sense, however, I think this will be far down the road, because this Porsche is just a project, never intended to race (and possibly never intended to drive! --- yah, it's one of THOSE cars).:mad:

You can run an MSD BTM (boost timing master) to retard timing under boost and a BEGI (Bell Engineering) rising rate fuel pressure regulator to raise fuel pressure under boost not requiring a chip.