Take back the keys!

Posted: **Thu Mar 06, 2008 11:24 am**

Does anyone know anything about scaling bigger injectors from your stock table. Ordered Some 42.5 lb injectors, hoping someone has a formula so i can scale my stock IFR Table

Posted: **Thu Mar 06, 2008 12:12 pm**

maybe this?

http://www.iroczone.com/calcs/injectorsize.htm

Posted: **Thu Mar 06, 2008 1:33 pm**

IDK how the injector calculator is gonna work for tuning other than picking an injector and fuel pressure :roll:

I always thought you tuned by a percentage differnce over a stock sized injector, like with an AFC or other.

Posted: **Thu Mar 06, 2008 6:55 pm**

RSbeast wrote:IDK how the injector calculator is gonna work for tuning other than picking an injector and fuel pressure

I always thought you tuned by a percentage differnce over a stock sized injector, like with an AFC or other.

Yeah AFC's, piggy backs those are junk for tuning... might work on a car with under 300hp but.... standalone, chip tunes or something similar is the only way.

Posted: **Thu Mar 06, 2008 7:59 pm**

He has that powertuner piggyback thing

Posted: **Fri Mar 07, 2008 12:36 am**

My tuner is nothing like an AFC ha ha it uses my OBD2 to write my pcm, I can edit any table in my pcm to tune the car. I think I found what I am looking for. Well not a conversion but just the table in general, and that percentage thing with the stock and the new sounds to be about right.

Im just waiting for the flaming of you use a laptop to tune a grand prix.

Posted: **Fri Mar 07, 2008 8:10 am**

Andrew Bozick wrote:
Im just waiting for the flaming of you use a laptop to tune a grand prix.

Sounds fine to me, its what I use, just minus the GP.

Posted: **Fri Mar 07, 2008 8:22 am**

^ Pehaps I shouldnt have used AFC as a reference but like he's finding, a ratio/percentage diff is the norm way to tune :wink:

Take back the keys!

Injector Flow Rate Scaling

Injector Flow Rate Scaling