Whats the cause of low cylinder air mass?

[WS6FirebirdTA00]

yeah, you don't really want to run injectors over 80%. The closer they get to 100% the harder they are to control perfectly.

[01WS6]

Whats the possibility of my IDC changing after i rescale my injectors according to my fuel pressure?

[WS6FirebirdTA00]

your IDC should not change unless the fueling changes. Depending on which way you rescale them, you will need to fix the VE/MAF accordingly.

[01WS6]

Would the IDC not drop from adding more lb/hr with the same amount of pulse width?

Also where can i get some info on stock injectors for a '01 trans am so i can use that to rescale my IFR table?

[WS6FirebirdTA00]

Like I said, once you adjust the flow rate, you will need to redo the VE/MAF to bring the fueling back where it needs to be. Then your pulse width will be the same.

You can copy the stock tables out of a stock tune from a 2001 Fbody.

[01WS6]

I have the stock IFR table but i was going to use redhardsupra's IFR spread sheet to adjust for the change in fuel pressure. I dont know the injector rated fuel pressure or the injector rated flow rate.

[WS6FirebirdTA00]

ah, they are rated at what ever your stock reading is in the IFR table at 0 kPa, and are at 58 psi. I am not sure if this is still the spread sheet I gave him a while back or not, but if it is, you will have to modify all the individual values by hand based on manifold vacuum.

[01WS6]

This is the one i have. I used it to scale some 42# green tops and it worked great!

[WS6FirebirdTA00]

OK, yea that is it. You will need to modify the fuel pressure in each individual cell under stock values.

[01WS6]

Thanks! Im going to redo my whole IFR table (or at least the MAP pressure i actually see) when i get done with these damn finals!

[WS6FirebirdTA00]

I am glad I am through with school, finals always sucked

[01WS6]

I adjusted my fuel pressure accordingly and the airmass is still low! What do i do now? Here is the latest log that i took today.

[redhardsupra]

post the corresponding tune, let's make sure it's proper

[01WS6]

Here ya go.

[01WS6]

Here is a screen shot of everything since your not able to see my custom PID's. This was also a commanded 3rd gear pull from about 3000-6000.

[WS6FirebirdTA00]

Unless your WB is off, then I don't see anything weird. Have you dynoed the car? Who ground that cam?

[01WS6]

Yeah, that log was on a mustang dyno. The cam is from Texas Speed. It's a 233/239 .610/.605 112+2

[WS6FirebirdTA00]

What did the car dyno? I was going to say a smart ass remark that I hoped it wasn't a TSP cam, that may be the problem right there In comparison to other cams, most of theirs have piss poor results IMO (along with a lot of their other stuff).

[01WS6]

What did the car dyno? I was going to say a smart ass remark that I hoped it wasn't a TSP cam, that may be the problem right there In comparison to other cams, most of theirs have piss poor results IMO (along with a lot of their other stuff).

lol...The weird thing about it is that it put down 377 on a dynojet about a year ago and yesterday it put down 367 on a mustang dyno. So it would of gained power and all i have done to it was retuned it.

[WS6FirebirdTA00]

yeah, that power sounds about right for that g/cyl. That sounds about right though for a power loss to a mustang dyno, my friends car made around 290 on a dyno jet and low 280s on a mustang dyno (stalled auto)