GT-ER

iTrader: (4)

Try this. http://www.stealth316.com/2-calc-idc.htm

Input the IPW ( available in cipher ) and engine rpm to get IDC at that specific rpm.

maXmood

iTrader: (16)

^^thanks!!

i'm @ 70%..

6500rpm with 13 IPW

FYI, i'm running 2.87 with 600cc, i have no FMU but only 255lph walbro pump.

GT-ER

iTrader: (4)

You still haven't solved the problem with your car though correct? Last I read you still needed to tune? I wonder if you'll run into the same problem as me.

I can't wait to get my wideband back...I feel like starting a new tune from scratch. I think my IPW is being incorrectly calculated by the ecu which might explain everything ( except the lack of power..lol ).

maXmood

iTrader: (16)

^yea, still haven't tuned it.. we'll see how it goes on Sunday.

and yes, do it from scratch to see if you have missed something out.

GT-ER

iTrader: (4)

I'm looking at the flow chart for my injectors and they aren't 600cc injectors...they are actually 550cc injectors @ 3bar which is the industry standard. At 3.5bar they flow 600cc but that just makes the comparison null when looking at other injectors rated at 3bar. Guess it's time to upgrade.....urrrggg...

Cux350z

iTrader: (162)

But the stock 350z base fuel pressure is 3.5bar at idle. If you have a FPR you can increase the fp by 1lb per lb of boost and the injectors will hold their 600cc rating.

GT-ER

iTrader: (4)

I know, but when comparing to other vehicles I have to compare the injectors at 3bar because that's how injectors are rated.

Now I have to decide whether I want bigger injectors or a FRS....decisions decisions.

Cux350z

iTrader: (162)

You should compare them at what they flow on your car not in someone elses or on some other platform.

They are 600cc at 3.5bar which equates to 550cc at 3bar but your system is a 3.5bar system.

Get the fuel return and you will have better results. Add 1psi of pressure per psi of boost to offset the boost pressure. Your IPW will go down and you should have a more consistent tune.

binder

iTrader: (8)

dead spot in fuel map that needs to be increased.

i have a lean bog at 2k right now which is annoying because it's right where my rpm drops when i shift under normal conditions. Little more tuning and it should be fixed though.

GT-ER

iTrader: (4)

Nope, the only time it start to go lean is where the injectors max out which is at 6000+ because they are at 100% DC.The jerk is still a mistery to me ( why a NASTY jerk as if the ecu cuts 100% power? ). I'm on the 3.12 pulley again and everything is perfectly fine now. Guess fuel return system it is....