tuning with NIStune

[s13envy]

So I just purchased the NIStune software and board to do real time tuning on my SR. Basics of my setup are:

Redtop SR
87mm bore JE pistons
9:1 C/R
Scat Rods
cometic HG
810 deatschwerks inj
Greddy IM
Peakboost turbo mani
SC61 BB turo
Z32 MAF (blow through)
Sard FRP
ported head
JWT C1 cams
JWT springs
BC retainers

I had an enthalpy tune previously. Since the last tune, the things that have changed were the bore, C/R, Greddy IM, Sard FPR, ported head, and used to have BC 272 cams.

I have pulled the enthalpy tune out of the chip and have saved it to my NIStune software, but the car runs extremely lean with this tune. I'm new to this tuning thing and was wondering if someone could help me out with getting this damn thing going.

anyone on here skilled enough to take a look at my current tune and edit it from there?

I appreciate any help you guys can give me.

Cole

[killswitch]

Contact Unisa Jecs he maybe able to help you.

[onepuff]

Did you try here?

Nistune Forums :: Index (http://forum.nistune.com/)

[s13envy]

i registered on the nistune forums but haven't been activated yet

[Yellow4g63]

Why not do a map trace and add fuel to the cells that need it? Is it lean all over the place? or just at WOT?

[s13envy]

lean all over the place. wont idle, drive, or boost with correct AFR's. this would be my first attempt to do any type of real tuning so I'd rather no "wing" it on this one.

I think I figured out that I'll have to change the K constant to get a global fuel change. Am I correct in assuming this? Can anyone do the math for 810cc injectors and a z32 mafs for me? it is a basic calculation right? Also, I think I'm switching to a ford lightning mafs so if someon could do the math on that one as well, that would be tits!

[onepuff]

Nistune will do the calculations for you for the injector size and maf changes. Don't forget to change the injector latency also, makes a big difference. Look around the nistune forum for a tuning writeup it should help you learn the basics. You might also try contacting matt the owner([email protected] (http://by139w.bay139.mail.live.com/mail/ContactMainLight.aspx?n=1238216096#)). He is really helpful.