NISMO full catback exhaust...
NISMO intake
MOTORDYNE 1/2'' plenum
..with these mods what do you think the total HP gain will be after i put in my crawford headers?

 

5 hps

 

15 maybe

 

with the headers you might be looking 20whp max.

 

7-10 Max

 

yeah 10 sounds about right, without a tune...you're not going to see much gains on this motor...cams and headers will yeild you about the best hp gain no tune.

 

+1 and maybe some HFCs...

I feel I've gained about 20whp max with everything I've done. I did the mods for few a reasons... performance, sound, longevity and knowing if I shopped around and installed everything myself, I wouldn't break the bank with only $2200 spent. Basically I'm done... I feel my Z breathes better from front to back. I had it dynod at GRD and peaked at 249/245 w/out the Nismo catbk. Good enough...

Zquicksilver

 

If your a newb your whp will be 543.
If your not a newb it'll be close to 10-15whp more.

Now go use the search button!

 

I'll jump in and optimistically say 20-25whp.

 

I thought the combination of those mods would get you in the range of TT HP gains, but what do I know? j/k

 

What, they don't...? I thought if you stacked all the "air" mods they would get you to around 300WHP. Just check out this... LOL
http://www.ultimatez.com/shop/index....14&cart=447263


Seriously though,I came across Import Tuner Mag. and they had a Z featured with various air mods. The tests seemed fairly legit, even the Kintex SSV intake with 15whp gained seemed legit when compared to the other stuff on the same dyno. I was like, HMMMM, could this be true. Then they went on to say the Z takes on "air" mods just fine and the "rumored" ECU rejecting the gains is pretty much a myth. Another, Hmmm!

So, I guess in the end, my 20whp may be fairly accurate for my setup...
Zquicksilver