after reading a whole lot of reviews about performance mods im still confused about what gives low end and mid range tq and hp...supposedly an exhaust gives high end, hence im getting a injen ses exhaust...but i still want some more low to mid range power

any suggestions....NA only (dont have the money for the stillen sc

 

Displacement

 

checkout this dynograph

https://my350z.com/forum/showthread....threadid=48106

Victor

 

right..i read that..but thats a 3000 package (if you factor in the borla)

will a combo of headers(borla) test pipes(mines) and exhaust (injen) and plenum (crawford)

give the same gains as the 'all crawford' package???

someone needs to find out....i would love for it to be me...but it will take a while to even raise that kinda $$

 

I second Mike's post and would definately add some UR Pulleys to the mix along with an ECU upgrade to top things off. I have the Pulleys purchased (from Zoasis) and have decided on the Crawford cats and Headers. I will send my ECU in to TS after getting everything installed. That will do it for performance mods for me. Some nice cams would be fun but too much money for the install if you ask me, since I shouldn't try it on my own. I can at least do the rest myself, although the headers will be a fun weekend I am sure.

 

what made you decide on those headers for 1300?

and tuning the ECU..how much does that cost...and is it a must when you get the new performance parts...or is it just something that makes everything work better?

 

If you want to do it methodically with little money at a time I would go this route:

1. Test Pipes or HF Cats ($250-500)
2. UR Pulleys ($350)
3. Crawford Plenum ($500)
4. Injen SES or another dual catback ($650-1100)
5. Crawford Headers ($1300 + install)
6. Injen CAI (GruppeM if you have the $$$) ($250-600)
7. Cams if so desired ($1200 + install)
7. TS ECU upgrade specific to the mods ($600)

One could go with the XERD headers right away for ~ $750 which would replace the need for test pipes or HF cats, but they will not give you as much TQ through the middle. It really depends on how much you want to spend and how badly you want the gains. I enjoy doing the installs myself which saves quite a bit as well. Just my thoughts.

 

The Crawford headers seem to be designed to increase the torque throughout a large RPM range and not simply increase peak HP numbers. The Pulleys are a pretty simple install and for $350 they are a nice bang for the buck mod (you could also simply go for the crank pulley which is $200 plus the belt). The Technosquare ECU upgrade needs to be at least close to the last mod unless you take it really slow. The reason is that they will set it up for the mods that you are running. It will help keep the A/F ratio consistent which is important for performance and engine reliability. Their ECU upgrade will also increase the Rev limiter to 7100 rpms, keep the throttle body open all the way to rev limiter, and eliminate the speed limiter. It is a nice mod for $600, I am just waiting until I have my mods done so that I do not have to send it back into them and pay for every change I make.

 

thanks for that info...really helps...although i am not really going according to your list...i am getting the injen ses and injen intake this week (from DAKING)...then i will prob buy the crank pulley and test pipes

my last 2 mods will be headers and the ECU....i have one question though...will borla or nismo or any other headers produce totally different #'s than the crawford?...(im talking about the power across the band) because they all pretty much have the same peak #s

 

They all produce different numbers because of their designs. Borla isn't an equal-length headers so it gains the least. The NISMO is a little more equal lenth but not as much as the Crawford units. They don't all have the same peak #'s. The Borla typically gains the least, the NISMO next, then the Crawford with the greatest gains.

If they produced the same numbers, everyone would be out buying Borlas.

 

hmm...your right..didnt think of that...i guess headers will be coming only if i make a lot of $$ this christmas season....and would it make sense to get the crawford cats if i plan on going with their headers or should i try the test pipes?

 

You could go either route. So far this is what I have seen between this comparison.

HF cats:

Pros= More earth friendly, shouldn't have an emission issue, not as loud as test pipes, may eliminate raspy sound (not completely proven as of yet)

Cons= More expensive, not as high of gains vs. test pipes but close, heavier than most test pipes

I think the only reason people are going with HF cats is because of the emission issue.

 

yeh...how do ppl pass inspection with test pipes....i mean i know they Dont...but does that mean i have to swap every time i go for inspection

 

if i was going to go with those test pipes with the resonator (LBSM i think) would it just make sense to go with high flows to avoid the sniffer headaches?

 

My cat goes back on my car once a year for about 2 hours, then it's back off. My poor car hates the spool time with that thing on.