Few questions and confused on a few things.

[Pumaking]

Alright guys I'm going the CA route ready to pick my motor up from the shop when it arrives tuesday. Now I have a few goals so that you guys can give me some advice. I have a '90 hatch few cosmetic upgrades like S13 front and 180sx tails. Anyways my power goals for the CA is 300whp and around 240+ ft/lbs of torque. The car is gonna be my daily driver. Some of my mods that I have planned are:

T3/T04E TurboSSautochrome T3/T4 manifoldSpearco IntercoolerROM Edited ECU with BadBiki Live Tuning board when released.APEXi Boost Controller and Turbo TimerAutometer gauges550cc InjectorsZ32 MAFKoyo Racing Radiator Hyper Clutch kit from CuzanoCA18 rebuild kit.CA or Nismo Motor mounts.ARP Head Studspossibly CP pistons still not sure b/c of Funds.HKS SSQV.plus more just forgot like FPR and fuel pump.

Anyways as I was reading the FAQs some things confused regarding injectors. Yes I'm a car newbie but I'm still learning, and trying to figure out some of this stuff that confuses so I ask you guys about these Injectors of the High Impedance and low impedance I honestly dont know what those things mean b/c I was searching for injectors and found a place that has low impedance Peak/Hold injectors for $210 for a set of 4 brand new 550cc and they got high impedance 550cc injectors for $190 so which one do I go with for my power goals, I remember Pulsar saying something about using High impedance but tuning the ECU for them or they get fobared.

Also the recent threads regarding Spark plugs made me more confused then ever about which ones to get and this heat range, that confused me as well. So I'm stumped now on which to get b/c I hear some say go with Copper, than I hear Iridium is better but dont last long etc etc so that threw me off. Also I want to get some high quality spark plug wires which brand do you guys recommend, I did a search and turned up some people using NGK and a brand called Aurora but these people were using KA's and SR and wasnt sure if there interchangable with the CA.

Another thing I play paintball and I'm a Paintball Gun tech so hoses and lines are things I worry about so usually we use Steel braided hoses for added strength and its many benefits so I'm taking my experience and want to use Steel braided lines and was wondering where some of the people got theres from and how long did they get, I most likely will do the fuel lines steel braided and a few others.

My last question is for Dee I read your post and noticed you had a Nismo 1.2mm headgasket I was wondering where did you get it and how much price isnt much a problem just time is. I'm located in South Florida just 40mins north of Miami in Boca Raton.

Any help is greatly appreciated oh btw if anyone was wondering I have a friend who is a mechanic that will be helping me do the swap and doing the tuning as well.

I'll post lots and lots of pics when my motor arrives and parts to etc etc.

[float_6969]

First of all, welcome, and thank you for a post well done. You get a cookie!!! In answer to your questions...

You can use either high impedence or low impedence injectors, but the low impedence will require the least amount of work.

I personally talked to a tech at NGK and after explaining to him in detail about our motor and my goals, the plug that he recommended was the BKR7EIX. As for the plug wires, good luck finding a set for the CA18DET. It doesn't have any plug wires. It uses a coilpack setup and the coils are placed directly on top of the sparkplugs, thus negating the nessecity of plug wires. How cool is that?!?!

Lots of places have stainless steel lines. I would HIGHLY recommend checking out some of our advertisers. I believer both Enjuku Racing and Heavy Throttle both have stainless steel lines.

Over to Dee for this part....

Help on your first swap is always a plus. It always helps to have 2 heads working on something. That way when you screw something up, you can blame it on the other guy!

I can't wait!

[Pumaking]

is there any advantages to using high or low impedence. Would it be worth the extra for the high impendence or regardless of each one both will perform the same just high impedence will take more work to function properly. Also exactly what is required to get the high impedence to function.

[c-rad]

is there any advantages to using high or low impedence. Would it be worth the extra for the high impendence or regardless of each one both will perform the same just high impedence will take more work to function properly. Also exactly what is required to get the high impedence to function.

Hope this helps...

"Most OE applications use high impedance (12-16 ohm) injectors due to their lower cost and the ability to use saturated drivers in the COMPUTER. Lower impedance injectors (2-4 ohms) respond quicker (shorter rise time) but necessitate the use of peak and hold drivers which are not only more complicated but more costly to manufacture. By design, a saturated driver will keep current draw constant during its whole duty cycle. Conversely a peak and hold driver will initially surge the current up and then step it down to a lower value and maintain that value throughout the event. If a peak and hold injector or driver is rated at 4/1 amps that translates as 4 amps to open the injector and 1 amp to keep it opened. Historically, tests have proven that a low impedance injector will have a rise time of just below 1.5 MS, while a high impedance unit can approach 2 MS."

I got that off a "How EFI Works" site.

In a nutshell, low impedance are better in a high performance situation due to the quicker response time.

[Pumaking]

thanks for clearing the confusion for me, one question regarding the injectors, I noticed something about top feed and side feed? Any difference, one better than the other, does it matter which I get?

[NeedCAforS13]

top feed are WAAAAY better and easier to find... lucky for you, the CA fuel rail is a top feed design, meaning unless you want to make a custom fuel rail, you can ONLY use top feed injectors

Sean

[81na ZX]

lucky for you, the CA fuel rail is a top feed design, meaning unless you want to make a custom fuel rail, you can ONLY use top feed injectors

Sean

Yet another bonus over a certain other Nissan 4 cylinder

[cadet]

or a ton of other engines...anyway to use low impedance injectors on the ca you are going to have to wire resistors in line with them, thus rendering them high impedance injectors for the purpose of response time...which negates the claimed advantage that was claimed in the above post...

[r34 gtr]

no no NO!!! the ca uses LOW IMPEDANCE INJECTORS. 2.4ohm in fact. dont even bother with the high impedance units as the low impedance ones are (apparently) quicker responding, and you wont have to do jack except drop them in.

as for plugs, i just go to auto zone and ask for plugs for a ca18de and then go 1 or 2 steps colder. im using some denso copper plugs right now that kick some serious ace and cost me less than $1.50 each. dont bother with anything other than copper because there is no noticable difference that ive seen. its not worth paying 40 bucks for plugs when some basic ngk or equivalent will do just as good a job and cost you about 1/8 the price.

stainless line wise, you might just want to have some made for you. just figure out what size fittings you need. (for the record, the coolant lines for the turbo are -06an and the oil fees line is -04an. it took me forever to find that bit of info). you can get them from aeroquip or xrp or earl's or wherever.

i can tell you that dee got that head gasket from one of his boys and that he will probably be glad to sell you one. i got one from him but it was in no way cheap.

- tim

[cadet]

ca's are low impedance? ahh ok. I should not assume things from my experience with my other nissans. well, then you can't run high impedance injectors on the stock fuel managemenet... not even using an safc, right?

[Pumaking]

how much did the headgasket cost you GTR, price isnt really a concern I got plenty of time I just want to get key components first and injectors and headgasket is one of them.

[81na ZX]

no no NO!!! the ca uses LOW IMPEDANCE INJECTORS. 2.4ohm in fact. dont even bother with the high impedance units as the low impedance ones are (apparently) quicker responding, and you wont have to do jack except drop them in.

And they are usually cheaper and very pleantiful AND not limited in size.

not that it matters to too many people, but you can't get a high impadence over 750cc. low impadence easily go upto 1600cc's

[c-rad]

Its nice having cheap injectors available. Just go to any DSM site and you can get em. There are a few guys who sell them (ebay included) for $209 for a set of new 550s. You can't find a set of 550cc side feeds for less than twice that.