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Some Question Before My Upgrade Week (Finally)!

itpesaf

By itpesaf,
in V Series (V35, V36, V37 & Infiniti)

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t5iv Grand Master

t5iv

Posted
Posted

Sure.. and I think you make a good point in that if you are going FI, to do it properly. We don't want to see anyone buying a $5k turbo kit, fitting it, winding the boost up and ending up with a pile of molten metal..

Power can be addictive too.. some just want simple NA mods to make few extra KW.. then want more and go with cams and ECU tune.. and eventually realise they have to go FI to get any more.. and could have gone straight to a FI setup with less $$ in the first place. I guess that is what you are trying to warn against?

Some are happy with just a bit more than stock, and will leave there.

^this.

It all depends on what you want out of your system. Do you want a circuit monster, a dyno doll, a luxe spec machine etc?

Personally, with the V35, I'd just make her look the part, give her a little more go than stock (similar mods to Andrew) and be fine.

For raw power, probably grab a 32 Gt-R or something from that era and work it. We'll see. :)

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sonicii Veteran

sonicii

Posted
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Spot on. It's easy to get bitten by the bug and it definitely bit me on the arse mighty hard. After the CAI and ignition system weren't enough, it was then the nitrous, then it was the turbo. From there on in, I swore to myself to go straight to the top if I wanted serious power but that's in a distant future for this animal, I reckon. We'll see. :)

Hopefully I haven't made myself out to be a pretentious arsehole in voicing my opinion and let's face it, we all have one (of each).

It's all good.. I got fried recently for sharing my opinion on suspension bracing, after finding it made no noticable difference on my old J30.. the J30 copped a bit of a verbal in the process!!..

itpesaf Collaborator

itpesaf

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Thanks for the replies.

Yeah I'm thinking of starting off with the 5/16 basic plenum spacer and a z tube. I'm actually not spending any money on these myself - just got asked what I'd like for my birthday and as there's nothing else I really want atm I'm happy to get these items.

tbh I'm kinda over spending heaps on my engine and car (have had 2 wrx's and an s15), and have been more happy with the last 2 NA cars I've had (s2000, v35) than my first few turbo cars which had a lot more power - so it's not all about power for me, but I guess I'm kinda curious and keen on extracting a little more power from the engine (not too fussed on massive power gains).

thanks

itpesaf Collaborator

itpesaf

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Ok so an update

I've decided to go with a motordyne basic plenum spacer, a z-tube and perhaps even a rev-up airbox.

Now here's a question - the z-tube is basically a tube that costs around 150 shipped. Could I get away with buying a cheapo intake kit from ebay (which comes with required aluminium piping) and have it work just as well as the z-tube? I'm thinking of going this route as theres a considerable cost saving.

sonicii Veteran

sonicii

Posted
Posted

the Z-tube isn't really going to yelid you any extra KWs, so if you can find a tube of the same size/shape, it should give a similar 'sound'. However, the danger of using aluminium instead of plastic is it will tend to conduct more heat into the air inside.

Mayo_85 Enthusiast

Mayo_85

Posted
Posted

If you want the Z-Tube and Rev-up air box check out Perri Infiniti on eBay, they do a package deal on parts

http://www.ebay.com.au/itm/OEM-NISSAN-INTAKE-Z-TUBE-REV-UP-AIRBOX-K-N-DROP-FILTER-KIT-NEW-/261103668417?pt=Motors_Car_Truck_Parts_Accessories&hash=item3ccafdccc1#ht_4394wt_962

I got both items plus the Motordyne basic spacer for $400 shipped to Geelong VIC. I went with this setup over the Pop Charger to keep a factory look and to save on heat soak. Nissan would spend R&D on a new air box and different intake tube for the Z for no gain (even if its just throttle response, that's still a gain).

itsRICHARD Collaborator

itsRICHARD

Posted
Posted

I installed a light weight pulley, plenum spacer, throttle body spacer and jwt intake with z tube, I love the sound the intake gives, it's amazing! Performance, I felt a little bit of mid-end power and torque, not much though, but friend said he felt a big difference, maybe it's just me

GED59 Enthusiast

GED59

Posted
Posted

I installed a light weight pulley, plenum spacer, throttle body spacer and jwt intake with z tube, I love the sound the intake gives, it's amazing! Performance, I felt a little bit of mid-end power and torque, not much though, but friend said he felt a big difference, maybe it's just me

i've done the same with out the pulley, definately noticed better performance :thumbsup:
  • 1 month later...
itpesaf Collaborator

itpesaf

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hey guys just wanting some advice with regards to my high flow cat installation -

1. how long should the job take at an exhaust shop? (hopefully i'll be taking it in to exhaust plus to get them fitted and wanted to know how much time it should be taking them)

2. do i need to retain the stock cat heat sheilds, or can i do away with them?

thanks

oh and I also bought a z tube, rev-up airbox and k&n filter package! can't wait till everything is in.

With the HFC's, plenum spacer, z tube, rev-up airbox and k&n filter, should I be expecting around 160rwkw?

Nightcrawler Grand Master

Nightcrawler

Posted
Posted

Changing over cats should take about an hour. But my passenger side cat lightly touched the underbody, so I had to pay $100 to get it cut and re-welded at a slightly different angle. They were supposed to be bolt-on ....

Yep around 160rwkw sounds about right. Depending no the dyno maybe even a touch more depending on whether you have touched the rest of the exhaust or not.

falconcoupe Rookie

falconcoupe

Posted
Posted

I have kinetix's "revised" hi-flow cats (supposed have better clearance) and I had to bend the heat shield attached to the underbody to stop it from touching... This was also the passenger side like Nightcrawler

Nightcrawler Grand Master

Nightcrawler

Posted
Posted

Yeah but there are dynos and then there are dynos. It is laughable some of the people here in Adelaide that have had their cars tuned/dynod at well known workshops with 'happy' dynos, then they come to one of our club dyno days at Willall Racing, and are very sadly disappointed that their insanely high magical dyno number is only 80% of the 'happy' dyno number. Typically dyno dynamics are 10-20% higher than mainline dynos, as they use a fudged 'X factor' to allow for ramp up rates, tyre profiles, number of cylinders that car has, humidity, temperature etc etc. If you change this 'X factor' number it changes the dyno figure significantly. Mainline dynos have no such bs, and run a raw number that cannot be fudged.

The only way to really compare cars power levels is to run the cars on the same dyno on the same day.

itpesaf Collaborator

itpesaf

Posted
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Ok it the high flow cats installed and here's what I think -

The car definitely feels more responsive, the revs seem to climb at a faster rate than before. The car feels a little more powerful towards the top of the rpm range. The sound is probably the most significant change, it definitely sounds beefier - which is great as I can hardly hear the annoying rattling sound I sometimes get from under the car when I'm in high gear/low rpm lol.

I can't wait for my z-tube/rev-up airbox/k&n combo and plenum spacer to arrive :D

I reckon after these mods the only other two performance mods I might do is a tune (any help on where to tune in Adelaide would be great :D) and a y-pipe (although no too sure if it'll be worth it).

itpesaf Collaborator

itpesaf

Posted
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Just a quick update -

got the plenum spacer, z tube and rev-up airbox installed the other night.

After having driven the car a bit, it's noticeably more responsive and the sound coming from the engine bay is deafinately a little throatier. I'll be dyno'ing the car sometime soon to see how much power I'm making with all these mods. As it is the car is about as quick as I want it to be, the only thing I might do in the future is try to get some more low down torque (don't know what mods would be best for this).

I'll probably have to do the throttle body reset however because when I start my car up sometimes (after it's warmed up) the idle is a little funny.

Would I recommend these mods?

All depends on what you want, if it's just more power then go turbo or sc. However if like me you just want a more responsive engine with a little more power, than these mods are great.

Nightcrawler Grand Master

Nightcrawler

Posted
Posted

^^ you can't 'tune' a V35 .... unless you have the Osiris software or a stand-alone interceptor like my SAFCII or a Unichip (or equivalent).

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