Jump to content
SAU Community

Recommended Posts

Hi guys,

I've done a search for this but wasn't able to come up with much so I'm just wondering if anyone on here knows what the advantages are of upgrading to a forward facing plenum in a 33 GTSt.

From what I understand so far the advantages are shorter cooler piping (less pressure drop) plus colder intake temps. Is there anything else I should know and what have ppls experiences been (ie is this a good value for money mod).

Most ppl on here seem to upgrade to a greddy branded product but are there any other good alternatives out there for the GTSt? (eg GTR plenum)

Last question is how defectible is an aftermarket plenum in Victoria. Due to the "one intake modification" only law I would have thought that this would make it very difficult to get a defect cleared due to the fact you would have to put the stock plenum and intercooler back on.

Any advice/experiences much appreciated

Regards Taso

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/
Share on other sites

all up i probably have 3-4 ft of fmic piping-PRO

looks cleaner, ^^^^ easier to access plugs- PRO

its a bit cramped down the side, so getting to the oil filter can be....difficult-CON

you can upgrade to a larger t/b - PRO

you can delete the BOV- PRO

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/#findComment-4478777
Share on other sites

you can upgrade to a larger t/b - PRO

you can delete the BOV- PRO

No and no unfortunately.

Legalities wise, as per the first post, he cannot upgrade/change those two things

Plenum i do believe you can change, as long as you keep ALL the factory bits on the plenum side to do with emissions.

So stock T/B, all hoses, breathers and whatever else is there... BOV included. Or just put a GTR BOV on, thats also legal as its plumb back.

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/#findComment-4478809
Share on other sites

Also...

I made 270rwkw on pump, 370rwkw on fuel (and more boost)... stock top end (minor head touch up) and my response was as good as any other car with a 600hp turbo.

Overall... honestly the money is far better spent on a turbo and other areas.

Especially in Vic. A plenum just makes the cops look harder

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/#findComment-4478882
Share on other sites

bloody hell VIC must suck ass... only one intake mod haha

On a relatively stock gtst its not worth the upgrade, money is best spent elsewhere. It does clean up the engine bay alot though and shorter intake piping is always going to be a winner

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/#findComment-4478909
Share on other sites

Thanks for the info guys, very useful indeed. I guess the reason i wanted to do it was because it just makes the engine bay so much tidier and its such a waste having the cooler pipes bending around.

Why couldn't nissan have fitted GTSts with FMIC and front facing plenum. MAkes my blood boil, would have saved us so many headaches

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/#findComment-4479420
Share on other sites

I'm thinking that shorter cooler piping would improve the response of the car?

Can anyone confirm/clarify this? This is the next step that i'm looking at doing - upgrading the intercooler and getting a forwards facing plenum as my goal now is to increase my response as est as possible for the setup.

So, for all those with a forward - facing plenum - did you guys notice better throttle response with the shorted cooler piping?

cheers

phantom

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/#findComment-4479426
Share on other sites

Thanks for the info guys, very useful indeed. I guess the reason i wanted to do it was because it just makes the engine bay so much tidier and its such a waste having the cooler pipes bending around.

Why couldn't nissan have fitted GTSts with FMIC and front facing plenum. MAkes my blood boil, would have saved us so many headaches

They did it to the Silvias, front facing plenum i mean, and had the I/C piping looking like an aftermarket GTSt!

In they end the engineer the car do produce certain power. And an SMIC is sufficient for the power they make in standard mod/boost form.

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/#findComment-4479449
Share on other sites

I guess the reason i wanted to do it was because it just makes the engine bay so much tidier and its such a waste having the cooler pipes bending around.

Not worth it just for looks, or bragging rights. I have one just because I did the 3.0L conversion, not sure if it improved throttle response because of the other changes I did. If your thinking about getting a china manifold I'd think twice there too considering the gamble on quality and the lack of parts they supply with it (not to mention its fake)

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/#findComment-4479903
Share on other sites

afaik benno @ racepace can get a hold of the blitz adaptor plate to put a GTR plenum on a gtst... still a lot of work tho

imho not worth it unless you are really concerned about cosmetics or have a spark plug changing fetish

Link to comment
https://www.sau.com.au/forums/topic/261210-greddy-plenum/#findComment-4480447
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...