Jump to content
SAU Community

rb25det plazmaman V std intake Results

boostn0199

By boostn0199,
in Engines & Forced Induction

 Share

Recommended Posts

boostn0199 Grand Master

boostn0199

Posted
Posted (edited)

rb25det plazmaman V std intake Results

Since this has been a very common question over the years of people actually wanting a proper back to back comparison of plenums on rb25 I thought I would post my results as I have done a back to back with no other changes.

Car Setup:

std rb25det

tomei 256 cams

hypergear ss2 turbo

e85

4inch straight pipe exhaust

PFC

z32afm

takashi 600x300x100 cooler

xpsurt 1000 injectors

Plazmaman Plenum

22PSI

20170112_092127.jpg

As you can see from the results there is very little change with a few kw up top gained but generally the curve has remained fairly similar with a few spots slightly better and some slightly down. Boost response also remained the same. (Orange curve is plazma and red is std intake)

 

Edited by boostn0199
  • Like 5
kingtube69 Experienced

kingtube69

Posted
Posted
Just now, boostn0199 said:

Yeah I only did it to make fixing issues at track easier if they come up I was happy aslong as results remained same.

Yeah that's a good point - pulling the stupid J pipe off every time you want to get to the coils or plugs also slows the process down. 

admS15 Grand Master

admS15

Posted
Posted
Yeah that's a good point - pulling the stupid J pipe off every time you want to get to the coils or plugs also slows the process down. 

Why do you need to pull the j pipe off? I can remove and replace coils and plugs with it in place. I use a 1/2 inch uni swivel attachment to get no.4 spark plug out.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

The standard intake plenum has been known to flow quite a bit of power,  and nissan would have spent alot of $$$ making them.

The biggest hurdle you have when going to a FFP is even distribution between all the cyl's by intake design.

If the plazmaman plenum flows even a little better horse power then a stock one then it is a win win situation because it has been tested to have even air distribution to all cyl's.

Alot of plenums people make / buy go backwards.

+1 for Plazmaman

Video of a standard unopened rb25 that I tuned a few years ago with standard intake plenum and also standard exhaust manifold,  external gate was welded onto the manifold or the rear housing i cannot remember now.

 

 

 

  • Like 2
blah_blah Grand Master

blah_blah

Posted
Posted

Nice one,

 

Im curious what sort of intercooler piping you had before hand, and if you noticed any difference in on road response/transient response from shorter cooler piping.

 

I have thought about going FFP as mine is a return flow style piping, so would get rid of about 2m of unnecessary piping, and as you mentioned alot easier to work on the spark plugs at the track which i have done a few times... 

boostn0199 Grand Master

boostn0199

Posted
  • Author
Posted (edited)
1 hour ago, blah_blah said:

Nice one,

 

Im curious what sort of intercooler piping you had before hand, and if you noticed any difference in on road response/transient response from shorter cooler piping.

 

I have thought about going FFP as mine is a return flow style piping, so would get rid of about 2m of unnecessary piping, and as you mentioned alot easier to work on the spark plugs at the track which i have done a few times... 

My old pipe work was already much shorter than std setup as I have cooler flipped upside down and piping through headlight. Hot side stayed the same 2.5inch pipe and cold side now is 3 inch and is about half the length of my old short cut piece which was 2.5inch.

Got my first track day end of the month so will see how the response is on the track also forgot to add that it is still using std throttle body.

 

here are pics of old v new cooler pipe.

15697393_10207522366886818_1890983315476

new_cooler_pipe.jpg

Edited by boostn0199
blah_blah Grand Master

blah_blah

Posted
Posted
1 hour ago, GTSBoy said:

You may think it will get rid of 2m of pipe, but it will be much less than that.  My bet is that only the engine whisperers would ever notice any difference in response.  The volume of the pipework we're talking about it f**k all.

Fair enough, mines a FMIC cooler but with return piping that goes back under the car and then through the side via the stock location. I darno racepace said to clean up cooler piping for more powah.

 

 

 

5 minutes ago, boostn0199 said:

My old pipe work was already much shorter than std setup as I have cooler flipped upside down and piping through headlight. Hot side stayed the same 2.5inch pipe and cold side now is 3 inch and is about half the length of my old short cut piece which was 2.5inch.

Got my first track day end of the month so will see how the response is on the track also forgot to add that it is still using std throttle body.

 

here are pics of old v new cooler pipe.

15697393_10207522366886818_1890983315476

new_cooler_pipe.jpg

 

Ahh nice yeah looked like your previous setup was already sorted!

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Duncan's V37.......race car?

      By MBS206 · Posted

      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!
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      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
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      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
    • RP1421
      S15 Spec R

      By RP1421 · Posted

      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. 
    • joshuaho96
      R32 GTS (RB20DE) Injectors Replacement

      By joshuaho96 · Posted

      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...