Jump to content
SAU Community

Recommended Posts

Hey guys, im guessing this has been roughly covered before but did some searching and couldn't get a definitive answer.

Im after some info on piping size I should run.

im putting a 3076 or 3071 on 6boost mani with a r34 gtr front mount so its got 3" inlet and outlet.

im also getting a plazmaman with new tb of whatever size I need.

im looking to get 300kw or just over atw with minimal lag so I don't want to go 3" piping if itll just add lag.

what I was thinking is 2.5" from turbo to ic with a reducer and then 3" from ic to the tb and obviously get a 76mm tb

will this be the best way or should I just keep it 2.5" all the way and use reducers either side of the gtr ic.

Stock throttle body has the traction control butterfly on it which is gaids for a FFP installation. Either obtain a new TB or a TB from a Stagea Neo. Note that factory ECU+Nistune is barest minimum to permit that sort of change. Standard ECU will of course have kittens if left to itself.

johnnilicte - how much more lag am I looking at, surely not much being still on the standard runners..

GTSBoy - Im ditching the traction control, and as stated purchasing a plazmaman throttle body.. and I already have a power fc

scotty nm35 - pretty sneaky there, never even thought of running it that way, probly not the best for flow though..

any way of making the hole through the side look standard like a gtr, im going with all black plenum and piping for that reason

scotty nm35 - pretty sneaky there, never even thought of running it that way, probly not the best for flow though..

any way of making the hole through the side look standard like a gtr, im going with all black plenum and piping for that reason

It flows better than a return flow, and less piping.

I never understood why the pipe goes underneath the cooler in the return flow setups, and the core is always hiding up behind the intrusion bar. Not good for cooling imo.

johnnilicte - how much more lag am I looking at, surely not much being still on the standard runners..

GTSBoy - Im ditching the traction control, and as stated purchasing a plazmaman throttle body.. and I already have a power fc

scotty nm35 - pretty sneaky there, never even thought of running it that way, probly not the best for flow though..

any way of making the hole through the side look standard like a gtr, im going with all black plenum and piping for that reason

around 200~300rpm, have a look at the dyno charts on the RB25 turbo results

I never understood why the pipe goes underneath the cooler in the return flow setups, and the core is always hiding up behind the intrusion bar. Not good for cooling imo.

I had my return flow custom made (in 2000!!!) and we put the return pipe behind the reo. Core is using the whole opening of the GTR bar. Very successful.

btw johnnilicte im thinking of getting a custom plenum still on the standard runners, possibly a slightly smaller one would let it spool up earlier than the 5.5L capacity advertised by plazmaman??

if I get a custom one it will most likely be from racers choice, a local fabricator..

I want to go forward facing to tidy it up a bit and make plug changes easier

Just get the Plazmaman one, it's nicer.. most other fabricators use sharp edges etc... where as the Plazmaman one is nice and smooth promoting better airflow...

I still say stick to the stock one, unless you're chasing 350kW+ :)

Look at AngryRB, he's made over 320kW+ on the stock one.

Yuh, the whole "nice and tidy and easier plug changes" thing is a bit of a tired line. You only need to change plugs infrequently, and it is no more than 15 minutes work to get the crossover pipe off if you have to.

There are distinct negatives associated with FFPs (usually they cost response and the cops love them), with barely enough positives to justify....for a street car. On a race car, go right ahead and spend your money.

I already spoke to the guy, hes a friend of a friend, said he would do a good price (less than plazmaman) and has the machine to roll the alloy so it will be rounded like the plazmaman.

I know the plugs aren't that much of an effort, but it just looks heaps better than the pipe coming out and then swinging back over the top of the motor.. im hoping to have everything black so as to not draw too much attention when the bonnets open

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

    • Hi, is the HKS  Tower Bar still available ? negotiable ? 🤔
    • From there, it is really just test and assemble. Plug the adapter cables from the unit into the back of the screen, then the other side to the car harness. Don't forget all the other plugs too! Run the cables behind the unit and screw it back into place (4 screws) and you should now have 3 cables to run from the top screen to the android unit. I ran them along the DS of the other AV units in the gap between their backets and the console, and used some corrugated tubing on the sharp edges of the bracket so the wires were safe. Plug the centre console and lower screen in temporarily and turn the car to ACC, the AV should fire up as normal. Hold the back button for 3 sec and Android should appear on the top screen. You need to set the input to Aux for audio (more on that later). I put the unit under the AC duct in the centre console, with the wifi antenna on top of the AC duct near the shifter, the bluetooth antenna on the AC duct under the centre console The GPS unit on top of the DS to AC duct; they all seem to work OK there are are out of the way. Neat cable routing is a pain. For the drive recorder I mounted it near the rear view mirror and run the cable in the headlining, across the a pillar and then down the inside of the a pillar seal to the DS lower dash. From there it goes across and to one USB input for the unit. The second USB input is attached to the ECUtec OBD dongle and the 3rd goes to the USB bulkhead connected I added in the centre console. This is how the centre console looks "tidied" up Note I didn't install the provided speaker, didn't use the 2.5mm IPod in line or the piggyback loom for the Ipod or change any DIP switches; they seem to only be required if you need to use the Ipod input rather than the AUX input. That's it, install done, I'll follow up with a separate post on how the unit works, but in summary it retains all factory functions and inputs (so I still use my phone to the car for calls), reverse still works like factory etc.
    • Place the new daughterboard in the case and mount it using the 3 small black rivets provided, and reconnect the 3 factory ribbon cables to the new board Then, use the 3 piggyback cables from the daughterboard into the factory board on top (there are stand offs in the case to keep them apart. and remember to reconnect the antenna and rear cover fan wires. 1 screw to hold the motherboard in place. Before closing the case, make a hole in the sticker covering a hole in the case and run the cable for the android unit into the plug there. The video forgot this step, so did I, so will you probably. Then redo the 4 screws on back, 2 each top and bottom, 3 each side and put the 2 brackets back on.....all ready to go and not that tricky really.      
    • Onto the android unit. You need to remove the top screen because there is a daughterboard to put inside the case. Each side vent pops out from clips; start at the bottom and carefully remove upwards (use a trim remover tool to avoid breaking anything). Then the lower screen and controls come out, 4 screws, a couple of clips (including 3 flimsy ones at the top) and 3 plugs on the rear. Then the upper screen, 4 screws and a bunch of plugs and she is out. From there, remove the mounting brackets (2 screws each), 4 screws on the rear, 2 screws top and bottom and 3 screws holding in the small plates on each side. When you remove the back cover (tight fit), watch out for the power cable for the fan, I removed it so I could put the back aside. The mainboard is held in by 1 screw in the middle, 1 aerial at the top and 3 ribbon cables. If you've ever done any laptop stuff the ribbon cables are OK to work with, just pop up the retainer and they slide out. If you are not familiar just grab a 12 year old from an iphone factory, they will know how it works The case should now look like this:
    • Switching the console was tricky. First there were 6 screws to remove, and also the little adapter loom and its screws had to come out. Also don't forget to remove the 2 screws holding the central locking receiver. Then there are 4 clips on either side....these were very tight in this case and needed careful persuading with a long flat screw driver....some force required but not enough to break them...this was probably the fiddliest part of the whole job. In my case I needed both the wiring loom and the central locking receiver module to swap across to the new one. That was it for the console, so "assembly is the reverse of disassembly"
×
×
  • Create New...