Jump to content
SAU Community

Recommended Posts

Hi,

I have a R32 with a RB20DET and I want to raise the boost.

Im buying a boost controller and I was wondering how high could i raise the boost? I was hoping that I could raise the boost a bit without buying more parts.

Will I need a bigger fuel pump and other parts or can i just raise the boost??

Any Help would be Great!

It has:

R34 Turbo (running 7psi, stock boost)

3 inch excust system

Front Mount Intercooler

K&N Air Filter

Lighten Flywheel

Thanks!

Matt

Dear Matt,

Firstly, look up Cubez on the members search. He is a expert on the R32. I would suggest the R33 High Flow as it makes a huge difference and to get a electronic boost controller as it holds boost much longer. You can just wind it up yourself and the good thing is these turbo's are cheap at $600 so it is a good risk. Just dont go over the 12 pound mark. But truth being, a dyno tune would really hit the spot and make it all worthwhile.

You definitely need a fuel pump before that. I got a Walbro on mine and picked it up for only about $200. It worked wonders and is alot cheaper than a Bosch 0.40. PM me if you want more info

in answer to your questions in a simplified form...

will i need a fuel pump? yes

how high can i raise the boost (safely)? 12-14psi is ok with that turbo on an rb20

what other parts will i need? a boost controller. the fact that you already have full exhaust / FMIC is great and this is the enxt logical step of modification

good luck,

Warren.

I ran 16psi on mine constantly without a fault, but i could have been lucky...

From memory (which is far from faultless), you should be able to get 200+rwkw from the stock injectors. Even if it was within your fuel pump's limits, i'd get a new one cos the extra stress on the probably 10+yr old pump might end its life prematurely.

The 2 best mods i made on mine were the S2 RB25 turbo, and possibly the best, a chipped ecu afterwards. Its a pretty good street combo after.. Nice power, and hardly any, if any more lag than stock. Good luck!

Changing fuels pumps doesn't affect anything except it's ability to give more fuel up high with more boost.

That said I put a walbro in once and the pressure increased dramatically at low revs making it run too rich. A second hand GTR pump fixed that and is a good cheap upgrade for you too.

Thanks for the info!

I ordered my boost controller yesterday so it should arrive in a few days. I just gotta find a new fuel pump and boost gauge. I was thinking of getting the Bosch 040 fuel pump or a R32 GTR fuel pump. Does it matter if the R32 GTR fuel pumps are 17 years old?

Dragged a R33 last night and owned it :P

Thanks for the info!

I ordered my boost controller yesterday so it should arrive in a few days. I just gotta find a new fuel pump and boost gauge. I was thinking of getting the Bosch 040 fuel pump or a R32 GTR fuel pump. Does it matter if the R32 GTR fuel pumps are 17 years old?

Dragged a R33 last night and owned it :P

Bosch pump will be harder to fit than the GTR pump but one would expect it to be more reliable than an old GTR pump. With the level of mods you have you would benifort greatly from an ECU tune this will iron out any problems the new pump may cause.

cheers

17psi will go hard :unsure: But makes ur turbo crap itself... lol

Id leave it at 1bar if your someone who wants occasional drags and doesn't drive the car hard all day everyday. If you are abit like that try 12psi as the turbo will last longer.

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

    • Right, here's a video of the basic operation at least.  This is what you can expect day to day when you turn the car on and it boots from standby.  The only thing from a media point of view I haven't gotten working is for it to autoplay plexamp when it turns on from standby (it works from cold boot) but that's more of a plexamp problem as it will autoplay other music players.  Also attached is my one stray cable.  It's part of the screen's wiring adapters but there's just nowhere for it to go in my car.  I've just now done a bit of research and found a matching port on a 2010-2014 head unit with BOSE.  Mine has no BOSE so that's that case pretty much closed I think.  Plugging in the Infiniti AC panel basically did nothing for me, so that's a dead end as well.  Next port of call is to mess with this CANBUS module and see what I can find from it.  I found this resource containing the DBC files for a 2010+ G37 : https://github.com/icecube45/Dash_InfinitiG37/blob/master/InfinitiG37.dbc I'll now have something to go from when I try to extract my CANBUS data so I can see if the HVAC Mode, Fan Speed, Temperature, etc. match and also the gear shifter position.  It's a pretty big assumption that it's just mismatched CAN signals but considering all the devices in the CAN network are talking to each other (AC can be fully adjusted just with no info on screen) it might be a safe one.  I will report back WhatsApp Video 2025-02-26 at 12.49.10.mp4
    • Thanks for that Paul.  Do you think if I posted a picture you'd be able to remember where it went? 
    • Sorry Duncan, I didn't get a notification for the replies.  Thanks for responding!  It's a full Android device, but does allow you to use CarPlay/AA as well.  This is the one I bought from NaviRS on AliExpress: https://www.aliexpress.com/item/1005006368602668.html?spm=a2g0o.order_list.order_list_main.111.59aa1802JDzQ0E - the 2K 8G-256G CAM variant but it seems to have gone up by £170 since I bought it!  My purchase was £307.14.   It's not the fastest thing in the world but performs perfectly adequately.  It stays on standby unless I disconnect the battery and let it power down, then it's just a fairly standard Android bootup time from cold.  The DSP Equaliser is very nice and made the standard stereo system sound pretty decent compared to the stock screen.  Perhaps I can take a video of it when I get a sec. It *allegedly* supports the reverse camera, but I'm yet to get that working.  It has options for reverse cam (a camera unit can be bought separately) or 360 cameras (also bought separately).  To be fair it doesn't seem to detect that the shifter was put into reverse but I'm working on a theory about this as well.  At the moment I'm going without which is a bit annoying considering the car is an absolute canal barge but so far I haven't caused any damage I'll grab a picture of the wire I'm missing later today when I can get outside.  My theory, by the by, is that not only is the head unit different, but the CANBUS network has different signals for the different years.  I think this because I have a spare AC panel from a newer Infiniti G37 (as opposed to my Nissan panel) which wouldn't control anything except the volume when I had it wired up with the stock system.  I'm going to throw it back in and see if the screen will respond to it.  I've just ordered an arduino CANBUS module so I can have a look at the signals going around the car and see if I can spot anything.  I'm thinking if I can work out what it's expecting vs what it's getting I might be able to translate and relay the signal back but so far just a theory anyway. I also found this on my travels, so far the only one that specifically matches my car: https://www.aliexpress.com/item/1005002822934280.html?spm=a2g0s.imconversation.0.0.33433e5fgttovi If you look at the picture of the before, it has the card reader slot, and the picture of the head unit is exactly the same as the one pictured in my original post.  I asked if they sell the cables separately but sadly they won't.  I didn't want to just buy this one because it's a super old Android version and only dual core - likely slow as hell. 
    • As above, you did refill the coolant and burp the system before running it again didn't you?
    • To be fair - you see the same thing for every clutch. There's always someone making an installation error.
×
×
  • Create New...