Jump to content
SAU Community

Recommended Posts

hi everyone. im hoping someone could give me a hand please. ive pulled a homemade boost controller out of my series 2 stagea( on there when i got it) and now i want to return the boost lines back to thier correct homes. can anyone help. theres the solanoid with the top and bottom connection spots. theres the wastegate conection, the conection on the compressor housing on the turbo and then i found one sneaky one cable tied shut on the pipe that runs from near the pod filter back to the bov. can someone please lend me a hand. or a pic of thier engine bay with the factory setup :)

i was told by the people that did my 100,000km service that it was installed wrong so jsut want it out

Link to comment
https://www.sau.com.au/forums/topic/312625-hheeelllpp/
Share on other sites

hi everyone. im hoping someone could give me a hand please. ive pulled a homemade boost controller out of my series 2 stagea( on there when i got it) and now i want to return the boost lines back to thier correct homes. can anyone help. theres the solanoid with the top and bottom connection spots. theres the wastegate conection, the conection on the compressor housing on the turbo and then i found one sneaky one cable tied shut on the pipe that runs from near the pod filter back to the bov. can someone please lend me a hand. or a pic of thier engine bay with the factory setup :)

i was told by the people that did my 100,000km service that it was installed wrong so jsut want it out

doing this from memory, but here goes.

top pipe on the solenoid is pressure feed (it shouldn't matter, because i don't think it's a 1 way mechanism, but from memory, that's how it is). run a vac line from the intercooler piping, to this. bottom pipe on the solenoid, is connected to the t piece. the hose with the restrictor(s) in it, goes from the t piece to the blow off valve return pipe (it's under another pipe, have a look around for a nipple). the last hose, goes from the t piece to the wastegate.

just in case i'm wrong, be gentle on the car when you put everything like this. if your car really surges, something isn't wrong. your solenoid might not be getting power, in which case, your wastegate isn't getting pressure and your car is free-boosting. this is bad for your car and your turbo. if you have a boost gauge (all turbocharged cars should), you should be running no more than 7 psi in standard form. the series 2 stageas run a dual stage boost control, around 5psi up to about 4500 and then 7 psi from there on. it is not uncommon for the stock solenoid to be grounded (by a previous owner), however, which will give you 7 psi all the time.

i don't have a pic i'm sorry. if you have a search for the 10 minute boost mod, there should be some pictures somewhere :D

Link to comment
https://www.sau.com.au/forums/topic/312625-hheeelllpp/#findComment-5142244
Share on other sites

Nick's description is correct. While you're at it you may as well bypass the solenoid and get 10psi but you will need to find the restrictor in one of the lines and make sure it is in the bleed line (or else make one up from a weldind tip or by soldering up the bleed side of the T and drilling a hole in it. Pictures and instructions in post # 40

http://www.skylinesaustralia.com/forums/Ja....html&st=20

Link to comment
https://www.sau.com.au/forums/topic/312625-hheeelllpp/#findComment-5142380
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


  • Latest Posts

    • 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.
    • Hi,  Just joined the forum so I could share my "fix" of this problem. Might be of use to someone. Had the same hunting at idle issue on my V36 with VQ35HR engine after swapping the engine because the original one got overheated.  While changing the engine I made the mistake of cleaning the throttle bodies and tried all the tricks i could find to do a throttle relearn with no luck. Gave in and took it to a shop and they couldn't sort it. Then took it to my local Nissan dealership and they couldn't get it to idle properly. They said I'd need to replace the throttle bodies and the ecu probably costing more than the car is worth. So I had the idea of replacing the carbon I cleaned out with a thin layer of super glue and it's back to normal idle now. Bit rough but saved the car from the wreckers 🤣
    • After my last update, I went ahead with cleaning and restoring the entire fuel system. This included removing the tank and cleaning it with the Beyond Balistics solution, power washing it multiple times, drying it thoroughly, rinsing with IPA, drying again with heat gun and compressed air. Also, cleaning out the lines, fuel rail, and replacing the fuel pump with an OEM-style one. During the cleaning process, I replaced several hoses - including the breather hose on the fuel tank, which turned out to be the cause of the earlier fuel leak. This is what the old fuel filter looked like: Fuel tank before cleaning: Dirty Fuel Tank.mp4   Fuel tank after cleaning (some staining remains): Clean Fuel Tank.mp4 Both the OEM 270cc and new DeatschWerks 550cc injectors were cleaned professionally by a shop. Before reassembling everything, I tested the fuel flow by running the pump output into a container at the fuel filter location - flow looked good. I then fitted the new fuel filter and reassembled the rest of the system. Fuel Flow Test.mp4 Test 1 - 550cc injectors Ran the new fuel pump with its supplied diagonal strainer (different from OEM’s flat strainer) and my 550cc injectors using the same resized-injector map I had successfully used before. At first, it idled roughly and stalled when I applied throttle. Checked the spark plugs and found that they were fouled with carbon (likely from the earlier overly rich running when the injectors were clogged). After cleaning the plugs, the car started fine. However, it would only idle for 30–60 seconds before stalling, and while driving it would feel like a “fuel cut” after a few seconds - though it wouldn’t fully stall. Test 2 – Strainer swap Suspecting the diagonal strainer might not be reaching the tank bottom, I swapped it for the original flat strainer and filled the tank with ~45L of fuel. The issue persisted exactly the same. Test 3 – OEM injectors To eliminate tuning variables, I reinstalled the OEM 270cc injectors and reverted to the original map. Cleaned the spark plugs again just in-case. The stalling and “fuel cut” still remained.   At this stage, I suspect an intermittent power or connection fault at the fuel pump hanger, caused during the cleaning process. This has led me to look into getting Frenchy’s fuel hanger and replacing the unit entirely. TL;DR: Cleaned and restored the fuel system (tank, lines, rail, pump). Tested 550cc injectors with the same resized-injector map as before, but the car stalls at idle and experiences what feels like “fuel cut” after a few seconds of driving. Swapped back to OEM injectors with original map to rule out tuning, but the issue persists. Now suspecting an intermittent power or connection fault at the fuel pump hanger, possibly cause by the cleaning process.  
×
×
  • Create New...