Jump to content
SAU Community

Recommended Posts

has anyone got a mechanical boost gauge connected and if so where did u run the nylon hose thruogh the firewall and where is it connected to in the engine bay? and where have u mounted it in the cabin??

any pics would be appreciated

thanks Brad B)

Link to comment
https://www.sau.com.au/forums/topic/99758-boost-gauge-connection/
Share on other sites

On mine, the vacuum hose is connected to the rear of the plenum, there is an unused fittingthere that is the right size. The vacuum hose then goes out of the engine bay to the RHS guard, accross the rubber door seal and up the A pillar where the boost guage is located in a POD.

:starwars: cheers :)

So... If I want to use that one for my guage, can I remove the stock connection and use the nipple? That pipe on the Skylines just goes to the ECU somehow, right? It's not going directly to the guage on the dash? Cheers!

There is an unused nipple at the back of the plenum, take the rubber cap off it, connect the vac hose to it.

Run the vac hose past the firewall somehow, i used the big gromment next to the ABS, then run the vac hose to the guage.

Mount where desired, enjoy the b00st :D

So... If I want to use that one for my guage, can I remove the stock connection and use the nipple? That pipe on the Skylines just goes to the ECU somehow, right? It's not going directly to the guage on the dash? Cheers!

It certainly doesn't go to the gauge in my R34 skyline (or S2 stagea) as the ECU knows the boost (which is why it comes up on my laptop as well as the central gauge..) and goes to the gauge in a wire :-)

Ian

Thanks, Ian! A mate told me the same thing, but I'm curious as to why I don't see any boost reading in any consult software that I try. I would also like to use that pipe to go directly to a boost guage that i'm fitting, rather than tap off something else.

The only real pipe I can see goes to the MAP sensor, I think. (it's tiny)

Thanks, Ian! A mate told me the same thing, but I'm curious as to why I don't see any boost reading in any consult software that I try.

Most of the consult software out there is crap, written in VB by amateurs.. :P Mine will be out in a month or so (pm me your real email address and I'll send you a copy to test if you'd like) and includes everything you can get out of the port, not to mention real time graphing and 'replay' ability etc.. Written all in C++ :)

The only reason I've written it is that I've seen how bad the ones out there are...

And I guarantee the turbo boost IS coming out of my R34 consult port, as I have had it up on my screen many times while I've been testing my software!

:(

Ian

Most of the consult software out there is crap, written in VB by amateurs.. :P Mine will be out in a month or so (pm me your real email address and I'll send you a copy to test if you'd like) and includes everything you can get out of the port, not to mention real time graphing and 'replay' ability etc.. Written all in C++ :)

The only reason I've written it is that I've seen how bad the ones out there are...

And I guarantee the turbo boost IS coming out of my R34 consult port, as I have had  it up on my screen many times while I've been testing my software!

:(

Ian

Hi Ian, there is no MAP sensor on my Stagea S1, the ECU has no way of knowing the boost level. I will be very interested in having a look at your Consult software when it is available.

;) cheers :spank:

Edited by Sydneykid

Ah! Thanks Ian and SK! That answers my question. The unused nozzle on the back of the manifold on a Stagea is what the Skyline uses to go to the MAP sensor.

Ian, PM sent... i'd love to monitor my boost digitally! =-]

  • 2 weeks later...
  • 2 weeks later...
Hi Ian, there is no MAP sensor on my Stagea S1, the ECU has no way of knowing the boost level.  I will be very interested in having a look at your Consult software when it is available.

;) cheers :rofl:

Yep, as per usua,l you are correct - tried it on a series 1 stage today and the things it could get were -

Live Register,Description

X00,RPM

X01,RPM part2

X04,Airflow

X05,Airflow part2

X08,Water Temp

X09,O2

X0b,Speed km/h

X0c,Battery

X0d,Throttle

X12,Exhaust Temp

X13,Bit_Reg1

X14,Injection Time

X15,Injection Time part2

X16,Timing (degree BTDC)

X17,Idle Air Valve %

X1a,AF Alpha %

X1c,AF Alpha Learn %

X1e,Bit_Reg2

X1f,Bit_Reg3

X21,Lean

Finished.,Version 1.10

Where as the series 2 can get -

Live Register,Description

X00,RPM

X01,RPM part2

X04,Airflow

X05,Airflow part2

X08,Water Temp

X09,O2

X0b,Speed km/h

X0c,Battery

X0d,Throttle

X13,Bit_Reg1

X14,Injection Time

X15,Injection Time part2

X16,Timing (degree BTDC)

X17,Idle Air Valve %

X1a,AF Alpha %

X1c,AF Alpha Learn %

X1e,Bit_Reg2

X1f,Bit_Reg3

X21,Lean

X26,Tank Temp

X29,Turbo Boost

X3b,Unkown_X3B

X3d,Unkown_X3D

X3f,Unkown_X3F

X40,Unkown_X40

X43,Unkown_X43

X44,Unkown_X44

X45,Unkown_X45

X46,Unkown_X46

X62,Unkown_X62

X63,Unkown_X63

Finished.,Version 1.05

ie includes the turbo boost, and a stack of other things that we don't know what they are (I'm hoping one is front/rear torque split :P

Ian

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

    • Surely somebody has one in VIC. Have you asked at any shops?  Is this the yearly inspection or did you get a canary?
    • This is where I share pain with you, @Duncan. The move to change so many cooling system pieces to plastic is a killer! Plastic end tanks and a few plastic hose flanges on my car's fail after so little time.  Curious about the need for a bigger rad, is that just for long sessions in the summer or because the car generally needs more cooling?
    • So, that is it! It is a pretty expensive process with the ATF costing 50-100 per 5 litres, and a mechanic will probably charge plenty because they don't want to do it. Still, considering how dirty my fluid was at 120,000klm I think it would be worth doing more like every 80,000 to keep the trans happy, they are very expensive to replace. The job is not that hard if you have the specialist tools so you can save a bit of money and do it yourself!
    • OK, onto filling. So I don't really have any pics, but will describe the process as best I can. The USDM workshop manual also covers it from TM-285 onwards. First, make sure the drain plug (17mm) is snug. Not too tight yet because it is coming off again. Note it does have a copper washer that you could replace or anneal (heat up with a blow torch) to seal nicely. Remove the fill plug, which has an inhex (I think it was 6mm but didn't check). Then, screw in the fill fitting, making sure it has a suitable o-ring (mine came without but I think it is meant to be supplied). It is important that you only screw it in hand tight. I didn't get a good pic of it, but the fill plug leads to a tube about 70mm long inside the transmission. This sets the factory level for fluid in the trans (above the join line for the pan!) and will take about 3l to fill. You then need to connect your fluid pump to the fitting via a hose, and pump in whatever amount of fluid you removed (maybe 3 litres, in my case 7 litres). If you put in more than 3l, it will spill out when you remove the fitting, so do quickly and with a drain pan underneath. Once you have pumped in the required amount of clean ATF, you start the engine and run it for 3 minutes to let the fluid circulate. Don't run it longer and if possible check the fluid temp is under 40oC (Ecutek shows Auto Trans Fluid temp now, or you could use an infrared temp gun on the bottom of the pan). The manual stresses the bit about fluid temperature because it expands when hot an might result in an underfil. So from here, the factory manual says to do the "spill and fill" again, and I did. That is, put an oil pan under the drain plug and undo it with a 17mm spanner, then watch your expensive fluid fall back out again, you should get about 3 litres.  Then, put the drain plug back in, pump 3 litres back in through the fill plug with the fitting and pump, disconnect the fill fitting and replace the fill plug, start the car and run for another 3 minutes (making sure the temp is still under 40oC). The manual then asks for a 3rd "spill and fill" just like above. I also did that and so had put 13l in by now.  This time they want you to keep the engine running and run the transmission through R and D (I hope the wheels are still off the ground!) for a while, and allow the trans temp to get to 40oC, then engine off. Finally, back under the car and undo the fill plug to let the overfill drain out; it will stop running when fluid is at the top of the levelling tube. According to the factory, that is job done! Post that, I reconnected the fill fitting and pumped in an extra 0.5l. AMS says 1.5l overfill is safe, but I started with less to see how it goes, I will add another 1.0 litres later if I'm still not happy with the hot shifts.
    • OK, so regardless of whether you did Step 1 - Spill Step 2 - Trans pan removal Step 3 - TCM removal we are on to the clean and refill. First, have a good look at the oil pan. While you might see dirty oil and some carbony build up (I did), what you don't want to see is any metal particles on the magnets, or sparkles in the oil (thankfully not). Give it all a good clean, particularly the magnets, and put the new gasket on if you have one (or, just cross your fingers) Replacement of the Valve body (if you removed it) is the "reverse of assembly". Thread the electrical socket back up through the trans case, hold the valve body up and put in the bolts you removed, with the correct lengths in the correct locations Torque for the bolts in 8Nm only so I hope you have that torque wrench handy (it feels really loose). Plug the output speed sensor back in and clip the wiring into the 2 clips, replace the spring clip on the TCM socket and plug it back into the car loom. For the pan, the workshop manual states the following order: Again, the torque is 8Nm only.
×
×
  • Create New...