Boost Question On R33-gts25t

[teng]

okok i have a weird problem that's being going on since i got the car. From memory, the boost on a gts-t is two step, 5psi at 4500 and 7psi til 7000rpm. Now why is that the boost on my boost meter never reaches 0.5? I have a blitz electronic boost gauge connected so it should read an accurate reading.

Any suggestions?

Edited June 28, 2008 by teng

[boostin_r33]

dude what do you mean?

[teng]

Ok the initial post was crap. Wrote that while i just woke up. lol

The question is, looking at the boost meter, a stock gts-t should be able to reach 5bar with no problems right?

If it's only stuck at 4bar all the time no matter if you rev til redline, what could be the problem?

I checked all my lines and they are intact with no leaks. Could the actuator f**k the boost?

Edited June 28, 2008 by teng

[(B1) MR_fanny]

4 bars? that means your running 58psi.

do you mean 0.4 bars = 5.8psi....what does your stock one read?

maybe unplug your soleniod and take it for a spin. if it feels the same then it might be your solenoid. if its slower then it may be your boost guage thats not reading right. just a suggestion.

[teng]

yup, my mistake. it's 0.4bars all the way. i installed an aftermarket blitz boost gauge so it gotta be the right reading. Solenoid as in the one near the power steering reservoir?

[(B1) MR_fanny]

solenoid as in your boost solenoid to make it run 5psi only. this is to see if either its a boost problem or your boost guage. and when i mean disconnect i mean unplug it electrically not the vaccum hoses themselves.

[teng]

okok i'll give it a go 1st thing in the morning. thanks.

[teng]

ok took it for a spin just now without the solenoid connected and ran 0.4bar all the way til 6000rpm. It was the same with the solenoid connected, also 0.4bar. Guess solenoid is ok. If it was f**ked up, it sould only show 0.3bar.

Edited June 29, 2008 by teng

[(B1) MR_fanny]

the question now is did the car feel the same before and after or is the guage just reading the same before and after? if it felt the same then it might be a boost/solenoid thing but if it felt slower dis-connected then its probably the guage. does your stock guage say different.

is the guage new? i dont know the diff in connection between an electronic one and a mechanical one. you might want to check if the hoses for the guage arent pinched or leaking anywhere.

[teng]

All hoses are new HKS silicon ones. The stock gauge reads the same as the electronic blizt one which i connected myself. The car felt the same with or without the boost solenoid connected. lol

Boost is strong at 0.4 bar though. Felt like an airplane taking off.

Electronic boost gauge has an additional sensor to connect the vac hose from the fuel pressure regulator hence i don't have to run the hose very long while else the mechanical boost gauge needs a very long hose from the fuel pressure regulator to the gauge iteslf. That's the only difference. According to shops, the electronic gauge is more accurate than the mechanical ones cause of the additional sensor included in the package.

Edited June 29, 2008 by teng

[Godzilla32]

Im pretty sure the stock boost control solinoid in an R33 is only used for emergency boost control. It doesnt normally control boost

[(B1) MR_fanny]

interesting....all i know when i had mine if its d/c then it runs 5psi and the feeling is noticable. I have done the earthing mod and can tell the difference from 5psi to 7psi whilst driving and switching it on and off via a switch in cabin.

I also wired the solenoid up to a water spray kit so when it turns on after 4500rpm it automatically sprays. so i assumed its on and controling boost rather than working only when the car overboosts.

now im doubting myself...ha. maybe someone else can shed some light.