RB25 Stock Boost Level

[Ronin 09]

I tried searching, but found nothing specific.

My car is a '95 R33 GTS-t with:

I have a full system exhaust from dump back 3" to 4" post cat, and a air pod. Took the car out for a spin tonight (real cold in melb, like 5 degrees) and my boost gauge read just under 1 bar. Everything else is stock.

Isn't that a bit high? thats close to 14psi without bleed etc etc.

What else do your cars read, and is this safe?

[Miss*33]

Sounds a bit odd if you have no bleed valve or anything....

Mine has same mods as yours and reads nothing near that much...I'd be lucky if mine runs 0.5 bar, judging by the electronic boost controller anyway! Don't know how accurate they are...

[Revhead]

According to my guage, when bone stock I was running 6.5psi off the cam timing, and 8psi on. With the exhaust, this changed to 7psi off, and still 8psi on. Even with a wastegate bleed, mine never goes above 12psi in really cold weather (I've set it to 11psi for 'normal' weather).

14psi sounds wierd. I'd be checking for damaged/partially blocked wastegate lines, or possibly an iffy wastegate actuator.

[Cake]

Ronin 09

that seems a bit high...

mine has stock front/dump pipe, special cat, 95mm catback and airpod.

on the coldest night ive driven the car hard, mine sits at 0.5bar below 4500rpm, then the 2 stage stock boost control raised it to 0.75bar (10.9psi) above 4500rpm.

usually though it will sit at 0.5bar and then goto about 0.6bar or a bit more.

have you tried seeing how high it boosts now after that night? if its still doing it i'd get it checked out, because it's probably not good to run ~1bar with stock cooler especially.

[Ronin 09]

problem is its still bloody cold in melb! i will have a better look tomorrow, and if so get it on a dyno to check out the actual measured pressure... maybe the gauge is off. It should be pretty reliable though - it is a Trust gauge; even if it is off it shouldn't be off by 0.2bar!