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Stock Boost

ICER33

By ICER33,
in Engines & Forced Induction

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ICER33 Community Regular

ICER33

Posted
Posted

hey i was talking to this guy and he was positive that his car was running 10 psi. now his car is completely stock, i mean he has an aftermarket muffler and a boost gauge. his gauge reads 10 but i cant see that it has been boosted by any method and it sure doesnt drive like it run 10psi.

anyway i said that stock boost is 7 to 8 psi depending. this is right yeah?

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  • 4 weeks later...
superspit Mentor

superspit

Posted
Posted (edited)
he got bleed valve or seomething?

one of those turbo smart ones

You can get extra boost by doing as I've done.

...and yes......7-8 psi is about standard on a R33 GTST (RB25DET).

Small hole drilled into the wastegate rubber hose. (directly before WG).

Innitially, it's hit and miss.

I made up 5 small lenghts of pipe with holes of various sizes. (.5 to 1.5mm), till I found the right one, (i carried them in the glovebox for easy change over).

Making constant 12-13psi (measured) for the past year now.

I had the GFB bleeder valve, ....cops pulled it out for me.

The hole in the W/G pipe is undectable!! (and also has the same effect as the $80 GFB!!!)

I re-gapped the plugs to .8mm at the same time.....could never bo back to std boost now!!

Also have been running the 'black wire' mod too, on the solenoid (also undectable), so boost cuts in earlier. Works great, that mod!! (search the forumn, but make sure you earth the right wire!!!).

All this works for me, and the car makes a conservative and safe no- bullshit 174RWkw....not bad for standard...thanx to these forumns!!!!

Mark.

Edited by superspit
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QRI05E Mentor

QRI05E

Posted
Posted (edited)

Hey mark.. when you say standard, how standard??

cause i have read that R33's run about 140rwkw stock (7psi).. im just curious (QRI05E) if ONLY 5 psi of extra boost have given you 35rwkw?? or you have a 3" exhaust and pod aswell???

Oh yes, and to help answer the topic question... i have seen R33 GTSt's fitted with an R32 GTSt WG acutator which are set to 10psi from factory therefore no bleed valve required!!! maybe your friends R33 has one fitted??

Regards,

Sarkis

Edited by QRI05E
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7yphon Experienced

7yphon

Posted
Posted (edited)

Well there is such a thing called Boost creep, From Small mods like Exhaust and pods, When I got my car in with exhaust and pod the boost gauge was running around 12psi, I got told from a good source that mild mods that you would norm wouldnt think anything about can cause boost creep. So that could also explain about your friends R33

Edited by 7yphon
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superspit Mentor

superspit

Posted
Posted
Hey mark.. when you say standard, how standard??

cause i have read that R33's run about 140rwkw stock (7psi).. im just curious (QRI05E) if ONLY 5 psi of extra boost have given you 35rwkw?? or you have a 3" exhaust and pod aswell???

Oh yes, and to help answer the topic question... i have seen R33 GTSt's fitted with an R32 GTSt WG acutator which are set to 10psi from factory therefore no bleed valve required!!! maybe your friends R33 has one fitted??

Regards,

Sarkis

Hi QR,

I don't know the standard specific power output at wheels of 33GTST, your numbers seems ok. By standard all I mean is there are no internal/turbo/ECU changes to my car.

3 inch zorst and old foam Airinx pod (as per my Avitar description) is what I've got. So I guess that 'in-combination' with these 'shallow' and basic mods, I would be making the extra Rkw.

By the way QR, I can actually put my car back to 'stock' within a couple of hours and feel a dramatic difference. (much slower on take off, which is all I'm interested in by the way!!!)

Picture is of my 'bleeder valve' prior to Police kindly removing it for me!!

Hole in the WG pipe works just the same, (says a lot for these devices!!$$$$$)

ps .I don't think the R32 actuator you mention relates to me??

Thanx mate!!

Mark.

post-9261-1129622908.jpg

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted
Well there is such a thing called Boost creep, From Small mods like Exhaust and pods, When I got my car in with exhaust and pod the boost gauge was running around 12psi, I got told from a good source that mild mods that you would norm wouldnt think anything about can cause boost creep. So that could also explain about your friends R33

12psi on a 33-t with nothing more than an exhaust and a pod?

:D:D

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