Problem With Boost In My 32

[TiNTiN]

im haivnig problems with boost in my 32 im not sure whats the problem is

in my first gear boost doesnt seem to hit (or very little) when i rev past over 3000

and then in second gear it only seems to go up to 4 psi even wen i pass 4500 revs

but in 3 and 4 it boosts up to the normal 7 psi

i dont understand why ?

i got a r32 gts-t 1992 it was originally an auto car converted into a manual

the cars got about 150,000 km on it.

is the turbo going out ? or is there anohter problem ?

[TiNTiN]

anybody experience this problem ?

[black_32]

has this happened only now that uve converted it to man or just happened recently

[Cubes]

Lack of boost is sometimes caused by a blocked/stuffed cat convertor, either that or you have an intercooler/pipe leak.

[r33GTS-t-200kw]

possibly a leaking exhaust manifold gasket or cracked manifold... but I'd say you would hear that... no ticking noises are there?

[TiNTiN]

not sure how can it be a leak when it can hold boost when im in 3rd and 4th gear

and i bought the car with a auto to manual conversion already.

no i dont hear any ticking noises

except for this weird one wen i got over 100 km i can hear a ticking noise

[R31 POWER]

What ecu does it have in it.Manual and auto ecus ARE different.

[TiNTiN]

What ecu does it have in it.Manual and auto ecus ARE different.

not sure oh i forgot what he told me before i bought the car ages ago been driving it for like a year now... should be a manual ecu... but not to sure

90% sure its manual ecu

[B0oStEr]

not sure how can it be a leak when it can hold boost when im in 3rd and 4th gear

and i bought the car with a auto to manual conversion already.

no i dont hear any ticking noises

except for this weird one wen i got over 100 km i can hear a ticking noise

When I bought my R32 it had a 108kph+ speed alert ding dong thing that could only manage a ticking sound after I wore it out on the freeway.

Just a thought.

[sproosy]

im haivnig problems with boost in my 32 im not sure whats the problem is

in my first gear boost doesnt seem to hit (or very little) when i rev past over 3000

and then in second gear it only seems to go up to 4 psi even wen i pass 4500 revs

but in 3 and 4 it boosts up to the normal 7 psi  

i dont understand why ?

i got a r32 gts-t 1992 it was originally an auto car converted into a manual

the cars got about 150,000 km on it.

is the turbo going out ? or is there anohter problem ?

I thought RB20's ran 10PSI stock. Unless you have a different turbo or a BC?

[TTT]

are you working off the stock boost gauge or an aftermarket one.

cause the stock one doesn't read PSI.

just a thought.

you still didn't answer if this has always happened since you bought the car or recently.

if this only just started hapening now, have you made any recent changes?

[Cubes]

My stock r32 (exhaust and all) ran 9psi.

The exhaust bumped it up to 10.9psi, some manage 12psi with an exhaust, it depends on how well flowing the exhaust is. My dump pipe is crap.

[ZILR-34]

very true 'Cubes' as soon as i put my exhaust system on the boost jumped to 10-11 psi. for the other question about not hitting boost well my best guess is that u might have a leak in ur intercooler pipes, check them all and check the standard bov it might be leaking.

[TimmyC]

how does putting an exhuast on a car increase its boost ?

If you dont have a boost controller eg. AVCR wouldn't boost still be controlled by the wastegate ?

what is the stock boost on a 32gtst anyway ?, some say 7 some say 10. Im getting an AVCR soon and i want to know what is safe to run. I was thinking 12 psi....

[R31Nismoid]

it makes it rise due to less backpressure.

the enemy of a turbo car is backpressure in the exhaust.

having one free flowing gives good gains in many areas

as for manual/auto ECU, that wont make much of a difference

[TimmyC]

oh ok... so what is backpressure ? why is it bad ? and how does it change the spring tension of your wastegate ?

[SkyGTRline]

i have a similar problem...

standard my car ran 11psi with a Autometer boost guage...

I noticed that same prob, when boost kicks 2500-3000rpm it feels as if its loosing it, and at about 5k its comes back.. didnt register on the boost guage but..

Hooked up a Turbosmart dual stage boost controller.. and it does the same thing but worse.. 90% of the time it does it... sometime it works and hammers..

Im thinking it has somehting to do with the fuel cut as im running 13-14psi boost...

Bu then again.. it was doin it before i strapped the boost controller..

R32 gts-t run 10-11psi stock

My car was also converted to manual from auto... but didnt have the problem after the conversion..

[R31Nismoid]

it doesnt change the spring.

my understanding is (without even bothing to be technical)

By not leting the gas out freely, the turbine cant spin as freely.

If the rear is going no good, the compressor isnt going to go any better either.

So you make the rear work, and the front follows suit and the whole circle goes a lot nicer

[Cubes]

To find the true wastegate actuators preset drop the exhaust and see what boost you make.

[sproosy]

To find the true wastegate actuators preset drop the exhaust and see what boost you make.

^ :werd: