So, Ive Got A Highflow

[DECIM8]

Hey guys,

I plan to drive to qld soon to pick up some parts and enjoy a small holiday, I have a highflow I recently bought and wanted to bolt it on before I head up.

I currently have about 210rwkw with stock injectors, turbo and pump If I bolted on the highflow with the current fueling system and continued to run at the 11-13psi that my stocker runs at would it be just the same on the fuel system and not make the car run lean? I assume it would be the same as its same psi?

Currently the car has a nice smoke covered ass which obviously means its running slightly rich at some stage, mostly when I boot it and on idle Id say from the smell of the exhaust and smoke during booting. I would most likely get it on a dyno to check too but no point unless you guys give me some tips first

I just wanted to ask before I went as QLD, is where im heading and its not a short drive.

Edited March 31, 2008 by DECIM8

[ZENNON]

if going on a long journey soon maybe better just to wait...

having said that i think it should be fine if you take it easy (till you get it tuned anyway - ps what ECU?)

[abu]

It will be fine but due to the extra flow of the high flow over the standard turbo the tune will be slightly leaner than it was with the stock turbo

I advise you drop the boost down to about 8psi or under instead of the 11 - 13psi your running just to be safe

Other than that its all good just as long as you don't thrash its head off as you can't guarantee that the AFR is at a safe level

[evil_weevil]

do you have a z32 AFM?

Id wait till you get back, fit them and retune

Id also look at doing injectors and fuel pump as they wont be able to cope for long mate

[TTT]

11-13 psi on stock turbo does NOT equal same "AIRFLOW" as 11-13psi on hiflow turbo.

Boost pressure does NOT equal same amount of air flow.

if you MUST use the hiflow, just run it off the wastegate spring setting (5 psi or whatever it is).

but then it would be laggy as shit.

[BLK33T]

^^ unless the engine magically became more efficient by adding a high flow the air flow at the same boost pressure would be equal wouldn't it?

Boost is a byproduct of how much air an engine can flow true? if everything else is the same the engine will only be able to flow the same ammount of air at a given amount of boost ... flame me if I'm wrong

In saying that however just leave the stock one on until you get back

Edited April 1, 2008 by BLK33T

[ZENNON]

11-13 psi on stock turbo does NOT equal same "AIRFLOW" as 11-13psi on hiflow turbo.

Boost pressure does NOT equal same amount of air flow.

yeah i had to explain that to my dad the other night lol

i was like:

imagine you have a container with 2 small holes air coming in the one side and out the other side and pressure in room is X

now if you make both holes larger you can still have the same pressure of X but it will flow more air

[DRD-00F]

People forget the little i on the end of psi...

[DECIM8]

Right I see, Well the catch is the stock turbo will be swapped out when I get there for another turbo. So i felt strapping a highflow on and driving up would save the extra effort to remove it.

My current ecu is a Safc piggy back perhaps strap it on run 10 psi or less and drive up there not like im trying to win a race to get there, although that would be a nice run (save some time too)

Oh and dyno it to confirm its not leaning out

[ZENNON]

People forget the little i on the end of psi...

huh? inch?

[666DAN]

yeah i had to explain that to my dad the other night lol

i was like:

imagine you have a container with 2 small holes air coming in the one side and out the other side and pressure in room is X

now if you make both holes larger you can still have the same pressure of X but it will flow more air

I never like that analogy, as the engine is a closed system when the pressure is building up against the intake side...it's just the exhaust gas gets out quicker on the higher flowing part. If it was an open system like a jet-engine it would make sense

[ZENNON]

I never like that analogy, as the engine is a closed system when the pressure is building up against the intake side...it's just the exhaust gas gets out quicker on the higher flowing part. If it was an open system like a jet-engine it would make sense

well air comes in the front (air filter) and out the back (exhaust) but yeah...

i just used analogy with dad so he could see the two are not the same

[DECIM8]

Also, what is the diff if I run a Stock AFM or a Z32? Its obviously better at monitoring air but with a safc wont help to much.

Obviously this will change, oh if anyone is after a Safc Neo one will be up for sale from me after i get the PFC

Edited April 1, 2008 by DECIM8

[ZENNON]

Also, what is the diff if I run a Stock AFM or a Z32? Its obviously better at monitoring air but with a safc wont help to much.

Obviously this will change, oh if anyone is after a Safc Neo one will be up for sale from me after i get the safc

problem is if you flow LOTS of air stock AFM will max out - Z32 have bigger range...

ps im consfussed your selling SAFC Neo and Getting an SAFC?? As in a SAFC1???????

[DECIM8]

Woops, My bad I meant Power FC

[evil_weevil]

yeah maxes out and cant read much after a certain reading. "can" cause issues.

e.g.

I had my high flow turbo fitted with standard AFM. I was told to keep boost down because of the AFM maxing out. On the powerFC I wasnt spose to go over 5000 with the air volume read out (forget the correct term?) cause if I did, and if boost spiked a bit, good bye motor.

Got the z32AFM on, now it cannt got over 5000 - most I have had on the track with air flow was like 4600

much safer

Hope that kinda explains why, id it doesnt, I fail!

[TTT]

I'm waiting for RB2530 to post here about his ecu/afm adventures.

always causes arguements and entertainment with the Z32/PFC crowd.

[DECIM8]

Righto seems to explain it! Thank you very much Guess I wont be travelling up there with the highflow on..

Cheers

[BLK33T]

forget the high flow go one of these instead Hectic !!!!!

[NYTSKY]

If you need to put the turbo on before you go, dont boost the car.You can drive it,but i wouldnt boost it.2-3psi will be fine but no more.