Is a VF22 really an upgrade from a VF23?

[ODB]

at the end of the day vf22 is always going to see bigger number if you max it out than the vf23 will.

however the 23 will have greater driveability imo.

Horses for courses.

[Guest S T E Y E]

hahaha id be keen to lign a vf22 wrx up at the lights with my vf23...mine would own a vf22 off the mark....on open road in 5th gear with my front mount all chiller as cold i get 14psi at bout 3700 maybe 3800

[Guest]

You sure its not better than that ?

[Guest S T E Y E]

beter than 3700??? ive got huge long intercooler pipes lol

[Optical]

sounds like something wrong with your setup. Probably related to your drilled out boost tap and double wastegates

a vf23 should hit 1 bar around 3300rpm even with a fmic

[Koom]

 S T E Y E said:

beter than 3700??? ive got huge long intercooler pipes lol

The length of pipes doesn't make a difference 5th gear, low rpm, full throttle applications as there is going to be alot more time to pressurize the pipework cause it's not going to take off through the rev-range as quickly as if you were in 3rd gear (for example).

[sultan]

yeah even my vf30 with front mount was slightly better than that in every gear

[Guest S T E Y E]

im not running the tap anymore....trying to flick it for some cash haha....it does come on eaelier i guess but not the wastegate open fully...wat i mean is i get full boost before 3700 but the gate opens at around 3700

[sultan]

that doesn't make sense. "full boost" is when the wastegate is fully open

[Guest S T E Y E]

um no...u can reach full boost in 5th without the gate open...specially if u start at 2800 rpm and floor it and let boost build....then gate opens wen there is excess boost being made....god people on this forum are quite up them selfs aye.....

[Optical]

so when you said this:

 S T E Y E said:

on open road in 5th gear with my front mount all chiller as cold i get 14psi at bout 3700 maybe 3800

were you telling the truth?

[sultan]

 S T E Y E said:

um no...u can reach full boost in 5th without the gate open...specially if u start at 2800 rpm and floor it and let boost build....then gate opens wen there is excess boost being made....god people on this forum are quite up them selfs aye.....

if you've hit your "full boost" set by boost control, it will be letting through excess pressure to the wastegate spring/actuator and therefore start to open. but it may not be going whaaaaaaaaaaaa because i assume you have an external that is atmo vented. but it will be open. you're just making bugger all power therefore bugger all exhaust gas, so it doesn't make the noise fiasco.

the period of which the engine is at its equilibrium for spooling the turbo is very small when talking about very low boost levels such as 1bar.

[Guest]

I think he is now just running a 12psi spring in his external

[Guest S T E Y E]

 sultan']

[quote name='S T E Y E said:

um no...u can reach full boost in 5th without the gate open...specially if u start at 2800 rpm and floor it and let boost build....then gate opens wen there is excess boost being made....god people on this forum are quite up them selfs aye.....

/quote]

if you've hit your "full boost" set by boost control, it will be letting through excess pressure to the wastegate spring/actuator and therefore start to open. but it may not be going whaaaaaaaaaaaa because i assume you have an external that is atmo vented. but it will be open. you're just making bugger all power therefore bugger all exhaust gas, so it doesn't make the noise fiasco.

the period of which the engine is at its equilibrium for spooling the turbo is very small when talking about very low boost levels such as 1bar.

yes this guy explains things alot better than me....hard to type on this little keyboard lol....i am running a 12 psi spring but i see about 12 to 14psi as i get more psi in higher gears more load etc

[Guest S T E Y E]

since i finally got the car on open road i did notice the vf23 is alot better in 1st 2nd but the 22 had alot more balls in top of 3rd going to 4th and pulling 4th

[stira]

Vf23 will boost earlier but run out of puff sooner. Depends how you drive and what you like your car to go like.