borngeek wrote:Comparing it to commodore drivers pulling out the headlights is a bit harsh mate. Keep it above the belt OK
Fair dinkum...he'll be having a crack at the Chev badge on me Triton next..
borngeek wrote:Comparing it to commodore drivers pulling out the headlights is a bit harsh mate. Keep it above the belt OK
borngeek wrote:reeldreamer wrote:I have done this wastegate arm modification and just installed the scangauge and the boost is 14.7psi. I really don't believe it made any difference at all. I will set in back to the previous position to see if it makes any change to the boost. I think if your chasing extra boost just install a bleed valve and be done with it. I can't argue with the EGR blanking plate but the wastegate mod is a backyard modification worth avoiding. Its like these guys who pull their front headlight out of their crappy commonwhores to get cold air induction......Waste of time!
Mitch
Thats a bit of a big call there Mitch.
It DEFINATELY increases your boost.. Try it with your scanguage at both settings and I am 100% positive you will see the data that shows the difference in psi..
Whether your bum in seat experience is dissapointing or not to you is par for course.
This is a cheap mod/trick without putting in a bleed valve. (boost controller)
Anyway if you dont have a chipIT (with MAP installed) the engine will limp at 17psi anyway.. So this is a easy and cheap way to get from 14.5psi (std) to around 16psi or more if you take out the locknut..
Comparing it to commodore drivers pulling out the headlights is a bit harsh mate. Keep it above the belt OK
GLX-R Alex wrote:With this mod i can get to a max of 16.8psi
reeldreamer wrote:Interestingly since have had both intake manifolds changed I have seen the boost increase from around 14.7 to just on 16psi! I stand corrected re the adjustment as obviously my manifolds were creating a boost loss. I guess a valuable indicator of the state of your manifolds if you adjust the arm and the boost doesn't reach 16psi and above you have a problem!
Mitch
touchit wrote:reeldreamer wrote:Interestingly since have had both intake manifolds changed I have seen the boost increase from around 14.7 to just on 16psi! I stand corrected re the adjustment as obviously my manifolds were creating a boost loss. I guess a valuable indicator of the state of your manifolds if you adjust the arm and the boost doesn't reach 16psi and above you have a problem!
Mitch
sorry for my dumbness, how could your manifolds lose boost unless the gaskets were leaking ??
Longranger1 wrote:I am pretty sure that the VGTurbo on the MN HP2.5s has its boost controlled by the variable geometry vanes rather than a wastegate set up. The actuator looks like a wastregate dashpot but it really alters the vane settings. I stand corrected if I am wrong so perhaps someone could explain the VGT set up a bit better.
I don't think I'll be messing with mine!
gauci204 wrote:managed to get this done without dropping the pin. there is always a first time for everytyihng.
how can i tell if i have the newer manifold? i bought this second hand and have no idea if it has had the manifold replaced.
cheers
chris
coxy47 wrote:EDIT: Reading that your in South Africa sinwolf i could be wrong. I seem to remember there was a 2.5 engine with a mechanically actuated waste gate on the L200's? Or im probably completely wrong and talking out of my ass.
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