tommis85

Thanks for the graph levinboy...looks like she slipped a bit on the dyno there?

That looks like a much steeper ramping up of power than what I've been seeing! ....and driving!!

Gees what on earth are you running!?

Would be interesting to see how she goes with a set of cams (I'm assuming you mean cams and not cam gears?) It would be good to see some more -9 graphs. Even GT-SS graphs are rare (was searching for these because of the lack of -9 graphs). As far as the 2860's go, -7's and -5's are common as

Ah ok man no worries

Thanks for the info guys...I take it that the graph posted up is a overlay of 7's and 9's or is it a overlay of before/after cam gears or something?

So there really isn't much difference at all between the -7's and -9's down low? Just weighing up all options before I spend another cent on something that I may not be happy with etc. Funny how people will always build something they actually don't want Yeh that's true Piggaz, they're not a stump puller but they DO come on very hard down low with the ceramics, especially with upgraded actuators....I was hoping to not throw toooooo much of this awesome response away with my turbo upgrade. I'm starting to think I'd rather my 350hp of awesome response and torque than the 400hp of pure lag where I have to stay in a lower gear just to keep with traffic.

Hey fellas, would anyone be able to compare exactly how the -7's and -9's are? What I know is that the -9's are meant to give a bit more up top which yes, I've already noticed thanks to an f load of lag Is it just that the -9's are shifted back in the rpm range with their slightly smaller compressor blades? Where abouts in the rpm range do the -7's actually pick up and when in the rpm range do they achieve say, 1 bar on an idealy tuned engine? I'm thinking that 16psi by 4000 is still too laggy for me. 90% of my driving is in the city, so in 60 zones and all of it is under 3000rpm. I'm not liking the fact that the -9's only work properly a whole 1000rpm above where I do 90% of my driving.

Haha lets hope not

Hey there, It won't be any of the piping you have there - I have the same piping and have never had issues with it. Besides, something like that would be a major fault and would have seen recalls However, here are some things it could be: - If you're running pod filters without a partition you could be sucking in too much hot air (I have those issues in summer with a bit of power loss) - Your AFMs may be giving up slowly and could become very noticeable when they get hot as with a lot of electronic gear, so you could test these. - You may have a sloppy or broken actuator on one of your turbos. If it the actuator goes or gets too soft then it's an INSTANT power loss and you will know about it. You can easily test these by reaching down there and pulling on the rod...or test with a pump/gauge etc - You could also be having fueling issues...ie dying pump, old fuel filter or dirty injectors. Do you have a service history to share? - You may also want to check ALL your vacuum lines for leaks....and while you're at it, all your pipework hoseclamps. When did all this start to happen? Has it always been like this or did it happen for the first time the other day?

Haha that should be quote of the day ;-) Well, that Penrite stuff I use rates quite high up there too....and from memory Penrite is in the top 3 of all the oils. But first the car needs to be going again haha ;-)

I may have to change over to this goodiness. Only reason I haven't yet is because it's expensive. I use the HPR 5 stuff but do regular 3000km changes.

Chris you better drive this car of yours a bit more more often if you're gonna be splurging on these expensive oils! Otherwise those too will just be sitting there. You do realise that by hardly driving the car you're doing a lot of damage to it when you do fire it up every now and then? You really should just give me your car so I can drive it ;-) Just saying

I'm definitely going for the next one to put it thru it's paces

Lol...would you do it for a drive in the GTR? Damn if only ma ride was ready...why is it that every time we have happy laps there's something with my car.....and then, when my car is fine sweet F A is happening

for shizzle my nizzle

Nah these buggers were brand new as of 2 weeks ago or so. I bought them with brand new turbos. The interesting thing is that with very little preload these guys will ramp up exponentially in where they crack etc. I'll only be needing 7-8mm of preload and I'll have my 18psi (or more, hence probably having to wind some of it off again) I guess it just comes down to exactly how the spring is loaded into the canister and what kind it is. It's obviously not loaded in their pre-compressed etc...for all that I know, it's just sitting in there which is why all of them require at least the standard 1.5-2mm worth of preload (ie, half the flapper shaft diameter) I reckon these will be alright...if I only end up needing like 8mm of preload for now and I have plenty of travel remaining I'll leave them as they are. I want to couple them with an EBC anyway where you want them to open a bit under target boost.

The full sticker reads like this, just FYI A 430819-367 100511 PF 1808392 It has that letter "A" infront of the first number, over to one side in italics.

Linkems, I just checked the actuators again and they crack at piss weak boost. I'm going to send off an email to the fella I bought them from and see if he as any reference material. Looks like yours are performing like they're meant to....they're 15lb units.

Yep those would be the same ones I have. I'll go double check the actuators now. I'll also test the gauge to make sure it's not fibbing. I suppose it is just a sticker. Some monkey out there is in charge of sticking them on and who knows how many he stuffs up Or, maybe I was sold a softer pair by someone who just stuck the 430819-367 sticker on.

You should try it with a footpump yourself.....I recommend the foot version because you can place it on your strut tower and then gradually pump it or stop halfway thru a pump to see what the actuators are doing. It's also an AWESOME way to get the tightened up rods on and off

Linkems, When I originally hooked it up it cracked at about 5psi and opened from there onwards to be fully open by around 10-12psi. I wound on about 10mm and it then proceeded to crack/budge at about 10-12psi then gradually open up from about 15psi onwards to be wide open at around 18psi. I think the 10mm is about enough to counter the actuator spring and also the exhaust gases pushing on the flapper...to make it open at around 15psi when driving as to not boost over 18psi. Obviously my footpump only simulated intake plenum pressure and not exhaust pressure etc etc. I haven't been able to check peak boost because I don't want to push it that high without tune. Today, in 3rd I got about 16psi by 4000rpm.....prior tests were only in 1st and 2nd around town where it got around 12psi max at 4000rpm. Today I was also going up slight hill in 80/100 zone. Hope all that helps a bit I'll probably be able to wind a bit of preload off again with the EBC provided the flapper stays shut long enough till EBC starts feeding a signal to the actuators.

Am quite motivated now...just came back from a drive that had a highway stretch in it where I loaded them up a bit in 3rd up a hill.....expected just the normal low boost but they instead ramped up to what would have been (I backed off) around 16psi at 4000 Can't wait to get it tuned so that she'll ramp up like that in the lower gears too!

Haha I reckon anything would look good on the graph right now....they tried to tune it with the wastegates flapping in the wind - dumbasses! I mean hell, what tuner does that? "Hmmm....turbos are laggy....lets not check for mechanical issues and crank up the boost instead" GRRRRRRRR!!!! Right now they'd have a graph that would similar to a GT30 except a bit fatter down low...just need to have the whole show shifted forwards by another 500rpm and then I'll be a happy chappy! So what are your plans Don? Do you have any graphs? Mine was so pathetic that I didn't take a copy....it's flat and gay and would just remind me of when I spent all that money for nothing

That's good that they're good in the twisties....I had a brief taste of how they come on before backing off (needs tune etc etc) and it looks quite promising.