Jump to content
SAU Community

Recommended Posts

A guy with PT5558 on R34 neo made 372rwkw @26psi, the only difference- he had e85, top mount ex manifold and ffp. Mick O made 335kw on stock manifold btw...

^^

In this case the OP6 high flow made more power on less boobst :P

Like mentioned earlier, higher octane fuel will allow you to run timing that is closer to the optimum degree.

Or you can also enlarge the exhaust side turbine wheel that has similar effect to an larger rear housing. This case a larger housing would be the cheaper way to get more power.

What I was tryin to say is I dont think the turbo is a limitation itself since 372kw and 360kw was made with the same turbo on a neo and an sr (both e85) respectively, as posted by the guy above. And mick O did 335kw on stock mani, so have many others gone over 300 on stock mani. Just my opinion

What I was tryin to say is I dont think the turbo is a limitation itself since 372kw and 360kw was made with the same turbo on a neo and an sr (both e85) respectively, as posted by the guy above. And mick O did 335kw on stock mani, so have many others gone over 300 on stock mani. Just my opinion

Well SR20det in .63 is equivalent to an RB on something like a .84. That R34 has much better hot side setup then yours and on E85.

Like mentioned earlier, Tuning P98 with a tinny rear housing will need to have detonation in mind, in which you will have to back off timing from the optimum ignition angle to avoid pinning. You have less of this issue tuning E85 fuel, that allows you to fire spark closer or at the crank angle for optimum engine output.

Or you can just run E85, which should boost up 40KWs in power getting you over the 300rwkws mark on the same boost level.

Edit:

Add in one more piece of information: Garrett GT30's turbine is in 60in / 55ex. The tip height and exducer area determines the total capacity of discharging, so technically this turbine does not have much better capacity to a GT30 turbine.

How much more power do you think a 0.82 housing will give me? 10kw? Not worth the removal/fabrication of gate/ labor again I think.

Yavuz suggested cams and also an ebc to keep boost up. Any guesses as to how much I will gain with an ebc holding boost well. 280rwkw was made on 18psi not 22.

If it was CAS, a tuner like Yavuz or even Mark should have been able to pick it up straight away and inform me? Or tested a different one. Well changing the exhaust definitely did feel a noticeable gain on the road from driving feel (without touch up tune), after the touch up tune it felt a lot lighter and torqueyer down low, so definitely the exhaust had some restriction. One strange thing now 100km/h in 5th is @2600rpms, before exhaust/touch up tune 100km/h was at 3000rpms...

Cams in a rb as tested by Tao only gain very little but shift power band higher

Where as you where making 200kw by 4000rpm it will proberly be 150kw and full boost will be later as well so won't be good for street and be felt at the track only

You should have ran your nistune tuned by Jem with 287kw on Unigroup dyno and seen where it was at to compare but does it feel quicker than before or the same ?

Cams in a rb as tested by Tao only gain very little but shift power band higher

Where as you where making 200kw by 4000rpm it will proberly be 150kw and full boost will be later as well so won't be good for street and be felt at the track only

You should have ran your nistune tuned by Jem with 287kw on Unigroup dyno and seen where it was at to compare but does it feel quicker than before or the same ?

You can't establish anything from that test, as it lost vct. And you are guessing wildly.

There are results of cams picking up power everywhere, for example Matt from Nistune's r34.

It doesn't feel quicker, much less the same, maybe pulls a wee bit harder in 3rd/4th and a lot better under 3000rpms - more light/torquey down low, this is the area that wasn't tuned well with Nistune. Also cold starts and idle is much smoother and like factory now, before was rough and I had to crank twice/push gas pedal to start.

It doesn't feel quicker, much less the same, maybe pulls a wee bit harder in 3rd/4th and a lot better under 3000rpms - more light/torquey down low, this is the area that wasn't tuned well with Nistune. Also cold starts and idle is much smoother and like factory now, before was rough and I had to crank twice/push gas pedal to start.

That's a shame that your Nistune wasn't tuned correctly. Don't blame the ecu.

It would have to be the easiest ecu to get cold start and idling nice with.

That makes no sense.

Diff ratio is the same. Revs the same.

More revs needed before for same power/speed looks like it? Remember its a freer exhaust now, so boosts quicker and makes more power at least 400rpms earlier. And more timing been added across the rpm scale. And yeh they didn't tune the Nistune correctly, not even after the second time.

More revs needed before for same power/speed looks like it? Remember its a freer exhaust now, so boosts quicker and makes more power at least 400rpms earlier. And more timing been added across the rpm scale. And yeh they didn't tune the Nistune correctly, not even after the second time.

That doesn't make any sense. If you had 1000hp it should still sit on the same rpm at 100km/h.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • I'd be curious to hear more. Otherwise, have you driven a modern x-trail? I wonder how it compares. Here in Australia they are/were popular for rentals and fleet vehicles. I have been in some and my impression was they are bad. But, this may have been very different in the 2000s at a good trim level. Twenty years is plenty of time to make the model worse. I do very much agree with the 2 silver cars in the garage approach. But, not driving because it's too hot would not leave a lot of time in the year for many Australians. I don't think you need to worry too much unless the car has actual issues with overheating. 
    • Back again. I returned to Japan in Jul/Aug to spend time with the car on my birthday and remind myself what all the sacrifice and compromise is for. It happened to line up with the monthly morning meet in Okutama, which I have been wanting to go to for a long time. It's a unique event at a unique spot with really rare, interesting, and quirky cars. It's where all the oldheads and OGs gather. The nighttime scene at DKF certainly has its place and should be experienced if you're into cars, but there's too much bad attention and negativity around it now. IMO the better time is Sunday morning at DKF or Okutama; it's more chill and relaxed. I'm glad I was finally able to go, but not sure it's worth the drive from all the way from Nagoya immediately the day before, unless I was already staying in Tokyo for the days right before the meet, because you have to wake up quite early to make it in time. Funnily enough though I didn't drive the car all that much this trip because it was just too damn hot. While there were zero issues and running temps were nominal and the A/C was strong, RBs already run crazy hot as it is. Sure, it took it all like a champ but something about driving these cars in the ridiculous heat/humidity bothers me and makes me feel like I'm asking too much of it. I'm just me being weird and treating the car like a living thing with feelings; I'm mechanically sympathetic to a fault. Instead I was mainly driving something else around - a KX4(silver) 2001 X-Trail GT, that I acquired in May. There's a few different flavors to choose from with Xs, but visually it's the Nissan version of the Honda CR-V. Mechanically it's a whole different story as this, being the top-trim GT, has an SR20VET mated to a four-speed auto and full-time AWD! It was a very affordable buy in exceptional condition inside and out, with very low mileage...only 48k kms. Most likely it was owned by an older person who kept it garaged and well-maintained, so I'm really happy with how it all worked out. It literally needs zero attention at the moment, albeit except for some minor visual touch-ups. I wanted something quirky, interesting, and practical and for sure it handily delivers on all three of those aspects. I was immediately able to utilize the cargo and passenger capacity to its full extent. It's a lot of fun to drive and is quite punchy through 1st and 2nd. It's very unassuming -in the twisty bits it's a lot more composed than one would think at a glance- and it'll be even better once I get better tires on it(yes, it's an SUV but still a little boat-y for my liking). So...now I have two golden-era Nissans in silver. One sports car and one that does everything else; the perfect two-car solution I think👍 The rest of the trip...I was able to turn my stressed brain off and enjoy it, although I didn't quite get to do as much as I thought. I did some interesting things, met some interesting people, and happened into some interesting situations however, that's all for another post though only if people really want to know. Project-wise, I went back to Mine's again to discuss more plans and am hoping to wrap that up real soon; keep watching this space if that interests you. Additionally, while working in the tormenting sweatbox that is the warehouse, I was able to organize most of the myriad of parts that my friend is storing for me along with the cars, and the 34 has a nice little spot carved out for it: And since it can get so stupid hot in there, that made it all the more easy -after I was standing there looking at the car and said 'f**k it'- to finally remove all the damn gauges that have mostly been an eyesore all this time. Huzzah. The heat basically makes the adhesive backing on the gauge mounts more pliable to work with, so it was far less stressful getting this done. I didn't fully clean it up or chase the wiring though; that will happen once I have the car in closer possession. Another major reason to remove all that stuff is to give people less reasons to get in my car and steal s**t while it's being exported/imported when/if the time comes, which leads us to my next point... ...and that is even though it's time in Japan is technically almost up since it's a November car and the X would be coming in March, I'm still not entirely sure where my life and career is headed; I don't really know what the future looks like and where I'm going to end up. I feel there's a great deal of uncertainty with me and as a result of that, it feels like I'm at a crossroads moreso now than any point in my life thus far and there are some choices I need to make. Yes, I've had some years to consider things and prepare myself, however too much has happened in that time to maintain confidence and everything feels so up in the air; tenuous one might say. Simply put, there's just too much nonsense going on right now from multiple vectors. Admittedly, I'm struggling to stay in the game and keep my eyes on the prize. So much so in fact, that very recently I came the closest I ever have before to calling it quits outright; selling everything and moving on and not looking back. The astute among you will pick up on key subtext within this paragraph. In the meantime I've still managed to slowly acquire some final bits for the car, but it feels nice knowing there's not much left to get and I'm almost across that finish line; I have almost everything I'll ever want for my interpretation and expression on what it is I think an R34 should be. 'til later.
    • Thanks for that, hadn’t used my brain enough to think about that. 
    • Also playing with fire if they start to flow more air down low than what the stock twins can. It's not even up top you need to worry, it can be at 3000rpm and part throttle and it's getting way more flow than it should.
    • Any G40/1000 or G40/1250 results out there?  
×
×
  • Create New...