Jump to content
SAU Community

Recommended Posts

Should be much the same, maybe a little less...I don't think the ATR43 comp housing is much bigger than the standard comp housing, if at all. I just wanted a more factory look so got Stao to high flow the factory comp. The rear housing is the same as the ATR43 so this is why it should produce similar results.

Apparently my turbo is now ready so I'll pick it up, install next weekend and get it tuned soon after.

sounds alright, just get a sensor to watch your intake temps..your runnign a PFC arent you??

Little update:

This is sent in from a member. Using an ATR43SS1 (none PU version) on a stock RB20det with usual mods. Car made 227rwkws on 18psi. Green is final tune, and Yellow is his previous tune on stock turbo. Running pump 98 fuel.

rb20det225rwkw.jpg

Yellow line looks much more like the SS1 on a lower boost setting than a stock turbo... Might want to check that stao

Been told by the tuner the yellow line was what the car had on stock turbo after it was tuned. It was back for return after new turbo was installed, Blue line was the SS1 on a lower boost and Green was final tune on 18psi.

That turbo had about the same response as a stock 21U turbo on a Rb25det.

that doesn't make sense, the stock rb20 turbo makes full boost far earlier than 4200rpm, more like 2800rpm.

The spool times look identical, it just looks wrong. Not to mention I am unaware of any rb20 that makes 195kw on a stock turbo.

Edited by Rolls

Except definition of "full boost" is differ. I don't have a boost reading yet, The point of where power starts to sprad is not where it reaches full boost. 195rwkws was archeived by the SS1 on lower boost based on the blue line.

I'm going by the information his tuner sent at this stage.

r32dyno.JPG

How is anyone getting that the yellow/stock turbo traces are reaching full boost at 4000?

They only show power and torque, not boost. The thing could be on full boost at lower revs but the engine isn't making a decent climb in power or torque until 4k.

Yeah, even if the stock turbo's result doesn't make much sense to people, no one has actually said how good the upgrade has been...that's a lot of power for something that needs a push to get up a hill.

How is anyone getting that the yellow/stock turbo traces are reaching full boost at 4000?

They only show power and torque, not boost. The thing could be on full boost at lower revs but the engine isn't making a decent climb in power or torque until 4k.

Yeah it could be the typical stock tune midrange timing pull making the power dip making it look like full boost is there, and the full boost is at 3k where the earlier peak is. Good point.

edit: neo turbo has the bigger rear housing, maybe it was on full boost at 4k, makes sense I guess. Top result for a rb20 as well.

Edited by Rolls

I dont quite get how that pissy RB20 (flame suit on) can make 190rwkw on a stock turbo when a lot of us RB25 owners JUST make 200rwkw w/ stock turbo on a much ballsier engine..

its a 25 neo turbo

Yep i did read that, but still an RB20 with a neo turbo and typical RB25 neos (with neo turbos) both making in the vicinity of 190-200rwkw.. I smell somethings not right somewhere..

LOL I think I know what smells rondofj...

That makes much more sense the fact the yellow line was an R34 turbo. Great result by the SS1! Goes to show you that the R34 turbo doesnt really suit the RB20 engine as it has the same response as the SS1 which makes 30-40rwkw more.

Yep i did read that, but still an RB20 with a neo turbo and typical RB25 neos (with neo turbos) both making in the vicinity of 190-200rwkw.. I smell somethings not right somewhere..

People have made up to ~220rwkw with the standard turbo on an RB25, I see no reason the RB20 can't push 200 especially with the same turbo. Spool time and full boost would just take longer, which it does in the graph. Also allow 10-15rwkw variance between dynos.

Consider similar effect of RB25 vs RB30...they can make similar power but with the RB30 coming on much earlier. The 500cc difference isnt that great.

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

    • Yea - I mean I've seen my fuel pump which is decades old and uh, while I'm not saying this with real knowledge... but I sure get the ick at using anything in the fuel system that produced the state of that pump. Many years ago I went through multiple pumps (and strainers) before I dropped the tank to clean it out with extreme violence. I'm talking the car would do maybe 50km before coming to a halt, which resulted in me cleaning out the filter with some brake cleaner and going on my way. None of my stuff ever looked like what came out of your fuel tank. I don't think I'd be happy with it unless every single component was replaced (or at least checked/cleaned/confirmed to be clean here).
    • I'm not going to recommend an EBC pad. I don't like them. Just about anything else would suit me better. I've been using Intima pads for a while now.
    • Agreed, and in particular the earth strap that should go from the subframe to the chassis but it often broken or left off. There is a section in the R32 workshop manual you can follow for troubleshooting if you don't see anything suspicious, and depending where you are (there is no location on your user profile) you should be able to get your hands on a second hand replacement unit still if needed
    • Yeah they mention as a R34 for 2.5 Turbo...but then again thos "small" were also for R34 by that different site. But i look into it and that 310mm EBC is for R34 GTT. And by those you linked the specs are the same 🙂    EDIT: I found these on one site here: DBA 4000 series T3 DBA42304S They are 310mm...and it says are for R34GTT...are there good? EDIT2: ok they have pads too.  What "color" should i get for street use? I dont want/need some noisy ones...(and if they are not that dusty that is good too)
    • Yeah, shame. Maybe  driver's carpet is available 🙏. I am waiting for both amayama and nangun to confirm.
×
×
  • Create New...