Hypergear Turbochargers and High flow Services Development thread

[hypergear]

How ever G3 build 2011 with FNT turbine setups has totally different driving ability and power delivery behavior compare to the earlier versions.

Also the new ATR43G3s maxed 330rwkws in comparison to 305rwkws to older models with lot better boost control ability as well as the ability to hold torque.

Compare to smaller turbos, The G3 has the ability to maintain G-force all the way through limiter on WOT in both low and high gears. It is a pretty good turbo to people whom's chasing strong mid range and high top end.

also noticed the Stegea is a full time 4 wheel drive (I've been told by lillcrash it is or isn't it?). If that is the case it means the engine would have greater load compare to rear wheel drive skylines, which a bigger rear housings would work better just like the turbos on S13 SR20dets and 4WD GTiR Pulsers.

[lilcrash]

Yer I posted a dyno graph earlier in the thread. And yer it's an rs4s so it's got the attessa setup.

[Harey]

Yer I posted a dyno graph earlier in the thread.

What page is it? Or can you post it again, I went back 4 or so pages and gave up.

The response is phenomenal though yeah? 0-100 street driving is fantastic. Boost is always there even if you in a gear too high. You can also have boost with partial throttle which is fantastic for roads with poor traction and accelerating through corners.

Its such a hard thing with a smallish 2.5L engine, once you go any bigger then you have now you will loose response. Do you have anyone in your area that can let you take their car for a quick drive? You will be able to gain more top end but you will loose low down, it all depends on your preference. If you drive it balls out all the time then yeah go a bigger turbo and keep it on the boil but if its a street car driven at sub 50% most of the time then I reckon stay as is.

[lilcrash]

anyway if anyone has any ideas it would be appreciated. here is the dyno sheet. i dont know how to use my scanner so here is a photo.

Repost

[Harey]

Wow that boost is dropping straight away, something is restricting it. 230rwkw is a bit low for this turbo. Take a look at mine, we did a test before the intercooler as well, as you can see the intercooler was restricting mine. The difference gets towards 5psi as the revs increase. Even with those things sorted I couldnt break 250rwkw so your not that far off either. Its a small super responsive turbo.

[Harey]

And this is after the exhaust mods and the new intercooler, as you can see now I can hold over 17psi to redline (no boost controller). It doesnt make a tonne more power but def feels better. Also my boost is fairly flat up till about 5,500rpm where it drops quite a bit and then flattens out again. Yours is a linear drop straight from where it hits full boost! You can change the turbo to whatever you want but you will still have issues until you sort the issue/s out.

[Harey]

At 4,000rpm (~110km/h) yours is making 205rwhp and mine 214rwhp. 9rwhp difference

At 5,000rpm (~135km/h) yours is making 280rwhp and mine 295rwhp. 15rwhp

At 6,000rpm (~160km/h) yours is making 300rwhp and mine 320rwhp. 20rwhp

So you can see as the revs rise the restriction has more of an impact. But its not a massive difference either.

[lilcrash]

The power actually feels the same as it did stock, it just uses more fuel now. And it's really rough to drive.

Edited October 18, 2011 by lilcrash

[lilcrash]

Mayb I should just find a decent tuner, if it wasn't jerking and surging all the time I would be happy with 300hp. Like the way I see it now if I was to get it to peak at 16psi and not drop it would make the same power without the extra fuel when it peaks at 20psi.

[Rolls]

The power actually feels the same as it did stock, it just uses more fuel now. And it's really rough to drive.

sounds like something is wrong, should be making bucket loads more torque, fuel economy shouldn't be any diff either, sounds like someone really butchered your tune, who did it?

[Harey]

Something sounds wrong there, mines silky smooth. What power were you making stock? Stock they are like 140-150rwkw. 230rwkw should feel like a big difference.

[Rolls]

Yeah the torque figure would be almost double what it is stock, you seriously think it doesn't feel any faster?

[Harey]

Maybe not double haha but a big improvement to even a modded stock turbo eg:

[Rolls]

If you were only making ~150 like an unmodded skyline and bumped it up to 250 it would be close to double!

but yeah you should definitely feel that midrange punch compared to stock.

[lilcrash]

I can only really compare the before and after to cars I have previously raced as I didn't get a dyno before turbo blew apart. But yer it's deffinately not faster then before. I was running 13/14psi on the stock turbo.

[Rolls]

who did your tune?

[lilcrash]

Efi performance at yatala. On a side note I should have learnt my lesson when they charged me $100 when they couldn't get my front shaft out and I did it in 10 minutes without a jack.

[Harey]

The SS1 does feel like a standard turbo on 20psi if it was efficient and safe there.

What made you choose the SS1? Have you driven many small engine turbo jap cars before?

[lilcrash]

I chose it as I was after 250kw.

Before the stages I had a 1974 celica powered by a 3tgte. This is actually why I expected more from a 2.5turbo when I first got the stagea.

[hypergear]

Any way, here are some footages sent in by Abe now upgraded with the FNT G3. Compare to this footages earlier, notice any differences?

Older footage