New Stagea

[silva33]

thats what I was thinking the GTRS but there are more things to consider with the Stagea as being AWD there is no issue with traction so something like a HKS 3037 may be an option or a large garrett GT3040 etc, but I'm thinking GTRS as with the added weight the larger turbos may be even laggier than they would be on a skyline.

[mitchy_]

I will be modifying the stagea... ther only decisions im going to have to make is which turbo and ecu.. Im thinking PFC.. but Im not sure if ill go HKS GTRS or something like a GT30?? What do you guys think?? are the GT30's really laggy? I mean in the Stagea do you really notice the extra lag because they are so heavy?

just put a jun stroker kit with a T04Z in it, and do limiter launches.. no lag, hey brad?

[pixel8r]

I will be modifying the stagea... ther only decisions im going to have to make is which turbo and ecu.. Im thinking PFC.. but Im not sure if ill go HKS GTRS or something like a GT30?? What do you guys think?? are the GT30's really laggy? I mean in the Stagea do you really notice the extra lag because they are so heavy?

I have a GT30 in my stagea, along with other mods (see my sig). Last tune was 160awkw at just 9psi. I've since changed the boost controller over to a turbotech (recommended by many on these forums, including me) and noticed much improved response and it holds boost better - probably running somewhere around 9-10psi still.

The GT30 is laggy compared to stock. It'll boost up about 500-800rpm later in the revs than when it was stock.

It depends on how you define lag too. For overall speedy response any time any situation you cant beat the stock turbo.

However if I plant my foot at any intersection, even without revving it beforehand, it will be happily revving over 4000rpm by the time I reach the other side of the intersection. I had my boost controller set to 12psi previously and it would hit this figure between 3600 and 4000rpm. I think when it was stock it would hit 6psi by 3000rpm or maybe a bit less, so when you put it all in perspective its not too bad.

On the plus side, the GT30 goes a LOT harder than the stock turbo and pulls all the way to the redline.

My car is auto so with a manual and pfc or at least some kind of ignition timing control you could reduce the lag even further.

And like webng said, the fact that it wont be building much boost (if any) below 2400rpm means you will save on fuel. It certainly wont be enough to pay off the turbo but it will make you feel better every time you visit the servo

I do find myself wanting less lag at times but on the whole the gt30 was a good choice. I'd maybe try a GCG high-flow if I was to do it again. hope this helps.

[unique1]

just put a jun stroker kit with a T04Z in it, and do limiter launches.. no lag, hey brad?

:laughing-smiley-014: i dont feel the lag if u launch hard with enough revs (8000rpm or so lol)

[wolverine]

we have a GT-RS on our car and it is a nice bit of kit. slightly more power everywhere than a GCG hi-flow (but it is slightly more expensive). if money is no object the HKS 2835ProS would be pretty nice with a tiny response penalty but higher flow available on both sides of the turbo (ie more efficient).

i wouldn't want anything much larger on a street stagea due to the extra weight you need to lug around.

a GT30 specced correctly (or the more exxy but similar HKS 3037 ProS) with 260 deg tomei poncams to bring the boost threshold down would be ok but there is a little bit more work and time fitting a GT30.

think carefully, as it is an expensive exercise buying one that doesn't suit what you want, however, don't try and do it on the cheap.

...and don't get suckered into bigger is better cos it just aint so.

[oxford1327]

there was a set of poncams on ebay other day to suit an rb25det just for interest sake

[silva33]

Yeah im thinking GTRS at the moment. I had an R33 in the past with a HKS 2535 running 244rwkw and it was amazing how responsive and punchy the car was... there was stuff all lag and it just pulled!!!

If it were another skyline then i would go GTRS, the only reason i am thinking about the larger turbo is because I dont know if i am going to be happy with the 250 - 260 rwkw the GTRS will produce in a heavier car.. I'm happy to spend the right money on the right setup but i just dont want to spend the money and take the GTRS to its capacity then realise I want more...

Does anyone have any 1/4 mile times with different turbos and dyno graphs?? terminal speeds etc???