R34 Gt-t

[satanic]

mxtcy; for 200rwkw I would do exactly what you've said - EBC; Pod Filter; SAFC2?

[nsm034]

him having a powerfc and yours not having one (and hitting r&r) is a pretty big difference in my opinion.

If you put a powerfc on yours (assuming its manual) the gap would open up a fair bit I'd imagine.

Simple fact is, you can get power out of a 33 or 34. They're both very well built and can handle much more than they came out the factory with...

thats what i thought. power fc is on its way as we speak fom japland. bloody r & r pisses me off . oh well it's there for a purpose i suppose. bloody new exhaust was flowing too well and spiked the boost

[666DAN]

It's just r no r&r I posted the stock ROM values a little while back. The e-manage can get around it fairly easily, once you can see where the ROM drops timing (around 10 degrees) above ~12psi.

I've got a bikirom and just upped the timing via USB in seconds, pulls hard to redline now without that bogged feeling.

The auto is a bit of a shame though, I really want to put bigger injectors in to take advantage of the turbo, but I can feel the box just isn't going to like it. (already have to wait a long for it to warm up to operating temp and have a bit of bite on the bands)

[pixel8r]

The common road to take for the autos is to use the apexi safc (air flow) and sitc (ignition timing) piggybacks to tune it. There are always going to be limitations without a full replacement ecu but also remember the auto box can only handle so much power too. Actually, you'll find that the piggybacks will be enough to give you more power than the auto can take anyway so if you really want big numbers (r33 or r34) then go manual and eventually you'll have issues with getting traction so for those wanting insane numbers, go the GTR!!

I have a stagea s2 (same engine and auto trans as an r34) and my safc worked very well for me. I was hitting r&r after getting my exhaust installed so I bought the safc and it fixed all the issues. After a good tune my power graph is almost a straight line up to redline - its a lot better!

I have 3" exhaust, gt30 turbo,jrd boost controller (similar to the $22 one on these forums), apexi air filter and my car has 170rwkw @ only 9psi (its a heavy wagon at 1658kg so a skyline r34 with same mods would have a slightly higher figure). Basically it equates to ~150awkw but was tuned on a 2wd dyno, hence the rwkw figure.

For more info on getting power from a '34 check out this thread...I think this may be what the original poster may have been referring to??

http://www.skylinesaustralia.com/forums/in...howtopic=112779

[Munna1]

Hi all I have been looking at some R34 GTT and some people have been telling me that its hard to pull out power from this car, I was wondering for those who have R34 whether this is true. I would gather that the car is slightly heavier than a R33 GTST, but what do guyz reckon

Thanks in Advance

"some people" have been smocking some serious sh!t or have no idea what there talking about. Its extreemly easy to extract more power from a GTT have a look at the tuning guides on the website in my sig and make up your own mind.

Up to 200rwkw with exhaust, boost, and ECU which is about 260 flywheel kw, and the car only weighs 1400kg or so.

cheers

[satanic]

LOL I made 200rwkw without a full exhaust Mind you it's not a very economical way of doing it though.

666DAN; put those injectors in - you know you want to Else would you like a set of stock injectors to hi-flow? PM me

pixel8r; 9psi on a GT30... are you planning to pump more into it? How are you going to control fuel later on when you put in bigger injectors? SAFC2 and SITC combo won't be enough to handle big injectors...

[Abo Bob]

2) The auto zaps a fair amount of power from what you are making

Not really. I think only about 10rwkw.

[Howie]

10rwkw sounds about right... mine makes 143rwkw stock in auto.. a manual 34 made about 150rwkw on the same dyno.

[pixel8r]

pixel8r; 9psi on a GT30... are you planning to pump more into it? How are you going to control fuel later on when you put in bigger injectors? SAFC2 and SITC combo won't be enough to handle big injectors...

yeah i know. shoulda gone smaller but at the time it was complicated. original turbo went cactus and i wanted to replace it with a quality turbo that would be reliable, have warranty, and still be fairly responsive, plus i wanted future power potential. its a gt30 machined into the stock exhaust housing (i think - i could be wrong tho). Many people told me it would be laggy and not run well etc. and at the time I had no other performance mods and for the most part these people were correct. I lost 20awkw and gained a lot more lag.

Then I decided it was time to do something about it so I gave it a full 3" exhaust & apexi panel air filter (dry type). This pretty much reduced the turbo lag by about 1000rpm and made it run very rich in the top end. Then I got an safc and needle-valve boost controller and after a quality tune it now runs very very nice with minimal lag and a very nice and straight power curve. Its 1L/100km more economical than stock, and with 30-40 more kw. Not a huge gain but enough to make it a fast wagon.

It would only need fuel pressure regulators, bigger fuel pump, and upgraded fuel lines, and then a apexi sitc (for ignition timing independent of the safc) and tune and i'd be looking at ~200awkw. The cost would be somewhere around $1000 but at the moment I'm so far in debt its going to be a while before I take it to that final stage. I'd like to run 15-16psi on the gt30 (it'll handle that just fine) but that will have to wait.

At the moment its actually running 11psi but the cheapo boost controller cant hold it and it drops off gradually to 9psi at the top end...

In its current form it should keep up with a stock skyline i'm guessing. the power/weight ratio is about the same.

Turbo lag is next to nil - starts spinning up around 2000rpm and reaches full boost by about 3000-3500rpm, which isn't too bad IMO.

[satanic]

They are some really nice results mate; well done!!!

RE that boost leak; try checking your BOV - I had the same problems as you and fixed it by blanking off the BOV.

I might look into the GT30; sounds like an awesome turbo for the next upgrade

[pixel8r]

They are some really nice results mate; well done!!!

RE that boost leak; try checking your BOV - I had the same problems as you and fixed it by blanking off the BOV.

I might look into the GT30; sounds like an awesome turbo for the next upgrade

Definitely do the research first. apparently there isn't just one gt30 so make sure u get the right one. I dont have the exact part number though.

Many people have had great results with GCG highflow turbos. they are still gt28, they use your stock turbo & housing etc. which you have to send to them. They basically replace all the important bits with steel parts and highflow it which I think makes it slightly bigger internally.

Being slightly smaller (I think) than the gt30 means you'll have a bit less lag and being all steel (like the gt30) it can still handle lots of boost (think upwards of 18psi).

A lot of people cautioned against the gt30 but I've found that whilst it reaches full boost later, with full 3" exhaust and good tune (safc) the revs build up so quick that the lag is hardly noticeable. The exhaust gives more torque off boost as well which helps to get the turbo spinning.

And the sound of the turbo is awesome

Edited November 13, 2006 by pixel8r