Jump to content
SAU Community

Recommended Posts

I'll dig out my old dyno sheet for you tonight, it doesn't have boost on it unfortunately, can't remember if it was running 12 or 14psi at the time and made 174 or so rwkw. It was all in by 4200 or so on mine.

It's also pretty obvious where the power starts on the graph as mine has the straight line followed by the big hump aswell.

  • Replies 101
  • Created
  • Last Reply

Top Posters In This Topic

Champ hyper drive are very good and you might get mor but it sounds to me like a safe tune

I have an auto r33 and found at lower boost i made more rwkw at190 @ 10 psi with a very healthy power band

james

hm.. 50degree IT... gonna be some reasonable correction there for sure so it'll be even a lower figure realistically speaking.

for a gcg hi-flo/17psi on rb20 now me thinking it should be a bit more when you think that 15psi on a rb25 nets you around the 250rwkw

The RB20DET needs BOOST! :)

I went from the rb20det making 164rwkw on 15psi to the rb30det making 176rwkw on 9psi.

Engine size doesn't affect power, head and turbo airflow is what makes power.

Push 18psi in to it and it will crack your 200rwkw goal.

Speak to Chris32 what he thinks of his old Remapped ECU done by Martin Donnon compared to the PFC he now runs.

If I remember correctly he said the mid range power increased quite a bit with the pfc.

With regards to boost tailing off... This will aways occur with a manual boost controller to some extent, a cheapish option is to head down to your local turbo rebuilder and pick up a new wastegate actuator, down in Adelaide ATS sell an adjustable actuator for ~$120. You can select the preset also, from memory its something like 8psi, 12psi, 14psi, 17psi etc.

Where did u end up mounting the resistor pack?

The joys of trouble shooting a car that isn't quite performing the way you want it to. :O

Sorry I have to ask... Does it actually make any boost in first? Being an auto would have an advantage as it will spool a little earlier.

Edited by Cubes

yeah does get boost in first, sometimes it shoots to like 1.7 bar for a millisecond which is kinda odd. Spins a bit at the end of first gear.

Installed resistor near the brake mastercylinder. Right in the corner of the engine bay. That should be ok yeah?

I can't just put 18psi in it can i? its only one of those 22$ boost controler maybe it would help with a better controler. I dono anywhere in perth that could sell actuators may have a look around.

Yeah Millar the Hoon they do a good job I have heard only good things and my car does run nice and is faster just thought i should be getting a bit more hp than it is.

4doorsleeper runs a new gen GCG highflow on his RB25DET AUTO, that made 220rwkw on I 'think' 14psi.

So say... 20psi.. Might get you close to that.. Maybe depends if you run in to detonation problems. BUT then you need to start looking at engine reliability.

Resistor location will be fine, up against the master cyl is a little better than above the turbo dump :)

Hows fuel economy with the GTR injectors?

Edited by Cubes

yeah fuel economy doesn't seems to bad but i haven't been driving it much only just got tune and been give it a bit of shit just to see wats its like a bit.

Ill need another tune if i want to run 20psi though won't I?

do you think maybe my dump pipe cause cause problems its just a open dump pipe no splitters.

Haha is yours near your exhaust? oh yeah wat you think about heat wraping cooler pipes cause they get prity hot. (the onethat goes past the fan.

tune already cost me 800 and the guy recons it made no difference when he put 18psi into it so it isn't worth doing really i supose. It is a safe tune atm so probly best to keep it safe.

May just get a shift kit and leave it at that, not worth throwing an more money into the car since its auto, and any other upgrade turbo would just cost too much

Do you have a boost gauge + do you service your car much + how long have you had it + can you use cam gears to boost earler

Autos are choice 4 every day car and shift kit should make a difference

i wounder about the condition of your engine and gearbox

but remember hp is not everything you also need driverbility aswell

James

Ahh well.. Thought about reselling the turbo?

Drop on a R34 (choice) or R33 Turbo and make approx the same power on less boost with less lag?

But it really depends if your figure is reading a little low or not as to whether the r34/r33 turbo would make the same power.

yeah brought the car stock a few months ago probaly about 6 months or something. Service it often do all the work myself, yeah have a defi boostgauge. I dono why i would get r33 turbo or r33 doubt that would help. Hyperdrive dyno isn't one of those dyno's that read high so it would be an acurate reading.

I have changed the gearbox oil but have not yet changed the filter as gona do that when i do the shift kit. Still have not yet decided on shift kit or not yet.

Well I have similar modded r32 auto to yours anton, except no GTR injectors (have a nismo FPR to up the ante on the injectors a little).. but a highflow rb25 turbo (not gcg i dont think)

I'm only running 12psi at the moment and a bit of a self tune on the SAFC but it doesn't seem too much throw you in your seat.. and I estimate only around 140-50rwkw at the moment.

In about 2 weeks I am getting mine tuned.. but realistically I think i'll be lucky to get 180-190rwkw @ 16psi. The same turbo made 230rwkw @ 16psi on gtrgeoff's old rb25. I'll let you know how it goes, but I just don't think the RB25 highflow on rb20 is a great match.

Edited by predator2

was that geoffs guy auto? keep me posted on what you get.

I also find that at the end of the revrange when it should change gear is sorts backfires and i tihnk its hitting the limiter and take a little while to change. Is this just the auto not being able to keep up? and wil a shif tkit help

Here you go, same turbo, different rb20

running 12psi, i remember now because i still had the stock injectors in it at this stage which is why the a/f ratio starts climbing at 6k, i added a couple of extra psi after i put 550's in.

post-2863-1132642989.jpg

Yeah, manual gearbox.

I had an HKS adjustable, but i can't see that being the whole of the problem. It was holding a consistant 12psi right through to the end of the run.

This was on the stock ecu aswell, i got an emanage later on to run the 550's.

I can't see the gearbox causing a difference of 500rpm in response, though it would effect overall power. What sort of exhaust? what size/and type of cat/ and how old is the cat? Have you tried dropping the exhaust by any chance?

the exhaust is 3inch no cat, no spliter in the dump pipe, and has 2 muffler although the rear muffler is pritty much useless as its bigger than 3inch so wouldn't be doing much. Maybe the dump pipe is a problem? or the other muffler in the middle of the car

The back fires are the fuel cut they are pops arnt they

that is y i turned my boost down to get FULL throtal and a much better power band

i have an eboost2 and i can use it very well

so i turned they boost down and the computer can handle the boost now

thus a good power band + a couple more hp

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

    • For these last 7 years of ownership, I've always had to use a small scissor jack under one of the front tow hooks to raise the front just enough so my low-profile jack fits under to reach my subframe jack point. I'm beginning to get annoyed of always having to do this. Are there any lower low-profile jacks that fit under the gtr lip on a dropped car?
    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
×
×
  • Create New...