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Need Advice.

Room42

By Room42,
in Engines & Forced Induction

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Room42 Proficient

Room42

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So its like this...I have a bunch of bits on my r33gtst. Z32 afm, power fc, datalogit, wideband stuff, 900cc injectors, big ass frontmount, hd clutch, beasty fuel pump, stock turbo at 14 psi. So the next bit for power is the turbo eh?! Anyway later this year I'm getting a tough rb25/30 built (forged rods and pistons and bunch of other crap). I'm looking at getting a gt3582r for the new motor and the question is this (drumroll) Should I wait till the rb30 arrives or should I get the gt3582r setup now?? Reason I ask is I really want more power now without being scared of the stocker shitting itself but I can wait if I have to. I dont want to buy a smaller turbo that suits the 25 when I'll just have to buy another one for the 30 in less than 12 months. Any ideas appreciated.

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zebra Grand Master

zebra

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I would wait

but you can still do it...just depends on whether you want to pay for tuning twice, 2 dump pipes (RB30 one needs to be longer) etc

GT35 wont be the most responsive thing on a stock 25 but plenty of peoole still use them.

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Room42 Proficient

Room42

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Cool sounds good. Yep I'm tuning with the missus in the passenger seat keeping an eye on things while I drive and give her directions regarding the tune. The dump doesn't matter cos a mate at work will do it for a few the sphincter of the universes on the weekend. I was pretty much going to do it but just needed a couple more opinions for the affirmative.

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Room42 Proficient

Room42

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Haha :) We are pretty safe on all fronts really. She only does changes to the tune that I tell her to do so that's all good there. Also she doesn't like driving the skyline much. Its not comfortable enough for her. And I cant get her to floor it, not that I really blame her.

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Room42 Proficient

Room42

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:woot: I would but she ain't that silly. I constantly teach her about cars even when she's not listening and she is quite aware of what the gt35r will do. She was scared to drive a pulsar et turbo I used to have with a t25g on it. Plus she has a hyundai accent. Needless to say it is slow as shit. Anyway gotta head, work early and all that bizzo. Cheers for the ears and chat. :D
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stig mick Veteran

stig mick

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Cool sounds good. Yep I'm tuning with the missus in the passenger seat keeping an eye on things while I drive and give her directions regarding the tune. The dump doesn't matter cos a mate at work will do it for a few the sphincter of the universes on the weekend. I was pretty much going to do it but just needed a couple more opinions for the affirmative.

your mate has an odd payment plan lol

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Don Dada Mentor

Don Dada

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I tried that whole thing already with the missus driving but it didnt work....couldnt get her to hold it steady in one cell for shit!

Anyway slap the 35R on there and done with it.....I'm guessing it will be a 0.82 turbine which will be a little laggy, but should be lots of fun after 4500ish

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ARTZ Grand Master

ARTZ

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way i see it you have 2 choices

HEADS... bolt it on now and have fun blowing up the rb25 ,it would give you some practice on setting it all up so most mistakes will be made now, then when you go to change engine you will have a few tricks up your sleeve already..also gives you a chance to get used to the power gradually instead of a heap all at once..

Besides the 25 might last quite a while and you wont need to put the 30 in just yet..

Or

TAILS.... keep the stock 25 and all its bits.. If you want to sell it down the track u could chuck the original engine back in .. And sell the 30 seperate or if you kill the 30 you have a spare engine u can chuck back in..

now flip a coin :D

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The Mafia Grand Master

The Mafia

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good luck telling your missus how to tune while you are driving.

You simply cannot tune without being absolutely focussed on the map. You can't do that because you are driving. So how are you gonig to be able to tell her what to change?

Umm.. This is an accident waiting to happen.

My suggestion - If you know how to tune, get someone that can drive to drive.

If you don't know how to tune and think its just a simple thing like taking a piss - Then I can only wish you luck.

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JonnoHR31 Grand Master

JonnoHR31

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i've done it heaps of times, aslong as your not tryna make huge changes while your driving its fine. just use the logs after the drive to make adjustments. best thing to teach the mrs is to let you know is theres anything out of the ordinary (too lean, knock etc).

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Room42 Proficient

Room42

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For starters I've tuned 600 hp na 5L engines with motec and autronic. Example of the missus and me tuning; I say watch the knock and tell me when it starts to go up. She says ok. I floor it and when and if it starts to go over about 20 she says so and I back off and see what rpm it was and adjust timing by 1 or 2 degrees. If there is no knock then 1 degree gets added to the whole line. FYI My missus is a qualified teacher and is smarter than 94% of people out there according to her uni results. I reckon I'm doing pretty good for tuning :thumbsup: . I'll make a quick clip this afternoon and post it on youtube and link it here so doubters can see. and post a pic of the max knock and afr lol. No luck here, only years of XP :rofl:

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Room42 Proficient

Room42

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Dyno time would be alright. A dyno is a lot safer for tuning, ya can only legally floor it in second before the speed limit. Here is a quick run I did before the wideband and datalogit. I cant get a new one to upload for some reason. Its about 14 psi dropping to 12ish. The shift light is set to 6500 rpm. When I checked the afrs from the tune in the video it was real low, about 9.8 to 10 ish. It's leaner now and going a lot better but bear in mind its a stock turbo so it is what it is. Oh I forgot to mention in the opening post that the exhaust is done too. I'll try get a new vid uploaded soon.

http://www.youtube.c...h?v=zvhEyMZNIs8

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