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Rb30/rb26 Base Tune Done!

leeroy_25

By leeroy_25,
in Engines & Forced Induction

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leeroy_25 Community Regular

leeroy_25

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Hi guy's today I finally got my Rb30/26 base tuned. It had been run in for around 700miles so was more than ready! As I had some fluffy running issues during the run in period I decided to get a base tune done with the stock pump and AFM's to make sure it was all running clean prior to swapping AFM's and more than likely the pump for my future plans. After some minor tweaks richen up the map off boost and load the running issues were all pretty sorted so we went for a couple of power runs starting at 6psi wastegate boost to give the car some initial runs up to 6500rpm. Once happy with that the boost was increase to 0.8bar and some further tweaks were made. At this point the Stock MAF's were pretty much maxed out so I called it a day but here is what I ended up with so far.

BaseTune08bar.jpg

I think the rpm scale is wrong so ignore that. It was revving just short of 6500rpm. The power shown is flywheel power and it equated to 324bhp at the rear wheels I was hoping for a touch more but then I had planned to run it up to 6750rpm initially then I got a bit nervous!

The engine is running HKS step1 cams with adjustable pullies so I am hoping to dial the power ban back a touch to make better use of the cams when I go for the final tune. The 660cc sard injectors are happily run at about 60% duty at the moment. Whether or not I need to put a slightly larger pump in remains to be seen.. Anyone have any clues as to how much wheel power a stock gtr pump can hold on an RB30?

Knock levels are max 28 at the moment but then boost is still relatively low. We tried to fiddle with the ignition timing a bit but it made no significant gains at the current boost so we left it as it was .

I plan to drive it as is for a couple of weeks and make sure I am happy with it all then I will put on my larger MAF's and pump if need be and go back for a final tune taking the rpm up to 6750 limit. Maybe a little higher. I am hoping I can get into mid 500's flywheel power but not sure I will get there yet? My tuner on the other hand seems pretty confident!

If anyone has any thoughts on my printout let me know. Wouldn't mind comparing with what other people have made on the same boost and similar setup?

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https://www.sau.com.au/forums/topic/358733-rb30rb26-base-tune-done/
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KiwiRS4T Grand Master

KiwiRS4T

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Sorry i missed your build thread - what is your set up? Turbos, ecu? How does your chart show flywheel hp - have you pulled the motor out and put it on a bench dyno? If your pump is the original stocker progbably good idea to at leat get a new Denso equivalent. For comparisons check out http://www.skylinesaustralia.com/forums/topic/104332-rb30-hybrid-upgrade-all-dyno-results/ and be sure to post yours in there when you have your max boost results!

leeroy_25 Community Regular

leeroy_25

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Hi There,

I am on a single turbo and Apexi ECU, HKS Step 1 cams and 660 sard injectors. Stock pump art present. and Stock MAF's. The print out I got from the dyno was the estimated flywheel one rather than the actual wheel power we saw on the day.

Cheers for the link.

Lee

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