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Is This A Good Tune?

700HP-GTR33
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700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted

Hello,

I am just interested in what everyone thinks of this tune....and if It good for road.

I asked for mid range punch....and everyday driving conditions......

I have not driven it yet....disregard old tune...boost controller was not set up correctly.

http://www.skylinesaustralia.com/forums/in...st&id=92010

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https://www.sau.com.au/forums/topic/163761-is-this-a-good-tune/
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700HP-GTR33 Mentor

700HP-GTR33

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All of the technical info is available in RB26 turbo upgrades.

http://www.skylinesaustralia.com/forums/in...80&start=80

Set up at 1.25Bar

Yes I know it is a bit wonky...this is why I am asking this question.

I have been told it is not on shoot-out mode......which is at 15km intervals on the graph...but at 5km interval,therefore plots are marked up and down.......making a more precise type curve

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Your down around 50rwkw give or take i reckon aswell knowing your basically using 2530's

I have been told it is not on shoot-out mode......which is at 15km intervals on the graph...but at 5km interval,therefore plots are marked up and down.......making a rounder type curve

Have you even looked at the graph dude?

Its RPM based, not km/h based. :sorcerer:

I think someone is leading you up the garden path.

700HP-GTR33 Mentor

700HP-GTR33

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Your down around 50rwkw give or take i reckon aswell knowing your basically using 2530's

Have you even looked at the graph dude?

Its RPM based, not km/h based. :sorcerer:

I think someone is leading you up the garden path.

RPM and SPEED(KM's and hour) are both the same.

As for the 50RWKW I am under.....I believe his dyno needs to be callibrated...I have been told he is always 30 to 40KS's less than other tuning houses.

Adriano Grand Master

Adriano

Posted
Posted

Im sorry, every dyno shop says their dyno reads lower, that way if you get more power somewhere else you cant blame them. Plotting is no different in shootout or non shootout mode. If their dyno reads low, dont you think they would be the first to get it calibrated? To be perfectly honest, i dont see how cars can be tuned to give a wavy power graph, on a power run it only goes through about 15 load cells, and as long as the numbers dont jump all over the place ive always found the curve to be smooth as long as there is no missfire. Can you get a graph of AFR's?

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
RPM and SPEED(KM's and hour) are both the same.

As for the 50RWKW I am under.....I believe his dyno needs to be callibrated...I have been told he is always 30 to 40KS's less than other tuning houses.

I stand by my comment about the garden path.

Definately sounds like someone is taking you for a run.

There are plenty of well known, proven workshops in Vic.

Just go to one of them

Beer Baron Grand Master

Beer Baron

Posted
Posted

i can't be in shootout mode mate as it's not a dyno dynamics dyno. i have nfi if it's a good tune or not. maybe your engine has 60psi compression and the tuner did an amazing job just to get that power. on the other hand it could be a really good engine, with a really poor tune. and yes, every single dyno shop says their dyno reads low...

Devils_Advocate21 Mentor

Devils_Advocate21

Posted
Posted

Id have to aggree with the up and down waves on the tune, usually they are alot smoother than that aswell, looks almost like up and down "fluctuating" boost in that area or wavey afrs whos to tell tho easiest also would be an afr curve and or boost curve may help in determining these things as well as barons comments its hard to say health engine or not

700HP-GTR33 Mentor

700HP-GTR33

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Thank you for your comments....I will try and get a afr graph and post it up soon....tuner will not be in town till thursday.

The state of the engine also has a lot to do with the max power.....I agree.

Was unaware that most tuners said that their dyno's showed lower readings than the others.....would have thought they would have the highest reading to lure the client back.(ie)"look at that great curve...look at that power I was able to tune in.."

When is the next Dyno day for SAU(VIC)...would love to see all the cars rated on the same dyno.

STATUS Grand Master

STATUS

Posted
Posted

Dynamic Test systems are usually very good dynos.... every bit as good as Dyno Dynamics. That wavy section could be a myriad of things.... roller traction etc...

power for GT2530's is average though.

Beer Baron Grand Master

Beer Baron

Posted
Posted

boostd mate. inlet cam and exhaust cam are two different things. you can't compare settings on his inlet cam to your exhaust cam. it's quite common to retard the ex cam and advance the inlet cam on rb26.

2rismo Grand Master

2rismo

Posted
Posted

Whether the power curve is smooth or not can be a function of the scale of the dyno graph itself. Some tuners are known for making the vertical scale on a boost or AFR curve massive so the AFR and/or boost curve looks very flat.

In saying that I would expect more power everywhere with 2530's.

BOOSTD Mentor

BOOSTD

Posted
Posted
boostd mate. inlet cam and exhaust cam are two different things. you can't compare settings on his inlet cam to your exhaust cam. it's quite common to retard the ex cam and advance the inlet cam on rb26.

Yes, thanks for that. It's well known that retarding the exhaust cam will increase exhaust gas flow at low rpm in turn bringing boost on earlier, The advanced inlet cam causes a lumpy idle and better efficiency at high rpm....which can be seen on the dyno graph. I wasn't comparing the cams, but, what the different settings will acheive. His exhaust cam has been set at 0

Maybe the timing belt is loose and the cams would dial into in+2/ex-4 who knows, however comparing before and after graph lines its pretty obvious the tune favours top end by the shifted torque peak.

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