Is This A Good Tune?

[700HP-GTR33]

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

[Roy]

How are we supposed to tell based on a dyno sheet? Arent you running bigger turbos?

[R31Nismoid]

I'd say *ok*. But could certainly be a lot better

The power curve should be smooth. No wavering all over the place.

What boost/turbos? It looks a little unresponsive for only 270rwkw

[700HP-GTR33]

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]

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]

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]

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]

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]

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]

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]

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.

[paulr33]

looks alright, progressive

what turbos ?

good for stockers

[700HP-GTR33]

looks alright, progressive

what turbos ?

good for stockers

GT2860R-5(HKS 2530).........lol.....

Want to fine tune this thing with me....I'll drive and you correct timing/load/fuel map.

[Swiper the Fox]

and yes, every single dyno shop says their dyno reads low...

not EVERY one...the place i go to says their dyno is accurate

[STATUS]

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.

[BOOSTD]

interesting to see they have gone +6 on the inlet cam.....I have -4 on the exh and have 1 bar of boost by 4000rpm in 4th...if you look at yours, peak torque comes on later than before the tune...+6 may give it top end....but weren't u after mid range......hmmmnn -what the

[Beer Baron]

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]

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]

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.

[RPMGTR]

I'd call a fairly good result....only 1.25bar, DTS 4wd dyno, (DTS dyno ie. non shootout, DD shoot always gives a nicer number), and looks like the attessa is chasing the front wheel speed a little, causing the bumps. Drive it and see how it performs...........