Just dynoed my car @ 387rwhp

[BU5TER]

No RNS11Z its from a white series 2 with internals,tomei cams, greddy plenum and a td06 25g

I made just over 400rwhp at a touch over 15psi and have now had the car tuned with a power fc, why do you need so much boost to make less power, maybe the td06 is worth the extra $$ hahaha

[RNS11Z]

Well considering i dont have cams and cam gears, once i get the bigger injectors and bigger fuel pump 440rwhp will be easyly made. The reason why i had to use such high boost to get the power levels its at now is because of my fuel problem. If i were a mechanic.. hey id solve the problem myself and tell you the reason why its not making so much power.. but im not so thats just the way the cookies crumbles.

[GTS-t VSPEC]

More boost cause you've run out of fuel? That doesn't make sense.

[EVOIV]

As I said in another post, the type of dyno used does matter. I read in a Fast Fours that the JUN s15 in Perth pumped out around 700hp (???) at the wheels on one dyno, only to produce a comparitively measly 550hp (or thereabouts) on another dyno. Well, actually it's still damn impressive but not so much when compared to the 700hp figure Best is to have a dyno day shootout for comparisons sake.

[Cubes]

Generally dyno's do not vary that much.

Most of the time they are within 20rwkw of each other.

Well in Adelaide they are. All depends if they were both running the same mode etc. I think it is shootout mode that takes in to account temperature etc is it? If so that is the one that should be used.

[GTS-t VSPEC]

The 700hp figure was fudged by the people who made it, the 550hp is closer to the real figure.

[Cubes]

That wouldn't suprise me..

[GTS-t VSPEC]

Most dyno's are accurate to with a few %, unless major correction factors are used to bump it up. My tuner had all his correction factors removed:D

[rbs13]

the jun s15 has 2 different turbos.. one for track and one for dynos i belive.. read it in fast fours i think. maybe he was using the smaller one.. still 500hp from a sr20.. 4cyl is bloody good!

[RNS11Z]

Well to say the honest the truth... i was hoping for 450rwhp. But I need another pump and bigger injectors. Also once i do get cams i should see the 450rwhp mark. Not sure on what boost.

[EVOIV]

Well, I don't know too much about dynos or how they work. I just read in a magazine that they were the results. Maybe once a car gets so powerful, there is a larger discrepancy between results?

[GTS-t VSPEC]

We had a test done very recently in Perth with a powerful car, only a few % in it without correction

[RS500]

RNS-11Z,

i'd like to know what exhaust housing you have with your GT35 as this in itself would restrict the amount of power that you'll get from your engine.

for eg,

the GT35 with an A/R .63 exhaust housing (714568-0003) is rated at 550hp whereas the core itself is actually rated at 600hp.

http://www.turbofast.com.au/GTseries.html

btw, does the turbo boost/power come in pretty quick or is it reasonably laggy?

[Steve]

Tune can make a HUGE difference. I was getting 230rwkw at one dyno - four hour tune, 257 at another days later - this was just a basic 'interim' tune (until gaget and cams) and it took less than an hour.

martin donnon explained that the only way to accurately compare dynos is to use shootout mode, and punch in the figures measured in the dyno bay at the time of tune - otherwise its not really an even playing field.

Out of interest, the correction on the day I got the 257kw tune, was only 1.029 so bugger all anyway:p

[GTS-t VSPEC]

Steve, I always get it done in shootout mode, I want a real fugure, not some overcorrected bullshit to boost my ego. Your lucky you could get Martin to do yours:D

[Steve]

yeah he's a virtual gold mine of info, and if you ask questions he is happy to answer so its pretty good.

Then again, you guys have Steve at SST!

[GTS-t VSPEC]

True, Steve does about 50% of SAUWA cause he does a great job, and doesn't bullshit us.

It seems that all of our turbo's are making similar levels of power, but making the power quite differently. It will be interesting to see what happens when we all push the turbo's harder.

[RNS11Z]

Thanks for that site RS500. Much appreciated. Yes it is laggy but its just the way i like it. The part no: on my turbo is FC 6027J then its 706451-5. With a .7 A/R rating front housing (if i am correct but it has .7 stamped on the front housing). Not sure the size of tge rear if its .83 or 1.06 or .63

[GTS-t VSPEC]

It's no so much the lag that I'm surprised about, it's the fact that you need so much boost to make the power, it would indicate that there is something wrong with the setup.

[RNS11Z]

Hey, im surprised too. As is my mechanic. Once i get the bigger injectors, cams, cam gears and pump then things should be normal (lower boost, more hp)