R33 Gts-t Dyno Graph

[riggaP]

agreed that dyno figures can be somewhat misleading but i believe you can get a rough estimate from a dyno graph, and thus, they are a tuning tool - i wouldnt class them as being an accurate reader of power.

comments about track times are abit more valid however i wanted to say that an ET is sometimes pointless aswell. the best indicator of power is the terminal speed.

fwiw, i have recorded a 199.5rwkw on c&v's dynodynamics dyno. ran a 13.8s ET with a 2.1sec 60ft and 99mph terminal speed. goes to show that the car was tuned for mid-range...

mods are as follows:

-powerfc

-avcr @ 0.8bar

-fmic

-full exhaust

-stock airbox with hiflow air filter

Yep, dynos are tuning tools. I dunno if I'd say ETs are pointless. I'd say all 3 individual measurements are pointless when stated on their own. Eg, no point having a 140mph TS if the best ET you can get is mid 11 when its capable of a low 10.

First time at the track I ran 14.3@98mph with a 60' of 2.4. Best 60' on the day was 2.3. Only mod was a cat back zorst. I installed a K&N panel and made 126rwkw on BMT's dyno.

I then added a few bits'n'pieces and made 140rwkw then ran a 13.8@101mph with a 60' of 2.2 on almost unroadworthy 205 tyres. From this visit to the track I learnt that TYRES are the best mod anyone can invest in coz my 60' times were almost unaffected and now wheelspin is an issue in second gear. Mods were: bleeder @ ~10psi, full exhaust (crappy cat tho), stock airbox with K&N panel filter.

I've since upped the boost to 13psi and had a chipped ecu put in. It made 153rwkw. Just waiting for a set of wheels to arrive with new tyres and I'm aiming for a low 13 ET. To achieve this I'll need a sub 2s 60' and maybe a few more mph. I've personally spent just over $1K on mods. I'll be spending more than that on tyres alone.

[RBVS]

with same mods as others eg exh, ecu, fmic, pod, stock turbo and engine i got 270hp or 201kw. with a 2.234 60' , 102.04mph i had an elapsed time of 13.571

id say i could have done better with a better clutch set up, but thats the same old story. id say that would be on par with rest of the state and maybe your problem is with gtst-vspec not WA. so what if he hasnt ran a et for your benefit, just somthing to consider. I hope im able to put a spin on things :headspin:

[cameron]

sorry guys finally got the dyno graph...

we did 3 runs and uped the boost each run...

[Busky2k]

Is it just me or is 99 and 102mph terminal speeds a bit on the low side for 200rwkw skylines? (Referring to RBVS and Franks) My best TS was 106.5mph and thats with 165rwkw (on 2 different dynos), granted my car is only 100kg lighter, albeit with a longer diff??

Hrmmm... maybe dyno figures arent all that reliable...

Btw cameron, your car is really running knife edge AFRs for the street! Especially that green line. When that fuel pump goes in, try not to go over 12:1 so you can have a little margin of protection!!

[riggaP]

Is it just me or is 99 and 102mph terminal speeds a bit on the low side for 200rwkw skylines? (Referring to RBVS and Franks)  My best TS was 106.5mph and thats with 165rwkw (on 2 different dynos), granted my car is only 100kg lighter, albeit with a longer diff??

Hrmmm... maybe dyno figures arent all that reliable...

:uh-huh: :uh-huh:

[RBVS]

my best TS is 108mph but that was a 13.6, other factors come into play with TS.

yes all dynos are going to read differnt and they are only tools its all been said befor. but who's to say my reading was true and yours were low or the other way round. cars can also be tuned differnt, you may have more bottom end or midrange than i have peak. what ET did you get? maybe your getting better performance with a lower peak out put.

[cameron]

heres the kw reading....

Thanks for replying....

lol what quarter mile do you guys reckon i would get.... were taking it to the track next month

[benm]

You will be doing well to get a 13.5sec out of it

See more 1/4's at: http://skylines.pnc.com.au

[RBVS]

i think with 2.2 or lower 60'' times you should be around mid 13's. let us know how ya go.

[riggaP]

what quarter mile do you guys reckon i would get

It is almost impossible to determine what quarter mile times/speeds you're going to achieve by looking at a dyno reading.

2 examples from earlier in this thread: I ran a 14.3@98mph with a dyno reading of 126rwkw, you ran 14.1@103mph with 162rwkw. I ran a 13.8@101mph with 144rwkw, Franks ran a 13.8@99mph with 199rwkw. I'm not sure how much clearer these examples can be.

Its not just the final dyno figure that matters, its everything that happens in the rev range as well.

[franks]

It is almost impossible to determine what quarter mile times/speeds you're going to achieve by looking at a dyno reading.

2 examples from earlier in this thread: I ran a 14.3@98mph with a dyno reading of 126rwkw, you ran 14.1@103mph with 162rwkw. I ran a 13.8@101mph with 144rwkw, Franks ran a 13.8@99mph with 199rwkw. I'm not sure how much clearer these examples can be.  

Its not just the final dyno figure that matters, its everything that happens in the rev range as well.

... just to clarify, the power level when i ran 13.8s was not at 199rwkw it was more like 187rwkw...and i have an R34 which is also slightly heavier than a R33.

[rev210]

funny the dyno thing really. I am a long time detractor of it's road going merits as a comparison between cars. It's a good tuning tool as a relative guide thats it. The air temp is adjusted for in the shootout mode from memory however the fact that you are stuck with lower timing and boost settings effects the power to a degree the software can't predict. The right way to do power runs is with the bonnet down and there are plenty of places that don't do that.

I had mine tuned a little the other day and got about 240rwhp, it was a 55deg intake temp day in the booth and I did the run with the bonnet down and boost at about 10psi. AFR's were left in the low 11's. 235 rwhp in mine got me the 13.3 @106mph previously. So my 235rwhp is more power than everyone else's 280rwhp (talking stock turbos). Sounds stupid doesn't it? Yep dyno comparisons have just entered the special olympics as an event.

[riggaP]

rev210

:werd:

I know lots of people who are gonna walk away with a gold medal

[cameron]

the runs we did with 184kw and 162kw were all done with the bonnet down.

the quarter mile run we did with a slipping clutch was the last run of the night. we got a 60ft of 2.3 and 14.1 1/4 ET at 103mph TS.

that wasent launching because of wheelspin. it was more slow off the line and floor it....

what tires do you guys recomend to use to get better traction ? because we have heavy duty clutch and can launch it.