Dyno Run Results

[2fardown]

Had my first dyno run on the R33 GTST done today. The results were a little dissapointing to say the least. This could be due to the fact that the dyno I went to reads low or my car needs an aftermarket computer.

Have a look at the dyno graphs and tell me what you think of it.

Only mods are:

3" Cat back exhaust

11psi boost (bleed valve)

K&N Panel filter in stock air box

[2fardown]

Second graph

[meggala]

I wouldnt be dissapointed tehre are alot of peopel posting optimistic dyno results the main thing is you use the same dyno to compare up grades.

its a pity you graph doesnt show your A/F ratios as this would show you how richyour car is running.

and s-afc is the best remedy if you dont plan huge mods as it makes the car more adjustable.

some dyno shops have to have optimistic results to keep people coming back the dyno that alot of us melbourne people reads fairly low but at least we compare against each other

meggala

[2fardown]

Thanks for the reply Meggala. He said it was 11-1 AF ratio...does that sound right? I may have it wrong.

Apart from all that, the car does seem to have heaps more power.

[GTS-t VSPEC]

Yeah, I agree with Meggala, it's not too bad a result. It look like you have some overfueling problems, but that is normal at higher boost. The other bump is the NVCS (variable cam timing).

I do a complete exhaust and FMIC.

See'ya:burnout:

[GTS-t VSPEC]

You need to see the A/F ratio's vs rpm, on the dyno sheet.

See'ya:burnout:

[macka]

It will read even worse when you redo it in 4th gear instead of third

3rd gear reads highter

[macka]

Originally posted by GTS-t VSPEC

You need to see the A/F ratio's vs rpm, on the dyno sheet.

See'ya:burnout:

No tuner i know can be bothered plotting RPM maybe tuners think its too hard.

Good luck with future endevours

[benm]

Im sorry but it sounds WAY low to me, with those sort of mods i'd be expecting around 155-160rwkw, but then again all dyno's are different they say.

[2fardown]

Originally posted by benm

Im sorry but it sounds WAY low to me, with those sort of mods i'd be expecting around 155-160rwkw, but then again all dyno's are different they say.

Yes I agree. Which is why I'll be getting a second dyno run in the near future after I get my injectors cleaned and a full service on a different dyno.

[lowlux]

lol 11.1 is nothing i got 9.8 to 1 HAHAHAHA

[Drivebai]

Consider yourself lucky i only got 124Kw and i have a pod filter, 3"catback, Bleed valve running 10psi, and an SAFC. i was quite disappointed but the guy said my car was mifiring up top. and he said if i regap or change my spark plugs i could prolly get an extra 10Kw or something, he also said the car sounded like a Jet which is not good as it means its restrictive...and he said from his experience it looks like the Cat is holding the car back.. But when i got my car complied i told them to put a Hi flow cat on.. but the guy that tuned my car said from his experience it looks just like a cheap crappy cat!!!.. THE BASTARDS!!!!

[Guest SupraChigga]

My first post here and not a Skyline owner:o

Anyway, I saw DriveBai's post (not trying to get flamed or anything), but if you go here you'll see my dyno figure's.

DriveBai, your dyno tuner is right it must be the cheap cat, have you replaced the cat to a hi-flow yet?

[benm]

I'm not real technical with dyno's or engines or anything but 1 thing i noticed is that on your dyno run it only got up to a speed of about 130km/h where as on mine (http://skylines.pnc.com.au/dyno-203rwkw.jpg) the speed got up to 180km/h in 4th gear.

Was your dyno run done in 3rd gear maybe? as all the dyno runs ive seen are in 4th gear at 180km/h.

Thats just my observation anyway.

[DREMEN]

Here is mine.....

edit -> mods:

- exhuast

- pod

- boost (9psi)

- plumback bov greddy tyre S

Going back to the dyno place on thurs to test the new TRUST FMIC and a new cold air induction setup.... :D

And new muffler that the EPA made me put on bastards!

[Ender]

I have noticed that many people say they assume their car has X rwkw or whatever ...they then go to the dyno and are dissappointed at the result. Most people over estimate their rwkw by a considerable margin...the car is still the same though, if it felt good to drive before the dyno run...it is still the same afterwards.

I have to say that dyno figures would have to be a very average indicator of on road performance...It is a great way to tune your engine but high rwkw does not by itself relate to a great drive.

I guess my point is dont be dissappointed in your car just because it shows some lower numbers than you expect.

[Guest SupraChigga]

yes i agree....only track times will tell

i have yet to make a trip to eastern creek dragway....even to spectate

[DREMEN]

I only use the dyno to compare mods.... its a tuning tool nothing more

[Gester]

Why are some dyno's only done upto 110Km/hr ? Surely if they went to 180kph it would higher?

[crooser]

most dyno power runs are taken to redline or close to it.

doing a run in 3rd will read higher than in 4th.

my guess is 3rd gear is chosen by some tuners for safety reasons.