Analyze My Dyno

[hanyou]

hey guys i went down to the JEM dyno day on yesterday heres my dyno sheet:

mods:

slide hi flow turbos

full exhaust

hks evc III @ 1bar boost

mines ecu

k&n hi flow panel

everything else is stock, what mods should i be looking at next? im after a street car with 300rwkw.

ive already got in mind a power fc, 600cc injectors and a bosch 040. would that do it? anything esle i could do to make it pick up quicker as its pretty laggy to me?

whats everyones recommendation? and how does the dyno look cuz all i know is its a tad laggy and i want abit more power .

thanks!

[paulr33]

how well is it tuned? being a mines ecu will suck the wang, you should get a programmable controller.

there is more top end to be had there as the afrs plummet to 10's thanks to the mines engineers.

if you had a stand alone or controllable ecu you could tweak that to hover near 12 afr and get some more power.

as a comparison we can see

http://www.skylinesaustralia.com/forums/in...st&id=85489

twin garrett 2560's which are the hks 2530 equiv, you can see it wakes up at 120kmh which is 4200rpm

yours doesnt seem to wake up until 5000rpm

another one

http://img181.imageshack.us/img181/5640/r3...yno0003abk9.jpg

twin hks gt-ss (with cams however)

you can see it ramps up quickly and has good midrange from 100km/h which is 3500rpm

your does seem laggy. what are the specs of the hiflow units ?

[R31Nismoid]

Your need management/injectors/cam gear before you can say that its a laggy setup.

Those 3 things and more boost... then that would be a good comparo.

For what you have there, its about right considering your missing key parts

[hanyou]

dont knwo the specific specs, all i know was it was slide (on the forum) hiflow turbos and using garrett gt2860-9 exhaust wheels.

i guess that would explain the lag?

[Strik3r]

edit: LOL i thought this was for a GTS-t. dont mind me im a twit

[R31Nismoid]

dont knwo the specific specs, all i know was it was slide (on the forum) hiflow turbos and using garrett gt2860-9 exhaust wheels.

i guess that would explain the lag?

seriously, get your mind off the lag. Its a null point at this stage

You dont have:

ECU

Cam Gears

Two key parts. I wouldnt bother looking much into it until you have these parts installed and the car tuned

[Risking]

^^^^^^

Exactly right.

2530's cam gears and a power FC.

The engine is built etc but at the time had stock cams.

I tunned it and it not very laggy at all considering the boost and how low it is (13psi)

The thing pulled like a train as you could tell by the flat power curve.

Thats an old set-up but similar to how yours could be with the right mods.

Got yourself a Power FC, cam gears and go from there.

BTW that graph belongs to the other GTR that was at the JEM day. Its mine.

Edited March 12, 2007 by Risking

[Slide]

GTRgeoff is making 316rwkw on his R33 GTR at 1 bar that SelectMaz (Wayne) tuned with the same set of our highflowed turbo's.

That should be a good indication on the power you are missing out on by not having a tunable ecu like a Power FC.

Fitted turbos over the last couple of days. The usual stuff like wrestling with Nissans fine piping engineering (and it sux, my design is better on the RB25DETT/26-30TT). I'll replace it all in a year or so.

A visible difference in the size of the compressors and turbines.

Didn't have time to sort out the boost control so on stock GTR33 high boost setup of just under 1bar she pulled 316rwkw with sard 700cc injectors and PFC on a 31 degree day. Pulls like a 13yo with a porno mag. The tuners at SelectMaz, Wayne and Drew were quite happy with the result, Drew getting quite carried away with the amount of torque on road and Wayne blown away by the tractive effort on the dyno.

I'm happy as well and looking forward to getting the rest of the potential out of them when I don't have another engine to build and tune before moving to Brisbane next Friday.

Thanks Aaron.

dont knwo the specific specs, all i know was it was slide (on the forum) hiflow turbos and using garrett gt2860-9 exhaust wheels.

i guess that would explain the lag?

The turbine is the Garrett T28 cropped race shaft with -5, -7, -9 compressor wheel.

I would have to search through the books to see which comp wheels were put in yours as we didnt have regular stock then if i remember correctly.

There is not too much difference between them.

[hanyou]

sweeet thanks, well those mods are the next on the list

thanks guys, oh and slide very happy with the turbos would recommend them to anyone, pull like a freight train when theyre on

[psybic]

LOL, whats with dyno sheets that start at like 4500rpm. Doesn't anyone care whats happening below that? I drive under 4500rpm quite frequently.

ECU and tune will make a big diff! I just got full boost about 1000rpm low by adding an ECU and tune... different engine... but still..

[Swiper the Fox]

Just by taking fuel out from 5500rpm onwards should see it come alive in the top end.

ive got a Power FC and hand controller for sale of you need it. PM me if you want it

[Thunderbolt]

The fact that you are running a k&n panel filter (I guess in an otherwise stock box?), would be restricting the top end a bit. I suspect if you got pod-filter and cold air induction, there would be a fair bit of power gain there, and the power wouldn't start flattening out as soon.

[hanyou]

id prefer to keep the stock box as i dont want any hassles with cops and defects lol.. as long as im close to the 300 mark im happy!. by the looks of it im gna have to save up abit!

[R31Nismoid]

The fact that you are running a k&n panel filter (I guess in an otherwise stock box?), would be restricting the top end a bit. I suspect if you got pod-filter and cold air induction, there would be a fair bit of power gain there, and the power wouldn't start flattening out as soon.

the GTR airbox is actually quite decent.

Having seen many a car rattle off over 350rwkw with the airbox, leads me to believe it cant be all bad

[hanyou]

would anyone know how far the injectors & fuel pump will go safely before needing a upgrade?

[r32woohoo]

Going from what ive read of sydneykid's posts

gtr injectors are 444cc = ~444hp in a 6 cylinder engine

[Risking]

Nothing wrong with the GTR air box besides the fact its a pain to work with. Ive also seen a few GTRs making 350 with it still fitted. power is not flattening off because of a restriction its flattening cause of the sheer ammount of fuel its swallowing!

GTR injectors will be fine for 300kw like his planning to run as will the MAF's

[hanyou]

cool ive already bought some cam gears.. so just a power fc is needed.. gains should be good from what ive read in this thread. thanks