Just Got R33 From Tuners

[SKYHY]

just back from the tuners its like a new car just got a gt3076r installed running 16psi on low boost setting and 21psi on high boost settings. any one tell me what this dyno sheet is telling me. looks like at the top end its letting go. could this be cams?

i have all the supporting mods.

cheers

[Birnie]

Could be the clutch

Check my graph in the dyno thread (should still be on the most recent page)

I need a new clutch....after buying a brand new clutch already !

If it is your clutch, PM me b4 you buy a newie

[Birnie]

PS, i have no idea how or why Cams would give you jumpy power like that.

I really doubt that's what it is, and the power level (250) isn't anything that Cams would have a problem with.

I guess what i'm saying is that Cams could handle 2000rwkws as long as the engine and turbo were up to it.

The only reason you would change Cams is to improve power gains across the rev range etc....

Nothing wrong with standard though if you're punching more air in.

[tridentt150v]

All the supporting mods..........but hows your cat? It could be choking either on the intake or exhaust?

[SKYHY]

clutch has just been fitted about 1000k ago could it be the cat?

[UCD15R33]

cat are a big restictions if they are no working. I my self know that i got 290hp with a stuffed cat then after a new cat I ran a 336hp at 13psi soo. i would be checking your cat.

[Dale FZ1]

Two distinct dips but not shaky looking graph line.

I'd suspect 1-2 degrees of timing taken out to address knock. A look at your ignition map will soon tell.

The over 4000rpm results looks good, but what do you think about things under that engine speed? Looks a bit lazy to come on for you. This spec should be generally similar to The Mafia, and he's pulling 300kW out of 18psi + a much more linear looking curve throughout the range with the assistance of water/meth.

Edited September 29, 2007 by Dale FZ1

[zebra]

What size exhaust housing is on the turbo?

[EVL-R33]

whats your timing degrees tuned at? if you take out 1 - 2 degrees timing, you will get slightly better mid range power but less peak power..

[The Mafia]

Let us know the specs of the turbo - There is a little plate on the core with some numbers on it. Get them for us for a more closer analysis.

[Dale FZ1]

I'd suspect 1-2 degrees of timing taken out to address knock. A look at your ignition map will soon tell.

whats your timing degrees tuned at? if you take out 1 - 2 degrees timing, you will get slightly better mid range power but less peak power..

Previous posts by Murat, and the comment about "all supporting mods" indicates he has a PFC.

I'm suggesting it's in the spark mapping ie adjusting one or two specific cells in the map, not the base timing being adjusted by a degree or two

Could be wrong but that's where I'd look if there is a concern/query about the shape of the graph

Edited September 30, 2007 by Dale FZ1

[Birnie]

If you don't mind me asking, where did you get your clutch from?

I had a new clutch too, slipped, buying another

[Risking]

whats your timing degrees tuned at? if you take out 1 - 2 degrees timing, you will get slightly better mid range power but less peak power..

Explain to me how removing timing is going to improve his midrange???

Id really like to know!

It looks like the exhaust housing may be to small If its not retard to much in the topend.

What sort of timing is it running through the top?? and like others have suggested what exhaust housing are you using??

[SKYHY]

core number is 700382-5012

compressor housing is .60A/R

turbine housing is .82A/R internal wastegate

if that helps is there any one i can take the car too give me a hand with the problem?

money is no problem.

[SKYHY]

clutch is from repco its a xcedty (i think thats how you spell it) heavy duty clutch.

[The Mafia]

dude, thats the same turbo as me. (GT3037) I make 15psi by 3900rpm in second gear.

The bigger rear must give it a bit more lag hey?

Also, can you list your supporting mods?

I make just over 300rwkw at 18psi on this turbo.

[SKYHY]

dude, thats the same turbo as me. (GT3037) I make 15psi by 3900rpm in second gear.

The bigger rear must give it a bit more lag hey?

Also, can you list your supporting mods?

I make just over 300rwkw at 18psi on this turbo.

Engine management - PFC

Boost ran - 18psi

Turbo - Garrett GT3076r

Nismo 740cc injectors

Bosch 040 pump

Gready EBC Profec II

Z32 80mm Air Flow Meter

Hybrid Intercooler

3inch Exhaust turbo back

Splitfire Coil Packs

Stock Internals

no head work

Fuel pump

its not that bad i get about 15psi by 3800rpm its depends on the engine load at the time 5th gear its full boost by 3500

[The Mafia]

thats strange, as I have almost the same setup, but with a smaller turbo rear.

That wavey line looks dodgey. Are the AFR's staying safe while it is doing that? Is the fuel pump healthy? You'll need to test your pressures.

[SKYHY]

thats strange, as I have almost the same setup, but with a smaller turbo rear.

That wavey line looks dodgey. Are the AFR's staying safe while it is doing that? Is the fuel pump healthy? You'll need to test your pressures.

AFR are safe its is running rich because after about an hour of driving the back bumper has a light black color, fuel pump was installed about 3 months ago brand new, what i will check is the cat see if it is choking and do a pressure test, i know i should be getting abit more becuase i have read your 300kw advantage this is what i have built my car from. so im abit shocked.

anything else you reckon i can check out ?

[SKYHY]

i have notice one more thing with the car the idle is very high sits at about 900 to 1000 rpm, i tried to reset it to a lower figure but it still sits up at 900 to 1000 rpm could this be a connected problem?