Stagea Dyno Results

[Tangles]

nice Dunc, and woah for 300rwkw from a m35. nice

wont be touching my tune/engine setup for a while now, will be dropping in the rb26 once its built and then crack the 300mark

[Verms]

I've got a 1998 RS260 so the RB26DETT from a R33 GTR.

Put it on the dyno last weekend and it only pulled 110kws with 4psi boost?

I've just brought a power fc from japan and looking to get a Turbosmart E boost street.

What could be to problem before I put the parts on and tuned.

I would think it should have more power than that standard.

Thanks

Nick

[Dunc]

I've got a 1998 RS260 so the RB26DETT from a R33 GTR.

Put it on the dyno last weekend and it only pulled 110kws with 4psi boost?

I've just brought a power fc from japan and looking to get a Turbosmart E boost street.

What could be to problem before I put the parts on and tuned.

I would think it should have more power than that standard.

Thanks

Nick

I dont know much but Id say the 4psi of boost will be part of the problem, for sure. What were the AFRs? Could be running very rich too.

[Verms]

Well thats what i think. I cant understand why its running 4psi. It should be waste gate pressure.

I'm hoping to be over 200kwsatw once tuned and 10-14 psi on the standard turbos.

Anyone know what the R33 gtr turbos will run?

Nick

[BoostedBarge]

I think 10psi is standard. 14psi is about the max you want to run safely. I'm running 13psi on my 260RS and have 200kwatw. Perhaps you have a blocked cat or a boost leak or something like that. 4psi is less than actuator pressure I think.

[pistol-pete]

11psi is standard in a 33gtr.

[scotty nm35]

Impul ecu run just happened, much better than last time.. 173.5kw on the same dyno (we made a whopping 126 last time), and a stack more torque too!

A bit rich but more than liveable Dunc, I wonder if it is just running out of injector at max revs...

[Dunc]

A bit rich but more than liveable Dunc, I wonder if it is just running out of injector at max revs...

Knew there was something else I was meant to ask about next time.

What'd reckon my target AFR's should be? I'd assume at this point the only way to get it better leaner (aside from waiting for the Impul to self tune) is either emanage or an AFC?

[scotty nm35]

Knew there was something else I was meant to ask about next time.

What'd reckon my target AFR's should be? I'd assume at this point the only way to get it better leaner (aside from waiting for the Impul to self tune) is either emanage or an AFC?

Yep, dont bother with the AFC, Emanage is very good at what it does and will allow multiple maps (e85 hint hint) and self tuning with a wideband.

You should be aiming for flat 12afr at full throttle, right through the revs. You are safer than that so theres no issue (other than fuel consumption) but if you notice it leans back out to 12 at the end, im just not sure what caused it. The injectors should be good for over 220. Perhaps its the pump but I would say its just a weird tune. Looks like you picked up a good one there.

[andy65b]

Nice result Dunc.

Stock boost on your car is 12psi.. If you did the bypass on the boost solenoid you can have unlimited boost.

I think Craig has seen 24psi using my Impul ECU at the moment as there is no boost cut on this ECU.

Cheers

Andy

[Dunc]

Stock boost on your car is 12psi.. If you did the bypass on the boost solenoid you can have unlimited boost.

I think Craig has seen 24psi using my Impul ECU at the moment as there is no boost cut on this ECU.

Hrm weird, I did do the bypass. Manifold pressure graph looks like it maxed out at 15psi though last time I maxed out at less than 10 pounds though.

Edited September 16, 2010 by Dunc

[iamhe77]

Hrm weird, I did do the bypass. Manifold pressure graph looks like it maxed out at 15psi though last time I maxed out at less than 10 pounds though.

May have something to do with the exhaust? I know that Craig has 3" from the turbo back, so less restriction.

Can't remember what you have Dunc (is it just the group buy dump and stock exhaust?)

[Dunc]

May have something to do with the exhaust? I know that Craig has 3" from the turbo back, so less restriction.

Can't remember what you have Dunc (is it just the group buy dump and stock exhaust?)

ah good point. At the moment Ive got a stock dump, with a 2nd cat in the pipes, and a nismo adjustable exhaust muffler (which was set to sport for the run). Might need to give that new group buy dump some consideration.

Edited September 16, 2010 by Dunc

[andy65b]

ah good point. At the moment Ive got a stock dump, with a 2nd cat in the pipes, and a nismo adjustable exhaust muffler (which was set to sport for the run). Might need to give that new group buy dump some consideration.

Even if you don't touch the rest of your exhaust, change the dump pipe.

Certainly the biggest power boost when you do this. There is a massive cat in the middle of the stock dump that is soo restrictive.

On my car with the stock turbo I have seen 20psi when I did the bypass. Not for long as I don't thing the ceramic turbine will be happy for long even with a ball bearing core.

[iamhe77]

Even if you don't touch the rest of your exhaust, change the dump pipe.

Certainly the biggest power boost when you do this. There is a massive cat in the middle of the stock dump that is soo restrictive.

Cat in the stock dump is too restrictive?

Oh, you must be referring to this then

Yes Dunc. Change your sump pipe ASAP!

Either get in on the group buy unit or preferrably, talk to Scotty about one of his dump/front pipe units

[Daleo]

Even if you don't touch the rest of your exhaust, change the dump pipe.

Certainly the biggest power boost when you do this. There is a massive cat in the middle of the stock dump that is soo restrictive.

+ 1 million!

I can vouch for the difference it makes even with a standard exhaust. Spools up faster, accelerates harder, more responsive, nicer engine note, slightly better fuel economy, need any more reasons?

[Verms]

Does the RS260 have the same cat in the dump pipe?

[kidafa]

• 
• Splitfire Coil Packs
  
• FMIC 11psi
  
• SAFC II
  
• 2.5" Gutted Cat
  

• Same as above plus
  
• 3" Front Dump pipe
  
• SITC
  
• 3, 1/4" Cat back
  
• Reinforced intake pipe
  
• Boxed pod with CAI
  
• Grounding kit
  

• Same as above plus
  
• 3" Highflow cat
  
• MV Auto's stage 2 shift kit
  

• Same as above plus
  
• R32 GTR 5 Speed, HD fly wheel and clutch
  
• Denso Hi-flow fuel pump (stocker wasnt keeping up while being tuned today)
  
• 12psi allthough it has to be pulled out towards the top so it doesnt hit boost cut :-(
  

Not sure where to from here.... Im at the end of the road AFM and turbo, tapping boost cut every so often.

[pistol-pete]

nice stuff chris

[Dunc]

Good results there Chris. What dyno have you been running it on? In 4wd or 2wd?