Dyno results with HKS2530

[bbenny]

Ok well i finished installing my turbo the other night and got it on the dyno... here are the results.

The turbo is a HKS 2530, i was running 10psi boost for this run.

It seems i need a fuel cut defender, and really need to upgrade fuel pump and reg from the standard crap ones i got.

what will be the max power std injectors can push?

what do you think my car will make once ive changed pump and reg? (i am running a std computer with injectors, but havee installed an SAFCII) i dont want to fork out for a complete computer.

I know this turbo's efficiency range is something like 1.2bar - 1.5 or something. i would like to run around 1.1-1.2bar if possible with new pump and reg.

any suggestons, ideas or info to improve its current state would be great.

heres the print out.

[Ronin]

Definetly get a new fuel pump. Stock injectors are good for about 200-220rwkw depending on condition.

[GTS-t VSPEC]

Why did you stop the power-run before 6000rpm? Due to the AFR being way too lean? Why didn't you use the SAFC to richen it up?

My car with stock turbo and injectors made 296rwhp, so I'm sure you can push your injectors to a bit over 300rwhp. A bigger fuel pump and fuel reg will allow about 340rwhp no probs.

[R32-GTS]

It's a r32 paul , no way you can get 340hp at wheels on stock injectors. On stock injectors with extra fuel pressure most you will get is just over 300hp. There only 270cc injectors.

[red17]

Paul, yours does have 500 extra cc's to get there remember

bbenny: if youve got an SAFC then you should be able to tune that AFR graph to look a bit better, at the moment it looks like its leaning out toward dangerous at about 6krpm. However the RB20 ecu is very easily reprogrammed, and since your already paying for the dyno time, getting a remap by someone cluey shouldnt cost you too much.

Personally, if you dont plan on making too many changes to maps (like me:D), id sell the SAFC and let the ecu manage everything (probably cheaper and you get to change timing AND fuel maps).

Red17

[GTS-t VSPEC]

Sorry, didn't read it was a R32.

I agree with Red17, Those AFR's are very bad, way too lean. I'm sure it will make decent power once the SAFC is tuned, or you have a remapped chip.

The way the dyno graph was pointing I'd guess you'd get 300rwhp easily at 1bar:D

[bbenny]

i didnt stop it, it cuts out because its running too lean... i think it needs a fuel cut defender or something.

yeah i was hoping to make 300rwhp on stock injectors.

yeah i was contemplating whether to ditch the SAFC and chip it...

[GTS-t VSPEC]

It cut out by itself or did you back-off the run?

[bbenny]

no the engine completely cuts out... so when im driving on the road i have the foot planted and then at around 5500rpm it just cuts out as if i took my foot completely off. its very sudden. its pulling hard then all of a sudden NOTHING.

[GTS-t VSPEC]

Why the hell are you driving it in that condition? Do you want a blown engine?

Take it to a workshop and either get the SAFC tuned to safe AFR's or get it chipped.

[MM2death]

Holy crap man....look at those AFR's after 4000rpm. Definately get the fuel pump first...and then see how much improvement you get. Standard injectors should be ok for around 210rwkw or so. If i were you i wouldn't be driving over 4000rpm....that's asking for trouble.

Scott

[Guest RedLineGTR]

where are you getting it tuned???

[R32-GTS]

I put money on it been the fuel pump . Mine was the same.

Come into my work and grab a bosche 040 600hp internal.

Sounds like its hitting AFM cut as well which Glen at c-red can get rid of or lucas at speedworks. Don't put a shitty fuel cut defender on it when u can just program it out of the computer.

[DoughBoy]

Good to see you got it installed... happy with it so far?

[bbenny]

haha dont worry im not driving it above 4000rpm and ive dropped the boost to std! thanks for the concern guys.

yeah i think i will get the computer tuned.

Chris, im very happy with it so far... once i get the other problems sorted i think it will be shredding all those idiots in WRX's and commodores (even tho it already did, now just rubs it in a little more) hehe

[nissky]

Its the fuel pump!

I had similar 13.5 AFR under load when the fuel pump was dying...

I could see, with a gauge on fuel feed line, the rail pressure was dropping dramatically after 4500.

Upgrade the pump, its easy to do yourself on r32.

fuel pump upgrade link

(You make more power when its running lean like that...well until

it goes BANG anyway ;p)

I like the look of that graph though at only 10psi!

[nissky]

oh yeah, and toshi will sell you a remapped chip with fuel cut removed and mapped (timing and fuel) for bigger turbo

its not perfect though (only $160), as its not dynoed to your particular car but better than stock chip, you could still use the safc to fine tune it further (since you already got it)

or sell safc and get a proper chip remap on a dyno

[GTS-t VSPEC]

Simon, Bbenny lives in Sydney, I doubt he'll drive to Perth to buy a fuel pump and get Lumpy to tune it:p

[bbenny]

Redline gtr: im not sure who will tune it at this stage. ive ben getting it the dyno runs at Procar - they are reasonable at $45 for a power run... and about $65 an hr to have A/F tuned...

gts-v-spec: yeah i was considering the drive there

yeah well ive already ordered pump and regulator so ill throw it in on monday night and get her back on the dyno and see what happens. if it still cuts out then im going to sell the SAFCII and chip it instead (bugger because i only put the SAFC in 2 days ago! gggrrrr) anyone interested in it? only about 2hrs use

thanks for the instalation info Nissky

Oh and does anyone know a good place in Sydney to have the ECU tuned?

[R31Nismoid]

just get a Big fuel pump... dont worry about the Reg just yet.

Just get bigger injectors to go with the pump. And leave it to the stock reg.

Dont get a bigger reg to squeeze the most outta the stock injectors. You wont get much more so its not worth the time.