HKS2540 on rb25 ?'s

[Ed.williams5]

HKS2540 on rb25 ?'s

My current setup is a semi build rb25 with pistons/rods and a stock head.  I have an HKS2540 and running Nismo 555cc injectors.  I currently am making 313whp (233kw) and 254wtq @ 15psi. Doesn't this seem really low for the boost level? I will attach a dyno sheet and let you guys have a look but just feel like this is way off. 

[Ed.williams5]

[Dose Pipe Sutututu]

Don't want to make your day any worse.. but buy a new turbo

[Greekos]

get a new turbo +1

[Ed.williams5]

Nah no worries...that's why I'm posting here to find out, that's the turbo that came on the car. Do these have flow issues or something?

[Dose Pipe Sutututu]

Yes, they're a horrible turbo.

Get a Garrett GTX3071 or so.. or straight up go for an BW EFR

[Ed.williams5]

Hmm good to know...I'll see what I can do about replacing it

[Dose Pipe Sutututu]

do this, since you're in the US already.. would be cheap

http://www.full-race.com/store/turbos/borgwarner-efr/borgwarner-efr-7064-turbo.html

comes in T3 and bolts up, just need a new dump and a fancy looking intake

 

If you were in Australia I would just say go a Hypergear turbo, even their high flow turbos in stock housing and all will happily shit out a comfy ~270kW on normal fuel.

[Ed.williams5]

I'll check both out thanks for the info

[DRF72]

If you want to sell the turbo drop me a PM