Power Expected in RB20

[Waldo]

hey guys i just wanna know how much power you think my rb20 will have with all these mods:

Hiflowed RB20 turbo

Bosch 040

HKS Front Mount

3.5inch Exhaust with apexi N1 catback

CAI with heat sheilded pod

14psi but want to get it tuned for 18psi

Splitfire coilpacks

Tomei Cams

Apexi Power FC

GTR Injectors 444cc

what would you guys expect from 14psi and 18psi with these mods???

[jazza08]

14psi... 240-250rwhp

18psi... 250-260rwhp (+ or - 10rwhp)?

Wouldnt be as much difference in the to boost levels as that turbo wouldnt be able to stretch too much further i dont think??

You should have a very nice mid-range with the cams and once its tuned up though!!

[Waldo]

ok cool...i thought i would be on about that range...but i really would have loved to reach 300rwhp, what turbocharger would be recommended to reach that horsepower

[jazza08]

HKS GT25/30 will get you 300rwhp but wont go much past that. Good responce too.

Rb25 turbo with the GCG 450hp hi-flow will get you 300+rwhp

Theres a few other ones, Blitz or Trust etc but im not too familar with them.

Those are your best options

[Waldo]

whats the differance between the rb25 high flowed and the rb20 high flowed?? wouldnt they just be the same thing once high flowed....like i didnt get the high flowed done (my mate the previous owner did) and it cost him $1650 to get done and i dont know what HP rating it was.

[jazza08]

Not 100% on that, i think the rb25 turbos housing is the same as rb20 turbos so once hi-flowed the rb20 turbo maybe more like an rb25 or even a hi-flowed rb25 turbo (dependin on extend of hi-flow)!

Most hi-flows aren't to the extent the GCG 450hp re-build from what ive seen so far!

[Waldo]

well i know mine was done at APC in brisbane, which im am pretty sure they send the turbo to gcg anyways. Because they have gcg brochures and banners everywhere so i guess they use them for something to do with turbos

[jazza08]

Well if its the 450hp rebuilt turbo then ur looking 300rwhp on 1 bar boost if ur engines in good nick!!!

Especially with ur cams and a good tune, you maybe able to crack 310-320rwhp again dependin on ur engines condition and if ur happy to run 18psi through it all the time lol

[Waldo]

at the moment it running all those mods minus the cams and injectors...on a standard ecu and it runs perfect, but doesnt feel like its all the power she can produce so once i get the cams and injectors in and get the power fc tuned i am hoping to crack 300rwhp...im just waiting on delivery of my power fc from japan

[jazza08]

this shud be the waldo/jazza thread... lol

As i said if u got the 450hp GCG rebuild u shud go very close to that id think!

[Waldo]

ill just keep winding the boost up until it hits 300ponies lol

[jazza08]

Woot woot then im sure ull get there hehe

[grandmasterb]

  jazza08 said:

Woot woot then im sure ull get there hehe

being interesting to see what you get???

I have simialr mods and will be dynoing my car in the next few weeks, want 240rwk's so fingers crossed.

[RB power]

what would one need to do to get 300rwkw

Cheers

[Butler]

with a 450hp turbo i would hope u get to 300rwhp pretty easy! just dont expect too much below 4000 and be prepared for lots of 8000 limiter lurve!

[Waldo]

nah atm it hits full boost at 3900RPM hopefully with the cams in it should give it some midrange punch...

[tuyen]

with the setup u listed above.. a good tune will get u atleast 260! most probbaly more like 280 or something

because i have same setup but only with stock rb20 turbo and safc2.. and i got 235rwhp

[jazza08]

Do remember dyno figures are different for dyno's etc etc

But your car sounds pretty healthy dude

Black r32s... theres a few now but cant get enough of them, sexyyy

[grandmasterb]

  jazza08 said:

Do remember dyno figures are different for dyno's etc etc

But your car sounds pretty healthy dude

Black r32s... theres a few now but cant get enough of them, sexyyy

Yep, get it on the dyno, post up the graph and tell us how you went. There more RB2o's out there putting in good power out puts the better in my book, what an AWESOME engine :Pimp2:

Black R32's are sexy but there are a few getting around where i live at the moment.

[Sydneykid]

  Waldo said:

hey guys i just wanna know how much power you think my rb20 will have with all these mods:

Hiflowed RB20 turbo

Bosch 040

HKS Front Mount

3.5inch Exhaust with apexi N1 catback

CAI with heat sheilded pod

14psi but want to get it tuned for 18psi

Splitfire coilpacks

Tomei Cams

Apexi Power FC

GTR Injectors 444cc

what would you guys expect from 14psi and 18psi with these mods???

The old RB20DET in the R32GTST made 225 rwkw (302 rwhp) with a GCG ball bearing hi flow at 1.3 bar. It had over 1 bar at 3,250 rpm so it wasn't laggy. The only difference to what you have listed may be that it had a split dump and no cat (they are not on your list).