How Much Power You Can Get From A Standard Rb25det

[eugen_syd]

Hi all,

I read all sorts of stories about people modifying engines and getting some good results. I had my Line for 3 years now, I am an old guy with no life so I said WHAT THE HECK...LETS DO IT.

I went first trough installing my intercooler and single stage trubine booster. All was set up for 14 psi and I was doing around 161 kW at the wheels. After I blew 3 standard tubines I got sick of it so ... I bought an HKS kit, mainfold, T04E turbo and external wastegate. They have been installed by a friend of mine without any tuning, car was doing pretty good, felt pleanty of power, car felt different.

At the SAU Dyno day I found out that I was doing somthing like 190kW clean at the wheel. I never saw my boost gauge going over 7 psi and at that moment was hell on earth when the wastegate was opening.

I start to look around the net, I love e-bay and I found the stuff I tought would be good for me: Power FC + Commander+Boost Control Kit, SARD 550cc injectors, Ignition Coils, cam shaft gears, upgrade air flow meter, after market timing belt.

After that I looked on this forum and I find UNIGROUP, Yavuz and contacted him. He was realy kind and done most of the work for me. The project did not go that easy. Most of the work was done but, 2 major problems developed: pipes popping off at high boost and wstegate did not hold at high RPM. We found exhaust blocked and replaced exhaust but the problem still there. Car lunches incredible at low RPM and than my curve just flattens. I managed to reach only 220kW at the wheel. Yavuz told me to try to get a stronger spring for my wastegate but I don't know how easy is that. Is anyone out there which experienced something similar? I wish somebody would say go do that and all my problems fixed. Somebody with similar setup can tell me what power should I expect at this setup?

I added 2 attachemnts of my curves...before and after. Any good comments ar emore than wellcome...(pls no "smart" comments).

Did I left any stone unmoved or..there is more...except of course building an engine from scratch aftermarket....

Cheers,

EUG.

[paulr33]

hi eugen,

glad to hear all is going well and your having some good experiences. max power (safe) for stock internals is around 270rwkw ish.

any more and its doubting the safety.

max power (safe) for built engine with forged internals would be a bit over 350rwkw.

[N I B]

Maybe just the Ebay wastegate.Is the turbo a name brand or Ebay job.

If the Turbo is china job toss it out and get a Garrett etc and fit a good spring to the china wastegate(If it is) then retune,300rwkw is possible with a good tuner and thats one thing you do have.

[eugen_syd]

Hi Guys,

Thanks for quick reply. Turbo is a GENIUE HKS and included MAINFORLD..Garrett T04E and HKS wastegate. That was ceramic coated inside and outside and was properly done. Turbo works great....but I do not know spring setting in wastegate.

Cheers,

EUG.