Sorry but, Cams, head, alky and a bunch of boost is the only way to make those numbers or a turbo kit!.

 

My mistake....sorry.

 

Sorry again, overzealous keyboard style.

 

You should consider having your 20G-9-5 upgraded to LT specs. Invest in a Full Race manifold flanged for an external gate, and add Buschur's Race frontmount. Upgrade your stock injectors to at least 780's. Have your cylinderhead ported and polished. Plan on going with Revolvers or something equivalent with the upgraded valvetrain bits. Do the headstuds and rodbolts as minimal insurance. Go with a standalone tuned to the edge on C-16. Hold the power with a twin or triple disk. An AMS intake manifold and the HKS DL-II would help as well. And, don't forget a boost gauge that reads over 30#. This should get you into the ballpark.

 

On which type of dyno??Dynojet??

You will need a set of argressive cam,built head,EMS,reduce rotating mass(wheel,brake,clutch....) to archive ~460whp on DJ.

 

Good luck, and keep us posted.

 

i also have intercooler kit and pipes, car was tuned by dynoflash and he estimated bout 300whp without the 02 housing, and intercooler.. that was on tme turbo not 20g. so about 310whp with o2 and intercooler??! but thats just estimate...and also the 20g is ported and polished

 

Estimate? Put the car on a dyno.