Is ~400whp realistic with this?

**BongRips** · 08-23-2011, 06:33 AM

Ok so I am in the works of upgrading my car and am making a list for spring. Would I be able to make around 400whp off my rb20 fairly safely with the following mods?
•aftermarket low mount turbo manifold
•ws-0448b turbo (rated at 440hp and I know a couple ppl making 350-400whp off them on rb20s and 25s)
•divorced dump pipe
•3" dump pipe and decat
•3.5" catback
•fmic
•front facing plenum with 90mm throttle body
•550cc deastchwerks injectors
•300lph deastchwerks fuel pump
•haltech platinum pro ecu
•stage 2 clutch

I'm pretty sure that's everything I have written down so far for related mods. Some I have, some is installed and some I have yet to purchase, but back to my question, will my engine make a fairly reliable 400hp with that?

**Shane_H** · 08-23-2011, 06:50 AM

in before Mike Kwon (M13) answers everything you need to know.

**BongRips** · 08-23-2011, 07:25 AM

how did you hook up your temp sensor in your autobahn 88 decat? I got the same thing and it seems like the hole in it is way larger than the screw on the temp sensor

**TheyKilledKenny** · 08-23-2011, 07:31 AM

I'd upgrade your oil pump, and maybe your water pump aswell. Oil cooler is good if your gonna track it. Bigger radiator wouldn't hurt.

**Supraclean** · 08-23-2011, 09:27 AM

Personally I would go with a stage 3 clutch, and you will also need a FPR sir.

**trickey1991** · 08-23-2011, 10:27 AM

ull make 400whp..but it wont be reliable..my tuner told me 400 whp on a 20 with no internal work..is unreliable..im shooting for 350whp..

**Bignoga** · 08-23-2011, 10:51 AM

Im pretty sure this is a GTR not gtst. You should make your 400 no problem

**r33_gtst** · 08-23-2011, 12:12 PM

Originally Posted by Bignoga

Im pretty sure this is a GTR not gtst. You should make your 400 no problem

It's an RB20, not RB26

**rak123** · 08-23-2011, 12:49 PM

If u want to make 400hp out of your rb20 your gonna need a generous amount of boost and If your running 14+psi u will need a metal head gasket and arp head studs to prevent head lift and your head gasket blowing out.