just a question, why do you want 400hp in an MR2?
 
 

Now after reading all this, I probably wouldnt want that much. Maybe 300rwhp is closer to my liking. Dont have a definitve answer for that though, more so ego than anyhting else really to be honest.

What I'm trying to do is do small upgrades at a time, but make sure they'll still be compatible with my higher power goals. That way you don't have to spend too much at any one point, and it stays driveable for a longer period of time.
Ie I've upgraded the fuel pump and rail, which you can do just on their own and run like normal, but then you're ready to swap in bigger injectors when you get an ECU.
Have a water injection kit fitted. Planning on switching to a water to air intercooler, so will mount the heat exchanger and pump setup first before changing my cooler piping.
 
This is all irrelevant if you're doing a full ground up rebuild for massive power. But in that case I'd buy a spare block to build up separately and just drop in.

Don't get me wrong, We all want more power!
 
I was just wondering what the application would be for that 400hp and why it has to be the MR2..
 

sredze

Now after reading all this, I probably wouldnt want that much. Maybe 300rwhp is closer to my liking. Dont have a definitve answer for that though, more so ego than anyhting else really to be honest.

Because i just got it recently and i guess i want it be as quick as it looks because it looks damn fine. :D

Power is a like a drug...
Tune for response, so you can punch hard off the line and out of corners! :D

Go GT3071 with supporting mods then rebuild the motor when it pops.

All this talk of cost is........lol

What about the GTX versions? 
 

MR2QIK

Go GT3071 with supporting mods then rebuild the motor when it pops.

All this talk of cost is........lol

It'd make near the same power as a GT3076, but with slightly slower response than a comparable GT3071. More expensive than your run of the mill GT3071, but certainly an option if you want that little bit extra. To be more detailed with my recommendation:
 
Firstly, verify the condition of your motor (comp test etc). If ok, proceed to Phase 1 (join 1 & 2 if it's a tired motor to begin with). Make sure your gearbox synchros are still good too, since making lotsa power with a dodgy box is kinda silly. Make sure your radiator, coolant lines & everything else is good too (ie start with a good base).
 
Where you located? A few people here can recommend places (if Sydney, RaceSolutions in Penrith).
 
Phase 1:
GT3071 (or GTX) turbo (can use factory cast manifold with adaptor plate) - few sales in the States at the moment too
Cams (Kelford 264's come to mind) + matching valvesprings (mild porting of the cylinder head too if you can)
ARP head studs & MLS HG
Fuel system (pump, injectors, rail etc) - decide if you want/can go to E85/E-flex (dependant on availability in your area)
Intercooler - W2A OR trunk mount (don't bother with sidemounts if you want safe & sustainable power)
ECU - totally your choice here, but I'd recommend a Haltech Platinum (stay away from Wolf etc though - stick to what's proven to work)
Aftermarket intake manifold - RMR, RacerX etc (or custom)
Ignition - if running E85, you'd want stronger spark (M&W, NoddE's kit, MSD etc) - factory will be ok if running 98RON
Boost controller - again your preference here
CRW axle cages (or ATS)
Turbo back 3inch Exhaust (assume you already have one - but just in case)
 
Phase 2 (when engine dies or you have more money to burn):
Forged internals/bottom end
You have options here depending on block, displacement & compression ratio etc
For that turbo, you'll be ok with nice simple 3S block with 86.5mm pistons, 3S crank, Eagle rods etc (perfect rod ratio), but I'm sure if this day ever comes you'll post a thread/explore the options of a 2.1-2.3L motor with a 5S block.....lol

Should mention the "bolt on stage" since I just read your first post....lol
 
I wouldn't really recommend this stage if you decide your intention is to go a bit serious, but if you want something to get you by for a few years:
Complete 3-inch exhaust (turbo back)
Intercooler (if you stop at this stage then sidemount is ok)
Boost controller (max 16psi for the CT26)
Intake
 
You'll probably see only a 20-30rwkw gain @ that point. But it's an option.