Installing reley for fuel pump needed?
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Some people get by without it, some don't...

I would strongly recommend rewiring the pump, it's only a matter of time before it decides to shit itself

 

Consider a FB-340 from full blown. Solid. And I would recommend the relay kit too. You've gone so far w/ the S/C and injectors, so finish it properly. Then drive it!!

 

Will a walbro gss341 fit my car?
Do I have to buy connections or is it a bolt on fit?

 

I don't believe that pump is a straight drop-in replacement. The GSS342 is the correct Walbro replacement part.

 

Deatchswerks DW 200 (255lph) comes with a S2000 install kit. that's the one I purchased for s/c kit. Mechanic said no need for re-wire kit as this one doesn't draw as many amps as say a FB340 or Aero 340lph

 

I would highly recommend doing the re-wire as well as bigger pump 340lph. Do it once, do it right, the first time...

Btw I dont think you realize what your getting into...some supporting items to thing about:

- clutch
- rad
- oil cooler
- catch can
- full exhaust

Boost creates a ton of heat...doing the fuel system properly will let you upgrade in the future...

 

Deatchswerks 200 is better then walbro 255?I was I was leaning towards aero340, but had read that they fail. My car going to be SC on ap2 v2. Can someone clamp in and tell me with pump is better? I'm not go to upgrade to a return system keeping the stock fuel system with upgraded pump.

 

honestly it doesn't matter unless you are going to convert the system and run a return line. I'll eventually get a walbro 450 + return line system b.c I'm going to run e85.

 

Would Aero 340 be an over kill for stock fuel system?

 

What brand are you referring to? 340lph?