you have to hardwire a 450 it pulls to many amps for stock wires.
you have to drill out the return make the hole bigger.
you should prob buy a fpr just to make sure i did.
and you will not make 400whp on a stock turbo and stock intercooler if i was you save up buy a intercooler at least. with full bolt ons you can make 375 to 400 if you have a special car haha. this is on e85 on pump you will make about 330

 

^pretty much what he said

 

ok so i decided that i am going to hard wire the pump and going to drill the hole out to 3/32

and i do have a fmic and i am going e85 so that 400 maybe do able

 

There really is no need to hardwire the pump. The stock wiring will give it enough juice to work just fine. Hardwiring it will just cause it to spin full speed all the time. This will cause your base fuel pressure to be even higher, and cause the pump to work harder and thus fail earlier.

 

IT will give it the power......... Like said above, the wires are not big enough to support the amp load, You will melt the wires if you do stock wires to a walbro 450. DO not put a walbro 450 in on stock wires you will melt your car down.

 

Stock does have a variable voltage (something like 7/12 or 9/12) built in but I do not believe the oem wiring gauge will support what the 450 will draw for an extended length of time. Had a friend that had no problems at all running a larger pump on his oem wiring (different car) for a couple years and then one day it caught fire.

Also, lots of cars run constant full voltage without issue or premature pump failure.

 

Not sure why you wouldn't just get an ASNU direct replacement 330 lph pump and keep the OEM wiring. You're not going to make 400 hp ever on the stock turbo by the way.....

 

Wasn't aware of that pump and also I would like to make as close as possible to that

 

I have a walbro 255 or 450 that I have. So I can install what ever would be best. I just picked up a aero motive fpr today. Do I need a aftermarket fuel rail with this fpr?

 

Bro I did 600 stock snail

 

haha with nos maybe not just all turbo

 

Leave it on stock wiring. There is no need to hardwire the pump. Your base pressure will be through the roof and it your pump will wear much quicker.

 

you guys are trying have this guys caught on fire dont you guys know any thing about to many amps on small wire IT goes up in flames hahahah

 

It does not make sense cause you don't know what your talking about.
Pump is fed power but with power comes amps amps make heat.
The stock pump only draws so many amps that pump draws sit more then stock

 

You can draw more amperage than the gauge of the wiring is designed to handle. The higher the fuel pressure the pump is fighting against or trying the maintain the more amperage it draws, so at higher base pressure or especially in boost you are drawing more amperage. Hence why hardwiring it you would use something like 10 GA with a 30A fuse especially for something like the 450 which will draw over 20A at times.

 

Okay that makes more sense

 

im going to hardwire the pump today and going to make the return line hole on the pump housing bigger or should i leave it the original size?

 

Personally wouldn't run a 450 on oem wiring but to each his own.

 

I'm not sure why people ask for recommendations and then do what they want anyway. Like has been stated before you don't need a walbro 450 pump to use e85 on the stock turbo. I have THE FASTEST stock turbo X on earth and I use a 255 walbro pump. The ASNU direct fit pump is more than enough for what you need