255 intank pump

[xms]

My question is will a 255 intank pump be too much for the stock regulator and stock injector or will make it run bad?

 

[robbo185]

you will run rich if you dont bypass the j-tube

 

[xms]

you will run rich if you dont bypass the j-tube

I'm new at this, how do bypass the j tube?

 

[havocatl]

I'm running a Walbro 255. Stock injectors, Stock regulator. I can boost to 13 psi... i hite fuel cut around 14 psi.

The J-tube is not bypassed.

I get the occational backfire. Never see any black smoke. Been running the same spark plugs for 20k miles on my rebuilt motor. She still runs strong.

 

[shaeff]

it's good measure to bypass the J-tube, though. i'd be interested to see what kind of fuel pressure your car is running at with a wallypump and the J-tube still intact...

a quick search would have yeilded you this thread- (which also contains a picture of the J-tube)-

http://www.supramania.com/forums/showthread.php?t=22025&highlight=tube

-shaeff

 

[lagged]

i dont believe it my self, but i have heard stories of the stock FPR blowing up with a walbro pumping behind it...

 

[xms]

This forum rocks!!! I never get any response like this from thw supraforums thank you guys.

 

[drjonez]

My question is will a 255 intank pump be too much for the stock regulator and stock injector or will make it run bad?

it's possible, but it totally depends on the car. the best thing to do is slap it in and find out. FWIW, i sell walbros as well...

personally, i had a walbro overpower my stock FPR....