if u wanted to upgrade your fuel pump, which would you do? i just tried searching and thats one of the FEW things i couldnt find much info about.

pros? cons?

need to change anything in the ecu? or the rest of the fuel system?

edit: i have a 90 gtu

 

walbro fuel pump...but i thought that n/a are already running rich straight from the factory, infact, leaning them out helps you in power. THen again, i don't know your mods.

 

not modded to much, just tyring to do some research

only reason i ask fd or TII, u can find a FD pump on here for $40

 

Keep it stock. There's no reason to change your pump unless you are running some radical porting (full bridge or peripheral). Your car already runs rich. Get an S-AFC and LEAN it out.

 

It's overkill on your NA.
But do check the voltage at the pump to ensure that the wiring & connectors are good.

 

:tup: thanks. like i said, the fuel pump was the one thing i couldnt find much info on. maybe i was searching wrong though...

 

Has anyone actually bought an S-AFC from like ebay or something? And how much should one pay for a used, and probably already tuned (for someone else's car) S-AFC? I'm afraid they're gonna be messed up, and I won't get my money back. Well, at least they don't run lean from the factory.....

 

You can usually pick up an S-AFC from the selling forums here. Prices are all over the place depending on if it's used or new.

One thing though, DO NOT use someone else's presets. There is a safe setting you can use for them until you can get it professionally tuned. If you use someone else's settings, it could be too rich, or worse, too lean for your setup. To get it tuned, go to a dyno with a wideband 02 sensor. Post in your regional forums to see if anyone close to you has someone they might recommend.

I've been digging around for one, but I have other things I need to fix before I put in an S-AFC.