Hello all,
Lots of familiar faces here from M.net, RD and CR.net and lots of new ones. Anyways, I will be purchasing a greddy kit soon and now just gathering some parts for the install. Already got a sweet deal on a used J&S Ultra-Safeguard with dual monitor display (cheaper then Bipes!) and other misc and preventive maintenance stuff. After reading through the archives here it seems like the Walbro 190 in-line fuel pump is the way to go for replacing the stock unit (165K+ miles). Question is, I found a few sites but none of them have a 1990 miata listed as applicable. So is this the one I need?

http://shopping.lightningmotorsports...&cat=24&page=1
Please look at the PN carefully and tell me.

Next question: I want to upgrade/replace the bolts that came with the kit. Is that something I can pick up at Home Depot or do you guys know a place online?

OK, one more: A/F ratio. Is it THAT important to get a wide-band? The way I see it, when I take my car to get tuned, the guy will have a wide-band sensor to tune with. I have no desire to tune my car on the road. I realize the narrow-band is not as accurate, but is it fair to say, "It's good enough for my application"?

My application/goal is just 150-160rwp. Kit already has Jim pipes and IC, 1.8 injectors, Vortech FPR, Generic VTA BOV, relief cut on manifold. The J&S will take care of knocking and re-advancing. Now I'm just worried about fuel.

 

Get the 190lph HP (high pressure) variant.

use exhaust studs from the auto parts store, or from ATP turbo. I just replaced mine with ATP studs and copper locknuts.

[shameless plug]I have new Begi afpr for sale to replace that Vortech[/shameless]

 

Hey Koto, as long as it's under or around $150, i'm on a budget here (aren't we all).

Thanks for the pump clarification.

 

i'm using a 255... its a lot of fuel. i second the 190 depending on what you're looking to make.

 

Yep that is the right pump except make sure you get the F2000 etc part number...as in the HP variety of that pump for the extra 5 bucks. In the 1990 you have to cut the old funnel off on the fuel pickup harness as the 94-97 does not have the funnel attachment. Its simple and there are instructions and pictures how to do it. You can keep the funnel setup but its more work to install if you go that route.

 

No, it is not THAT important to get a WB. When you get the car tuned you will leave it at that same A/F ratio forever (until you up your boost, etc). I used my WB one day so far. I did a run with it, saw where my fuel was, changed some settings on my link and did one more run to see if it was where I wanted it. After that, I haven't given it a second glance (I don't even have a gauge on the thing). Your NB won't really do crap for you but you don't need it to once you are tuned. But to answer you question, No, it is not good enough for your application if you plan on trying to tune it yourself (sans WB).

 

installation instructions are in my projects link.

buy the 94-97 190HP (F20000141) with install kit.

 

Awesome. thanks guys.

Just called up Lightning and ordered it, $85 shipped to my door!

Braineack, nice DIY projects!!

 

flat green miata !

 

^Olive Drab :P

Side-1.jpg

 

i just laughed at your mirrors. sorry, they are too cute.