Walbro on a NA?
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Joined: Jun 2003
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From: Las Vegas
Walbro on a NA?
I have a 90 convertible with a K&N cone air filter RB header and a Mazdatrix high flow cat. Would there be a benefit to adding a Walbro fuel pump to the car at this time?
Where's My Fuel???
Joined: Jun 2002
Posts: 473
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From: NJ
no, but a safc + dyno tuning would give you a lil more power... not too much, but every lil bit counts 
i think the stock fuel system is fine for up to 250 fwhp or something like that
also, get a cold air box around that cone filter if you dont have one, that will help too
i think the stock fuel system is fine for up to 250 fwhp or something like that
also, get a cold air box around that cone filter if you dont have one, that will help too
Ready to Rock
Joined: Jun 2002
Posts: 729
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From: Bergen County, NJ
NAs run rich as it is, no sense in upgrading the fuel system unless you're running some serious mods/porting. As vectorminds said, a tuned SAFC (to lean it out most likely) would net you some more power.
I had purchased a Walbro hi flow for my na awhile back. Fortunately for me, I had not Installed It (I realized I didn't need It) but with my upcoming TII conversion, now Is a better time than any to drop It In.
I don't think you need one based on your mods, not by far.
I don't think you need one based on your mods, not by far.
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Joined: Jul 2003
Posts: 97
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From: Albany, NY
http://www.teamfc3s.org/forum/showth...ghlight=gtuspa
I tend to believe this guy considering he does I think 13.07 in the 1/4 with a N/A. So I guess it all depends what you have done to the car
Originally posted by GTUsPA
Guys, do not be surprised if 1/4 mile your car doesn't go as fast or faster with a header.
On my 2 friends cars that was the case. With the opened up exhaust they went the same time or actually a little slower. The plugs were really lean, so one put TII sec injectors in w/TII fuel pump and the other went with a Walbro and 720's in secs.
TII setup with header showed a 6/10's increase, while the 720/walbro setup 9/10's increase.
In drag racing those are huge gains, guys spend thousands to get a few tenths shaved off their 1/4 times.
My kids car ran faster with header & w/o injector/pump mods installed 3/10's but her motor had a mild street port.
Guys, do not be surprised if 1/4 mile your car doesn't go as fast or faster with a header.
On my 2 friends cars that was the case. With the opened up exhaust they went the same time or actually a little slower. The plugs were really lean, so one put TII sec injectors in w/TII fuel pump and the other went with a Walbro and 720's in secs.
TII setup with header showed a 6/10's increase, while the 720/walbro setup 9/10's increase.
In drag racing those are huge gains, guys spend thousands to get a few tenths shaved off their 1/4 times.
My kids car ran faster with header & w/o injector/pump mods installed 3/10's but her motor had a mild street port.
Last edited by Novacaine; Aug 1, 2003 at 01:17 PM.
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