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Bigger Injectors

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Old 11-20-02, 09:05 PM
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Bigger Injectors

Ok I am in the process of finishing up my swap from N/A to TII, I went with alot of aftermarket stuff so now im wondering when I take it in to my mechanic to have it wired up if I should have him install bigger injectors while hes in there?? and if I should what size?? I did the turbo swap the right way so EVERY thing is TII..drive line, tranny the whole 9 yards. Here are the mods to my car:

no airpump
3" downpipe
3" mid pipe
3" single side catback
BOV
Aluminum TID
HKS cone filter
16" electric fan
Profec A boost controler
HKS F-CON

I think thats all that would really matter. I am also thinking about ditching the TII fuel pump for a walbro. oh the car is a series4 So what does every one here suggest????? please help! Ive spent so much time on this thing I dont want it to blow up on me!!
Old 11-20-02, 09:22 PM
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whoa... did you happen to port the wastegate?? that will probably hit 15psi if not. you will defenatly need bigger injectors. bigger pump is also a must.

also the profect A will not work in your car.
Old 11-20-02, 09:47 PM
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Why wont the profecA work in my car?

and what size injectors do you suggest in my car? thats what im trying to figure out.

also my girlfriends dad owns a machine shop so I am going to have him do work to the wastegate and also do the flaper door like the thread in here tells you

Oh yeah my car also has a knightsports FCD

Last edited by ECKO1980; 11-20-02 at 09:51 PM.
Old 11-20-02, 09:48 PM
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you can't set the learning mode if you have any boost creep. untill it goes through that mode, you can't use it.

it'll only work with external wastegates or stock cars...
Old 11-20-02, 09:58 PM
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Its not on the car right now, I figured I wouldnt need it any away with the mods I will be running.

Buuuut do you think it will work with my car after I port the waste gate?? with the porting will I still have bad boost creep?
Old 11-20-02, 11:49 PM
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you can buy some 720cc secondary injectors from the rx7store. I think they're made by Greddy and they're drop-in, won't require a new fuel rail. With 720cc and a walbro pump, you'll probably need fuel management like a S-AFC.

You're running almost the same setup i am.
Old 11-21-02, 12:17 AM
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Originally posted by KenshinFC
you can buy some 720cc secondary injectors from the rx7store. I think they're made by Greddy and they're drop-in, won't require a new fuel rail. With 720cc and a walbro pump, you'll probably need fuel management like a S-AFC.

You're running almost the same setup i am.
Just curious what is your setup?? and you dont think the F-Con will work for fuel management? in your oppnion should I like sell it on e-bay and get a S-AFC??
Old 11-21-02, 12:22 AM
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I believe the f-con will work, just not too many people have experience with them on here. Get some 720cc injectors for your secondaries and a walbro pump and port the hell out of your wastegate. Sell the profec A for as much as you can and buy a profec B.
Old 11-21-02, 01:01 AM
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i bought the profec-a off a friend for $200 so im sure I can get that back out of it.

How easy to tune it the S-AFC???
Old 11-21-02, 01:11 AM
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The s-afc is incredibly simple to use. Still need to get on a dyno with a wideband O2 sensor to tune it correctly, but thats the same when tuning with anything.
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