EFI systems
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Member
Joined: Oct 2003
Posts: 296
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From: Houston
Car: 1992 25th Ann. Z28
Engine: 5.7 TPI - Stock
Transmission: th700 r4
Axle/Gears: 3.23
EFI systems
Hey all. I am thinking about changing EFI systems...but I wasnt sure how emissions testing would be effected. Are there any systems out there I can swap to and still have a street legal car? Anything other than an LS1 swap?
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iTrader: (2)
Joined: Dec 2006
Posts: 5,538
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From: Hou. TX
Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: EFI systems
I have a carb on all of my cars, i dont worry about emissions, i just go under the table.
Senior Member

Joined: Jan 2006
Posts: 726
Likes: 1
From: League City, TX
Car: 90 Formula -- tot resto in progress
Engine: 350
Transmission: 700R4 w/ 2500 stall, by Owen @ ARD
Axle/Gears: 3.23 posi disc
Re: EFI systems
Should we assume the target is the '92 listed in the sig info?
How do you get emissions tested now? The procedure is vehicle
year dependent, not equipment dependent.
To that end, a good tune, and catalytic converter will usually pass.
Re-tuning should be an expected part of any such swap.
If you can't do that yourself, plan on finding/paying for that service.
As far as specific equipment like EGR, air pump, PCV valve, the
inspectors at lots of shops couldn't identify this stuff, if it jumped
off & bit their nose. But they can read the dyno/sniffer results.
Board member Denn-Shah works at a shop (on Lawndale), and
would be a straight-up guy for service/inspection help.
Good luck.
How do you get emissions tested now? The procedure is vehicle
year dependent, not equipment dependent.
To that end, a good tune, and catalytic converter will usually pass.
Re-tuning should be an expected part of any such swap.
If you can't do that yourself, plan on finding/paying for that service.
As far as specific equipment like EGR, air pump, PCV valve, the
inspectors at lots of shops couldn't identify this stuff, if it jumped
off & bit their nose. But they can read the dyno/sniffer results.
Board member Denn-Shah works at a shop (on Lawndale), and
would be a straight-up guy for service/inspection help.
Good luck.
Thread Starter
Member
Joined: Oct 2003
Posts: 296
Likes: 0
From: Houston
Car: 1992 25th Ann. Z28
Engine: 5.7 TPI - Stock
Transmission: th700 r4
Axle/Gears: 3.23
Re: EFI systems
My TPI in the 92 runs failry well I suppose...I dont have to change the EFI. The biggest prob I have with my car is passing emissions. The plenum on my car was cracked during porting...thats what I assume anyways....it was like that when I got it...its got some sort of epoxy that was used to repair it.
I could go for TPI upgrades but considering the cost of TPI upgrades and a totally new EFI system...I just need to weigh the cost and options and of course, presentation under the hood goes a long way. I have seen some nice setups with HSR and LS1 conversions but LS1 is just not a option. Too much expense and too much work than I am really willing to do.
I could go for TPI upgrades but considering the cost of TPI upgrades and a totally new EFI system...I just need to weigh the cost and options and of course, presentation under the hood goes a long way. I have seen some nice setups with HSR and LS1 conversions but LS1 is just not a option. Too much expense and too much work than I am really willing to do.
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Joined: Nov 2002
Posts: 2,007
Likes: 8
From: North of Houston
Car: '82 Camaro 11.7@121
Engine: 377
Transmission: 400
Axle/Gears: Dana 44 / 3.31:1
Re: EFI systems
If you don't have other upgrades in the works, I would first look at stock replacement/repair of whatever parts are bad. A cracked plenum can be welded (it is aluminum) or you can find a replacement for $50.00 easy.
If you really want to go with an after market manifold, the HSR is probably a good bet.
But if the problem is not a cracked and leaky part, no manifold swap will fix it.
Sounds to me like what you need to do is make sure what the problem is first.
If you really want to go with an after market manifold, the HSR is probably a good bet.
But if the problem is not a cracked and leaky part, no manifold swap will fix it.
Sounds to me like what you need to do is make sure what the problem is first.
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