Fuel Injection or Carbureted?

jtillery · January 12th, 2007, 09:22 AM

I need some advice on whether I should stay fuel injected or switch to carbureted. From my research on the forum so far it seems the general consensus is if you are running with EFI now, leave it that way. I am swapping the 5.0 and T5 from my 87 LX into a 92 LX that was originally a 4 cylinder automatic. To stay EFI I think I need to plan on swapping the entire wiring harness, and possibly the steering column and dash, since the 92 has airbags.

Until I bought the 92 I planned on staying fuel injected and bought parts to for it (mass air conversion, 70mm throttle body and egr spacer, BBK cold air intake, nitrous setup with throttle body plate). I also planned on getting a Trick Flow Stage 1 cam, and upgrading the heads/intake as soon as I could.

The car will be mainly driven on the street. It will not be a daily driver, just something to cruise in on nice days. I will also take it to the strip occasionally. The car will need to be emissions tested. For exhaust I have aftermarket shorty headers, BBK hi-flow cat h-pipe and Magnaflow cat-back system.

My main question is, do you think it would be worth the hassle to swap the wiring harness over, steering column, etc to stay with EFI? I have the complete car, so getting the parts would not be a problem. Our should I take the easy route, leave the 4 cylinder wiring in tact and just go carbed? Also, a main determining factor is what it will take for a carbed car to pass emissions testing.

Thanks

mdvaldosta · January 12th, 2007, 09:43 AM

Since you've got the entire car I'd keep it EFI, especially if emissions is a concern (which was the motivating factor for automakers moving to EFI cars in the first place).

ChrisJ · January 12th, 2007, 11:52 AM

Keep it EFI...

1slo5.0 · January 12th, 2007, 01:49 PM

Keep the EFI.

5-0stank · January 12th, 2007, 02:08 PM

EFI ftw!

Grimmy · January 12th, 2007, 03:14 PM

Yeah, i have a '65 coupe with a 302 and a 4bbl carb. I dream of efi. That route nets you better gas milage as well as the ability to pull more power out of the engine and adjust the computers maps for daily driving or racing.

jtillery · January 12th, 2007, 05:35 PM

Allright you guys convinced me. I was hoping you would say go carbed since that would be much easier. Although with as much work as this project will be, I don't want to cut corners. I will stick with the EFI.

G-Man · January 15th, 2007, 04:41 AM

I have done the conversion from 4cy to V8 and let me tell you it is a LOT EASIER to go Carb, because the wiring harness is a pain in the butt to get to and replace. However EFI will in most cases have a lot more power behind it. It mostly depends on how long you want to spend doing this, and for me after awhile I just got fruss. and went with a 4bbl.

January 12th, 2007, 09:22 AM	#1
jtillery Regular Join Date: Nov 2006 Location: Euclid, Ohio Posts: 122 iTrader: 0 reviews	Fuel Injection or Carbureted? I need some advice on whether I should stay fuel injected or switch to carbureted. From my research on the forum so far it seems the general consensus is if you are running with EFI now, leave it that way. I am swapping the 5.0 and T5 from my 87 LX into a 92 LX that was originally a 4 cylinder automatic. To stay EFI I think I need to plan on swapping the entire wiring harness, and possibly the steering column and dash, since the 92 has airbags. Until I bought the 92 I planned on staying fuel injected and bought parts to for it (mass air conversion, 70mm throttle body and egr spacer, BBK cold air intake, nitrous setup with throttle body plate). I also planned on getting a Trick Flow Stage 1 cam, and upgrading the heads/intake as soon as I could. The car will be mainly driven on the street. It will not be a daily driver, just something to cruise in on nice days. I will also take it to the strip occasionally. The car will need to be emissions tested. For exhaust I have aftermarket shorty headers, BBK hi-flow cat h-pipe and Magnaflow cat-back system. My main question is, do you think it would be worth the hassle to swap the wiring harness over, steering column, etc to stay with EFI? I have the complete car, so getting the parts would not be a problem. Our should I take the easy route, leave the 4 cylinder wiring in tact and just go carbed? Also, a main determining factor is what it will take for a carbed car to pass emissions testing. Thanks __________________ Current Mustangs: 2004 Cobra Convertible 1993 5.0 LX Hatchback 1992 5.0 LX Convertible

January 12th, 2007, 11:52 AM	#3
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 38,220 Blog Entries: 4 iTrader: 10 reviews	Keep it EFI... __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

January 12th, 2007, 01:49 PM	#4
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	Keep the EFI. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

January 12th, 2007, 02:08 PM	#5
5-0stank Enthusiast Join Date: Sep 2006 Location: emmaus, pa Posts: 508 iTrader: 0 reviews	EFI ftw! __________________ 1995 GT::Sold! Looking for another stang...

January 12th, 2007, 05:35 PM	#7
jtillery Regular Join Date: Nov 2006 Location: Euclid, Ohio Posts: 122 iTrader: 0 reviews	Allright you guys convinced me. I was hoping you would say go carbed since that would be much easier. Although with as much work as this project will be, I don't want to cut corners. I will stick with the EFI. __________________ Current Mustangs: 2004 Cobra Convertible 1993 5.0 LX Hatchback 1992 5.0 LX Convertible

January 12th, 2007, 09:43 AM	#2
mdvaldosta MM Fanatic 2002 Mustang GT 11.47@120.58 Join Date: Aug 2005 Location: Valdosta, GA Posts: 3,940 iTrader: 0 reviews	Since you've got the entire car I'd keep it EFI, especially if emissions is a concern (which was the motivating factor for automakers moving to EFI cars in the first place).

January 15th, 2007, 04:41 AM	#8
G-Man Newbie Join Date: Jan 2007 Location: West Mecca Posts: 27 iTrader: 0 reviews	I have done the conversion from 4cy to V8 and let me tell you it is a LOT EASIER to go Carb, because the wiring harness is a pain in the butt to get to and replace. However EFI will in most cases have a lot more power behind it. It mostly depends on how long you want to spend doing this, and for me after awhile I just got fruss. and went with a 4bbl.

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