efi vs blow through
08-12-2012, 12:24 AM
#1
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efi vs blow through I am in the middle of my first turbo 5.3 build and I am starting to collect parts for my motor. My biggest problem is should I go with a blow through or a efi set up? I am new to efi of any kind. If efi a speed density tune or something else. I would like to run e85 also.
My set up
-10 feed line
-8 return line
À2000 pump
Boost ref regulator
Truck manifolds
S400 turbo t6 flange
243 heads
What would be better in the long run for ease of use and tuning. What would I need to run the efi as far as harness o2.censors computer.etc. any help would be greatly appreciated.
My set up
-10 feed line
-8 return line
À2000 pump
Boost ref regulator
Truck manifolds
S400 turbo t6 flange
243 heads
What would be better in the long run for ease of use and tuning. What would I need to run the efi as far as harness o2.censors computer.etc. any help would be greatly appreciated.
08-12-2012, 11:43 AM
#4
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I vote efi all the way. Theirs plus' and minus for both. Efi gives you a lot of control, reliablability and is simplistic once you understand it. It really depends on what your comfortable with though
08-12-2012, 11:58 AM
#5
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I would suggest efi as well. What are you putting this in? I got a painless wiring harness for mine super easy and even has a obo ii port and check engine light. Plug and play easy!! Then a PCM from just about any junkyard and boom ready to go.
08-12-2012, 03:03 PM
#7
9 Second Club
I am in the middle of my first turbo 5.3 build and I am starting to collect parts for my motor. My biggest problem is should I go with a blow through or a efi set up? I am new to efi of any kind. If efi a speed density tune or something else. I would like to run e85 also.
My set up
-10 feed line
-8 return line
À2000 pump
Boost ref regulator
Truck manifolds
S400 turbo t6 flange
243 heads
What would be better in the long run for ease of use and tuning. What would I need to run the efi as far as harness o2.censors computer.etc. any help would be greatly appreciated.
My set up
-10 feed line
-8 return line
À2000 pump
Boost ref regulator
Truck manifolds
S400 turbo t6 flange
243 heads
What would be better in the long run for ease of use and tuning. What would I need to run the efi as far as harness o2.censors computer.etc. any help would be greatly appreciated.
Who will be tuning it ? Will it be a single build and tune with few if any changes at a later date ?
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08-12-2012, 03:15 PM
#8
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Either straight line or speed inc.would be tuning the car when.it is done. I will want to have room to improve at a later date I just don't know how consistant or how reliable a blow through is
08-12-2012, 03:19 PM
#9
9 Second Club
Will efi be more flexible and easier tuned ? IMO yes it will. But it will add a little more complexity during the build.
A carb setup can be very very simple, and probably cheaper to build because of it.
08-12-2012, 06:13 PM
#11
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I run a blow through carb with E85 on my LTX.
I only switched because my wiring harness was ruined.
BUT...
I am happy with it. Its been great to me, and not having an intercooler and all the extra wiring really makes working on the car easy.
I only switched because my wiring harness was ruined.
BUT...
I am happy with it. Its been great to me, and not having an intercooler and all the extra wiring really makes working on the car easy.
08-12-2012, 06:34 PM
#12
TECH Apprentice
Another vote for efi here. Id suggest you learn to do your own tuning. Get efi live or a stand alone and be done with it.
A friend of mine went blow through 2 years ago and is on his 2nd carb trying to get it to run right and is constantly working on it, changing brpv's and jets, and buying an msd boost timing box, changing bonnets, and yada yada. He easily could have bought a holley hp efi setup by now.
Do blowthroughs work, yes but they seem to be hit or miss on running spot on outta the box. And i dont think they are any cheaper by the time you buy all the stuff to get them to work
08-12-2012, 06:44 PM
#13
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Ya I think I am gonna go efi. I just need to change fuel pump and regulator.
On that note the new holley dominator billet inline pump anyone have any reviews or use it?
On that note the new holley dominator billet inline pump anyone have any reviews or use it?
08-13-2012, 08:02 PM
#14
its all up to you. i went blow thru and will probably be running it from here on out. drive ability is great. never had a problem in that sense. its like anything else if you cheap out on the carb or dont convert one properly your going to have problems. i run a C&S and it has been great its been on 4 different setups and only needed little tuning form one to the other.
08-13-2012, 08:09 PM
#15
FormerVendor
That being said, I think people have found blow through setups to be similar if not slightly higher peak horsepower numbers, it's just not something I'm interested in working on.
08-13-2012, 09:15 PM
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I just plug in my laptop inside the vehicle, dont even need to pop the hood. Lol
Another vote for efi here. Id suggest you learn to do your own tuning. Get efi live or a stand alone and be done with it.
A friend of mine went blow through 2 years ago and is on his 2nd carb trying to get it to run right and is constantly working on it, changing brpv's and jets, and buying an msd boost timing box, changing bonnets, and yada yada. He easily could have bought a holley hp efi setup by now.
Do blowthroughs work, yes but they seem to be hit or miss on running spot on outta the box. And i dont think they are any cheaper by the time you buy all the stuff to get them to work
Another vote for efi here. Id suggest you learn to do your own tuning. Get efi live or a stand alone and be done with it.
A friend of mine went blow through 2 years ago and is on his 2nd carb trying to get it to run right and is constantly working on it, changing brpv's and jets, and buying an msd boost timing box, changing bonnets, and yada yada. He easily could have bought a holley hp efi setup by now.
Do blowthroughs work, yes but they seem to be hit or miss on running spot on outta the box. And i dont think they are any cheaper by the time you buy all the stuff to get them to work
On my C&S, I put it on the intake, changed jets twice, and i have been driving it for over a year with not a single issue.
not trying to steer the OP either way, im just chiming in with my experience.
