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Old 05-03-2004, 22:03   #1 (permalink)
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EFI vs. Carbie

I have found out forced induction would be too hard, now i am thinking of doing it up NA and have tripple carbies on my x-flow(xd alloyhead) or converting it to EFI and using 6 throttle bodies.

What would either of these cost about? im thinking around $2000

What would be better for performance, noise and ease of tune?

I was thinking EFI for performence and carbies for the noise and ease of tune(no computer to work with)

I know which one would be more fuel efficent..lol

Any thoughts?
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Old 05-04-2004, 00:20   #2 (permalink)
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Re: EFI vs. Carbie

At the end of the day tripple webbers or even dellortos would cost about as much as efi to install and setup correctly. Can you do any fabrication yourself?? If you cant efi will cost you a fortune. Also tripple efi tbs would be easier and make the same power with better driveability.
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Old 05-04-2004, 02:56   #3 (permalink)
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Re: EFI vs. Carbie

That's about the right budget for tripple carbs. I'd have to say tripple webers or delorto's would be the go for sound- have you heard a properly sorted E49 or XU1...HORN!!!!!
6 tbi setup would probably cost a bit more than $2K but I'd expect to go harder than tripple carbs.
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Old 05-04-2004, 03:12   #4 (permalink)
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Re: EFI vs. Carbie

Using a trplie weber manifold and EFI throttle bodies you would get the same sound as Webers...

EFI would probably set you back about 5 - 6k to get it set up initially, but then you wouldn't have to worry about tuning the mixtures and balance every weekend like you would have to do with the Webers.

Not too mention starting up on the cold mornings with Webers can be a pain in the backside.

You should be able to extract more bottom end torque and top end power out of EFI due to its inherent tunability.

If your planning on doing a cam / head change in the future EFI would make things a lot easier to retune without the need to buy more main jets, idle jets, air correctors and emulsion tubes. These parts alone cost a fortune when you're tuning Webers and looking for the most out of them.

I used to use Webers all the time when modifying / racing, now whenever possible I go for EFI.

Just my opinion....
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Old 05-04-2004, 08:45   #5 (permalink)
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Re: EFI vs. Carbie

Oh the nightmare of the dual throat side draft webers.. retune weekly alright!

Tho there is a solution to the cold start issue.. loose fitting inner venturies when cold.. they leak fuel so richer.. and swell when hot and seal up providing correct mixture. Used to have a dual set on the escort I had.. and they were so worn the venturies rattled when cold (not a design thing btw.. just worn).
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Old 05-04-2004, 19:27   #6 (permalink)
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Re: EFI vs. Carbie

Hmmmm... So the carbies would be cheaper then, how much power do youse reckon id be puttin out with tripple webbers, extracors, exhaust ,headwork and aggresive cam?

Converting my car to EFI shouldnt be that expensive all i have to do is find an EFI xf and swap the parts + tank over

I was looking at a redline manifold for tripple 45mm carbies and would tbs just bolt on or would i have to fabricate mounts

is there any EFI car that came with 45mm throttle bodies?, pref cheap ones
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Old 05-04-2004, 20:20   #7 (permalink)
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Re: EFI vs. Carbie

No i havent heard a E49 or an XU1... What do they sound like?

Would ram tubes ( velocity stacks, what ever u call em) make an any difference to sound or power on an EFI 6 tbs, i assume that these are essential also with a filter sock... hehe i almost posted this reply with a c instead of the s on sock, luckily i proof read huh...
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Old 05-04-2004, 20:28   #8 (permalink)
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Re: EFI vs. Carbie

Quote:
Originally Posted by Trendy
Hmmmm... So the carbies would be cheaper then, how much power do youse reckon id be puttin out with tripple webbers, extracors, exhaust ,headwork and aggresive cam?

Converting my car to EFI shouldnt be that expensive all i have to do is find an EFI xf and swap the parts + tank over

I was looking at a redline manifold for tripple 45mm carbies and would tbs just bolt on or would i have to fabricate mounts

is there any EFI car that came with 45mm throttle bodies?, pref cheap ones

You can get aftermarket throttle bodies that bolt straight on a Weber side draft manifold, not sure how much.

If you get all the work done propoerly, no reason why you shouldn't expect something in the 250kW + range, just depends how much you want tot spend and how radicla you want to go.
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Old 05-04-2004, 20:46   #9 (permalink)
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Re: EFI vs. Carbie

I've heard of XFLOW running 6TB's and a WOLF3D that made 200kw. Pretty decent. It'd make monster torque.
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Old 05-04-2004, 20:47   #10 (permalink)
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Re: EFI vs. Carbie

Not bad...not bad at all,

Hmmm, 250+Kws + -1400Kgs = FUN!!!

Be pretty expensive with the after market throttle bodies,

I saw an xe run 6 38mm tbs with 6 pipes for an inletmanifold (it made 140rwKws), would these be after market or off some 660cc engine or something
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