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IMPCO VS AIROD pros and cons 

 

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 Post subject: IMPCO VS AIROD pros and cons
Posted: Wed Apr 01, 2009 8:00 pm 
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Hey guys,

I have used both these kits and have found that my impco setup has lost about 10-15% power and responsiveness on petrol for some reason. I think its got to do with the mixer as it may restrict airflow but not 100% sure

So what are the Pro's and Cons of each unit as ive had both a feel there both a great unit, but i see the AIROD not loosing power on petrol as the variable mixer that sits inside the intake pipe.

Also my car is a EF XR6 and uses a impco 200 mixer and B2 converter

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Wed Apr 01, 2009 8:09 pm 
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im working on adapting a impco 425 to the I6....this is a great mixer that will easily outflow the airod...

only prob is its largish size....

would be interesting to compare the airod and 200 on a flowbench....

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Wed Apr 01, 2009 8:25 pm 
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Never seen a 425 mixer, you have any pictures of it???


Yeh i would also like to see the flow difference between the 2

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Wed Apr 01, 2009 8:32 pm 
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if u google images u will find heaps

they flow around 290hp which is about 40% better than the 200

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Wed Apr 01, 2009 8:37 pm 
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actually just looked up the specs

200 flows 276 CFM
425 flows 460 CFM (66% better!!)

225 flows 329 CFM

i reckon the 200 is just a fraction too small for a EF 4.0

the other thing is, the airod isnt even in production anymore, impco stuff is everywhere and relatively cheap..

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Wed Apr 01, 2009 10:03 pm 
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What u mean Airod isent in production anymore???

I saw a couple BA's getting fitted with Airod system 2 weeks ago

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Wed Apr 01, 2009 10:08 pm 
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airod dont make the variable mixers anymore....they obviously are still making other systems

have u got a airod variable mixer?

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Wed Apr 01, 2009 10:19 pm 
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i did have a Airod vairbale mixer setup in my previous EL but my current EF XR6 has a impco setup.

So there isent a Airod system for EF/EL's anymore???

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Sun Apr 05, 2009 9:07 pm 
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well im sold design wise on the airod variable mixer, so iv emailed the guys and with any luck they may have some still sitting around?

or if lucky i can score one at a wrecker...

well in any case iv just dynod my car on lpg/standard mixer ring so if i can get a hold of airod Variable mixer then after the next dyno i can pop up the results here.

anyone here having any luck getting ahold of one of these yet?
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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Sun Apr 05, 2009 9:39 pm 
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mixer ring setups are the biggest piece of crap design ever

a 40mm ring can only flow 40% of the std TB...I estimate that its only good for 200cfm

anything would be an improvement on this...

no body in their right mind would use one on a performance engine

airod not included

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Mon Apr 06, 2009 1:14 pm 
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gogetta wrote:
mixer ring setups are the biggest piece of crap design ever

a 40mm ring can only flow 40% of the std TB...I estimate that its only good for 200cfm

anything would be an improvement on this...

no body in their right mind would use one on a performance engine

airod not included


It seems i cannot get ahold of one :-(

Agreed with the above qoute

IF anyone knows where i can find one PLEASE TELL ME
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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Wed Apr 08, 2009 11:56 pm 
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the designe of the fixed mixer was never intended to be for a performance set up in the first place its was a system that was made to suport a positive feed convertor, as the comlpex convetor has the both the idle & sensitivity adjustents on them the ring had to be a given size for the convertor to see a signal for gas flow both @ idle, cruise & W.O.T, by changing the ring size also changed the signal to the convetor so a compermise was made to achive that, the variable mixer was devloped by MED not as a performance upgrade but a solution to supply gas flow & maintain the perfect signal to the convertor for the larger capacity engines, eg V8's & big six clyinder engine like the toyota landcrusiers, a larger internal diamiter was made with a sliding innersleeve just like an SU carbi, having fitted both positive & negative systems & there both good in there own rights I like the using positive set ups as a few people here already know & as for a forced set up I belive that a variable mixer modified & the right convertor will give you good results & without having to spend a huge amount of cash, or if you if you have the $$$ buy the GRA set up, better still go SGI plus theres more to lpg than just the mixers & convertor......

we always knock what we don't understand !
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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Thu Apr 09, 2009 12:40 am 
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well its all academic really unless u can tell us where we buy the variable ring mixer??

that leaves impco and GRA as the only performance option bar injection

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Thu Jan 28, 2010 5:17 pm 
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gogetta, did you ever manage to fit the 425 to tha falcon?

it could be done using a 4 barrell manifold, but then you may as well buy the GRA gear lol

 

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 Post subject: Re: IMPCO VS AIROD pros and cons
Posted: Fri Mar 05, 2010 10:39 pm 
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misk_one wrote:
gogetta, did you ever manage to fit the 425 to tha falcon?

it could be done using a 4 barrell manifold, but then you may as well buy the GRA gear lol


I have seen a 425 adapted to fit on a 4lt EL engine. The 225 really is too small for anything other than a stock engine that does shopping trolley duties only.

Cheers

ToranaGuy

 

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