what do you guys think about K&N filters on the uno and possibly a loud exhaust?

Supersprint, Ansa and OMP all make backboxes specifically for the 1.1.

I had an Ansa on my old Uno and i loved it!

Im not sure about k&n filters and induction kits, maybe the GSR will fit on with it being a 1.1. (Theyre designed for the cinq sporting and they have a 1.1 engine)

http://www.gsrengineering.com/engineering/pages/articles/fiat/fiat_fire_gsrinduction.html

Trav 1.1uno said:

what do you guys think about K&N filters on the uno and possibly a loud exhaust?

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Loud exhausts just for the sake of being loud is a bit 'Chav'! A free flow exhaust is ok, but don't expect much in the way of a power gain.

Much the same with a K&N filter. They sound nicer, but you aren't going to increase power noticeably.

I have a K&N fitted to my Uno. Was given it (thanks Louie ) so have no idea how much it costs to buy new.

It gives a nice induction noise, and makes the throttle response a bit crisper, but the engine still performs much the same. Biggest advantage is making the engine bay less cluttered and looks nicer than the original airbox.

However, as the carburetor Unos are known for carb icing, come October it's coming off and the original airbox will back on for the winter months.

Here's a picture of mine:

you can get better than k&n

you dont seem to have a cold air feed to the K&N?put one on for the summer and remove it for the winter,hopefully avoiding carb icing

i have a K&N panel filter in my i.e and its does make it sound better and give a better sound to the engine.... Vroom VROOM

a GSR wont fit an uno TB. (wont fit a carb altogether so dont bother). the bob is a little too big for the uno TB (talking 999cc injection though).. only by a few mill and all the holes are out of place to bolt it on.. with a custom bob you could defo get one to fit. the fire unit is the same as the cinq unit. as with all fires

K&N's are for noise only really, if you really want a noticeable gain youll need a BMC CDA or something, if they make those for unos, they probably will fit.

I was under the impression that Induction kits increased ware to the Air mass meter??

Lora x

yeah they just let more air into the engine and proper ones do it with a pressure difference or something that rams more air into the engine that the ecu then matches with more fuel=better performance, thats my crappy understanding of it anyway.

Also engines like cold air so most induction kits benefit from the breather hose which again helps performance over the standard air boxes.

a little more to it than them likeing cold air cold air holds more oxygen per cubic cm than hot air. thus the air you get in will provide more oxygen and allow for more fuel to be added to the mix and so more power

custard boy said:

a little more to it than them likeing cold air cold air holds more oxygen per cubic cm than hot air. thus the air you get in will provide more oxygen and allow for more fuel to be added to the mix and so more power

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I did say crappy lol

custard boy said:

you dont seem to have a cold air feed to the K&N?put one on for the summer and remove it for the winter,hopefully avoiding carb icing

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Nope, I don't. The main reason I fitted the K&N is to make the engine bay less cluttered, so the last thing I wanted to do was clutter it up again!

Also, unless a cold air feed is located in a direct air stream at the front of the car where air can be rammed through, they don't really work. The original airbox is sealed, and the cold air pipe to airbox gets cold air by the suction process caused by the carburetor/ throttle body.

Think of it like the pipe going to a vacuum cleaner. If you disconnect the pipe from the vacuum cleaner and hold it a few inches away from the suction hole, very little air will be drawn in through the pipe as the vacuum process will have been lost.

Therefore, unless you fit a pipe that gets air rammed in, very little air will reach the aftermarket air filter. Air will be drawn in from all around the filter, and the 'cold' air pipe in front of it will have little suction effect acting on it.

And also, if the pipe IS fitted so it rams air in, then that means everything else will get rammed in as well. That includes rain, leaves, insects and dirt, which will soon block up a nice new filter and make an engine bay very dirty...

The best way is to run a sealed intake tube from the top of the carburetor/ throttle body to the furthest point in the engine bay, normally behind a headlight, and fit the filter to the end of the tube here. A look in a lot of modern cars and you will see that this is what a lot of manufacturers do these days.

As the area behind the headlight is not in the direct air stream of the radiator, nor near a hot engine, the filter will draw in colder air without the risk of getting wet or dirty.

Mine is pretty much for show, and I'm under no delusions that I'm getting more power! It does sound nice, and it does make the throttle response a little crisper too.

Anyway, in about a month when the weather turns chilly I'll be fitting my original airbox because it's coming up to carb icing weather!

Just to chuck my 2p worth in....
Loud for the sake of it is OK as long as the car looks good when everyone turns there head to see what all the noise is!
as for air filters, in all the years i have been playing with cars just about every car i have had has been fitted with a K+N/induction kit or somthing the same and i have never had a problem with carb iceing.
also, you will get zip power gain unless you increase the amount of fuel going into the engine and once the fuel is in there you have to get to burn.
so airfilter and extra fuel isnt worth much unless you can compress the fuel and burn it afterwards.
so 99% of people with airfilters are only getting a "diffrent sound" anyway no matter what they think!

Dan

Mad-Dan said:

Just to chuck my 2p worth in....
Loud for the sake of it is OK as long as the car looks good when everyone turns there head to see what all the noise is!
as for air filters, in all the years i have been playing with cars just about every car i have had has been fitted with a K+N/induction kit or somthing the same and i have never had a problem with carb iceing.
also, you will get zip power gain unless you increase the amount of fuel going into the engine and once the fuel is in there you have to get to burn.
so airfilter and extra fuel isnt worth much unless you can compress the fuel and burn it afterwards.
so 99% of people with airfilters are only getting a "diffrent sound" anyway no matter what they think!

Dan

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My problem with 'loud' exhausts is that they're normally fitted to some Chavved Up Nova/ Corsa/ Saxo and driven badly by a dork, so loud exhausts tend to equal "dickhead" to me

A REAL loud exhaust, or at least once that sounds impressive is something like a TVR. No four pot, whatever you do to it, will ever sound as good as a V8

Very true that just sticking on a K&N will not improve power. In the old days when filters were much more restrictive, a free flow filter could well liberate a few ponies. But modern day engines are much more efficient, and the change isn't likely to be noticed on a rolling road.

Saying that, with modern ECU's, the more air that goes in the more the computer will compensate by richening the mixture (up to a point), so in theory a very small gain could be had.

However, the induction side is just ONE part of the combustion process, so unless everything else in the engine has been modified to suit then things like exhausts, valves, port sizes, catalytic converters etc. will continue to restrict the engine from breathing more. Then of course, a lot of ECU's will do all sorts of trickery to keep the engine only running at the manufacturers settings.

As for carburetor icing, I've had this many times...

The carburetored FIRE engined Uno's seem to be prone to it, perhaps the jets in the Weber 32 TLF carburetor are very small and get blocked? My first 45 used to ice up all the time between October and April until I realised the hot air flap in the airbox wasn't working.

I even had carburetor icing when I lived over in Florida, I kid you not! I was driving a big old 1977 Buick 5.7 litre V8, that had this massive four barrel carburetor (Rochester Quadrajet). I thought that being in warm Florida I could chuck away the original airfilter that was about the size of a dustbin lid, and replace it with one of those fancy chrome pancake filters. This had no provision for the hot air pipe, so I chucked that away too.

In the middle of January, the temperature got unseasonably cold for Miami, and I had to drive 300 miles to the Tampa area. When the night drew in, the temperature was getting very close to freezing, probably about 3-4 degrees as it was only 9 degrees at midday!

I'd got about 200 miles into my journey, when next thing I knew the Buick was misfiring, losing power and running like a dog. As the engine had already blown up once in my ownership and I had to rebuild it, I thought I'd blown it up again.

Pulling into a 'gas' station I checked the engine and could see nothing amiss other than it was running really roughly and refused to tick over. Putting my hand on the carb body I could feel it was ice cold, so I left it ticking over for about 5 minutes (it probably consumed 3 gallons of fuel just doing that!) and it suddenly cleared itself up!

It did it a couple of more times before I got to Tampa, but when I returned back to Miami a couple of days later and the weather had warmed up the problem never came back.

So yes, carburetor icing can occur as I know only too well. That's why come October my fancy K&N is coming off and the original air box with hot air pipe is going back on.

And I agree, I don't get any more power with the K&N, but I do get a crisper throttle, a nice induction noise and it makes my engine bay look nicer