How much power does a Performance Air Filter add? DYNO PROOF!

[@benjiiiii6181]

Its not all about the miles per hour Geoff, its the smiles per hour that matter! Brought back some memories this did 😂

[@billmmckelvie5188]

Geoff's gone all giddy over his extra 2 horses. The old boy racer is now looking for a tunnel to take it for a blast and surprise everyone that is not a Vee Dub or a Collapsed Beemer making the racket!

[@highflying82]

The flat spot will probably be heat soak where the engine bay was getting hot from idling and when u accelerate the open filter in the bay is sucking hot air .. make yourself some duct pipes from a grill to the filter so it has a direct cold air feed. Colder the air the bigger the bang .. also TESCO MOMENTUM HAS THE BEST OCTANE LEVELS WITH MINIMUM PRE IGNITION KNOCK .. best proven pump fuel for performance .. iridium plugs will help and get a distributer rotor arm without the spring that cuts rpm .. the springless rotor arm will allow more rpm for around a fiver ..get some mass airflow cleaner and clean the mass airflow sensor ..great channel been watching for around 6 months .. my daily go to vids 👍🏻👌

[@thePeterpumpkin68]

Yep! Tesco juice is the best! 99 octane, been using this for years. Great comment btw.

[@highflying82]

@@thePeterpumpkin68 I use momentum in my stage 2 tuned cooper makes a noticeable difference and is needed for the remap .. I expect a decent map on Geoffs fiesta would bring it to around 100hp

[@g0fvt]

Not sure if the Fiesta still had a rotor arm and distributor when this one was made, certainly 2005 ones had moved to twin coils and no distributor.

[@Sarah-mg3gg]

6:45 the engine roar gave me warm fuzzies. One of my favourite things about driving on fast roads, opening the throttle the whole way.

[@MattJBaugh]

Love seeing you relive your youth, this is basically what I wanted back in 2010, a Zetec Fiesta and a big air filter 😂 gave up as all the ones I looked at were rusty, and I thought arch rust meant an MOT fail... Amazing what you know at 18 😂 even though I've got much spicier cars now, I'd still have one in a heartbeat!

[@pigeonpoo1823]

Yup, it's why the puma (😭) and my Ka went the way of the dodo

[@HA05GER]

Exactly what I had in 2010 my first car even same colour

[@blxtothis]

Who would have thought that a bit of drain pipe with a table lamp shade would add all that extra power, wow!

[@matthewwiddows6319]

Remember a car coming in to friends garage not running right after changing air box for k&n filter, when we asked where was the airbox etc was, he said he had thrown it all away, along with the maf sensor.

[@IfInDoubt..]

I keep watching 11:07 - 11:20 over and over... I seriously need another. Those 1.25s are SO good

[@AnnieRed66]

I've got a set of K&Ns for my 1977 Kwak Z650, ready for when the big strip and rebuild gets done. K&Ns plus a Harris pipe...one of the best sounds, ever!

[@0161pumaste]

these were 75bhp new, so its spot on its the later shape ones after 2008 which were 82bhp

[@TylerB-k4z]

Hp an wheel horsepower are different are they not i thought u lost about 10% from a manual transmission

[@IfInDoubt..]

That sounds fucking incredible around 7:10. The memories flooding back!

[@AustinDouglas75]

2-3 HP gain without a TUNE

[@gabrielvieira6529]

If you find it nippy, wait ti'll you discover that in Brazil it had a 95HP 1.6L Zetec RoCam engine! The 1.0L had 65hp's. The Intakes are the best of all worlds, you get extra performance, you get extra noise (of the good kind) and you spend little! That Fiesta looks gorgeous!

[@thiscocks]

Same engine that was in the sport Ka I think

[@Faithinthedock]

This takes me back. We used to put K&N's on nearly everything I think. Mostly for the intake noise!! I'm not surprised by the flat spot. I remember way back this frequently happened when you just fitted the induction kit and no other mods. I think (and it's a faint guess here) its something to do with greater volume of air but initially slower velocity when you put your foot down so there is a touch of hesitancy.. Something like that. I have to say the 1.25 16v engine is little peach.. Wasn't it developed by Yamaha?

[@jackyli3542]

You have to fit larger main jets to stop the flat spot. It even increases mpg

[@stuartd9741]

Yes a co development between ford & Yamaha . If you listen carefully the fiesta sound a bit like a motorbike scream momentarily, when it's revving at the top end....

[@karynelaine2702]

Because I love your videos I'm now a previously uninterested car enthusiast watching car videos!!! My son put one of these in his car, now I have better understanding plus my son thinks I'm a tiny bit cooler..thanks Geoff!!!.......'conspiracy' and cars!!! Working it!!! Perfect combo!! like murder and make-up (Bailey Sarian!!)

[@Domman56]

Would love to see what a good tuneup does fuel injector cleaners change your fuel filters, oil change, transmission, and spark plugs see how much you gain just for maintenance

[@UncalBertExcretes]

Flat spot is probably because its just been installed and the ECU can't compensate enough you may have to get it mapped and slightly bigger fuel injectors. I think a sports cat and cat back stainless system with no mid silencer, just back box to be next, then get it mapped and running all nice.

[@timhicks2154]

I have got a K&N Filter in my Toyota Yaris. And a slightly fruity back silencer box. Goes well! MPG up with the less restrictive back box too. 50mpg.

[@SvenTheSveed]

What engine is yours bud?

[@tommytriglav5181]

Can you explain the back box a little?

[@timhicks2154]

@@SvenTheSveed - 1.0litre VVTI, 2003

[@timhicks2154]

@@tommytriglav5181 - I bought it off eBay just on spec. Very well made. Not loud but a distinctive note. I got fed up with rubbish quality aftermarket rear silencer boxes rusting out way too fast

[@dotherightthingbro]

Get a retest or/and get the dyno recalibrated because the K&N I had on my mk3 Escort definitely doubled its power. Just like the GKN spark plugs and the cherry bomb 😂

[@Gixie-R]

Had a K&N on my Golf VR6, Sounded great to start with but for the longer trips you need to make a bucket shroud for the filter.

[@stevenbrown2523]

Use good old redex and premium fuel up to the next test, and some Wynns oil supercharge to protect the old engine. Used both for years in many different cars never had any problems. Also quality multi electrode spark plugs. Good luck. 👍

[@gj91471]

Everything You have mentioned is Snake Oil.......

[@pauld7827]

I've just fitted one of those to my EV, wow! What a huge difference it made.... another 250 BHP! Seriously though, fitted a DNA air filter and inlet and removed the cat and collector box on my Royal Enfield Meteor. Apart from a noiser intake and a fantastic exhaust note, I didn't really notice any improvement in performance. Maybe, because of the EFI, it may be running lean at higher RPM's....

[@snaggletooth1351]

This was so classic and the the sly grin absolutely priceless best quid spent absolutely 😂

[@paulwilson3154]

Listening through headphones - the change in sound was amazing!

[@basbass429]

about 2% to 3% is actually a lot! Makes me curious how it turns out when people are putting such a filter at such a spot it only sucks in hot air, instead of the rather good location in the fiesta. Regaining power on old engine, check spark-plugs and fuel-injectors first?

[@boriss.861]

75 to 77 bhp is a whopping 2.67% increase the figure K&N put in their blurb (not) on encouraging that dude to buy the filter. ( p.s I used to re-jet cars back in the day to gain extra bhp there was always a noticeable difference). Used a carburettor shop in Hillingdon Middlesex on the Uxbridge Road.

[@conorthomas1231]

Did not expect to see Hillingdon in this comment section!

[@stevep9739]

😂😂😂 I had a mk5 fiesta 1.3 59bhp. I used some of the original duct work and a £7 ebay pod filter nearly touching the front grill so incoming air was colder than under bonnet. Oh the noise was glorious. Double declutching like steve McQueen in bullet.😂😂 The midrange pull was great. Probably only made the same as this but the midrange was well up and great for the back roads. I was about 40 and it just took me back to my mini days😂. Thanks for the memories 😅

[@Dungshoveleux]

I used to get more performance from my C230 KOMPRESSOR just by going out in the winter in negative temperatures compared to summer. Colder air is more dense.

[@GregPodster133]

Chris seems a great/genuine petrol head. Probably see's /works on plenty of really exotic motor's but love's the simplicity of the Fiesta. 😅👍👍

[@ianchalklen1047]

Considering the cars Chris is normally dealing with I bet you are a breath of fresh air with your golden oldies 😃I don’t think my guess was to far off😊 De cat and let the old girl breathe better

[@UncleMinecraft]

It's all about the sound.

[@andrewprettyquick2070]

Turn the throttle position sensor round a bit. put bigger injectors in it from a 2.0 - there you go. put a potentiometer on the 02 sensor, turn till it's not too rich. It should sort itself out by itself on a run - then dyno it. It will run funky. But 50%+ power. drink fuel. spit fire.

[@steamsearcher]

Lots of SPACE round the bits and a great place for the battery. Had a look round a friends Hybrid Lexus and there was a small lunchbox of room left in the engine bay. Plus a tray to catch all the 10mm sockets etc. Wow it was clean. Looking great for a £600 car. David and Lily.

[@Mr-J...]

Had K&N sitting on Weber carb on my Mk3 Escort some 30yr ago. Seemed like great performance. Stuck a dodgy custom exhaust on it later which helped too. Great fun.

[@HA05GER]

I had same colour fiesta MK4 as my first car with a cone filter. I loved the noise 😂 same 1.25 engine aswell they are actualy 74 bhp. God that noise brings back some memories.

[@davideyres955]

My old polo’s exhaust had a small hole in it and was on the way out and was only £80 for a whole manifold to tail pipe so I was going to replace it before the MOT so decided to see how much I could rot it out by spraying water up the tail pipe. Rotted out the whole of the back exhaust box. Boy did it sound good to my 20 year old ears. Louder than my brothers X Flow Caterham, but had to change it in the end as I was sure I was going to get pulled by the rozzers. Fun times.

[@steveberridge4648]

I’ve seen several dyno tests on you tube recently involving older cars and all made stock power. People say cars lose power with age but these tests show that often they don’t if they been serviced regularly and are running well.

[@grantta7450]

Love how the clock on the wall doesn't't change time while you changed to the K&N, it gives you that much power you stopped time!!!!!!!!

[@stuartd9741]

The wheels weren't going round. The fiesta was turning the earth it was so powerful 🤣

[@danielbarton9291]

Great video, dyno check is something we lacked the cash for back in the 90s, i also assumed 150 more horses hahaha

[@kevinleesmith]

You have to change the needle valve as well so it can pull in more fuel, so it can use all the extra air it can pull in.

[@martind7418]

I don't think it's got a carburettor 😂

[@leepower2717]

Could try fitting a new fuel filter as these often get forgotten about then some Tesco Momentum & see if that improves the Dyno results - I wouldn't expect much but maybe a small improvement once the ECU adjusts the fueling.

[@pauljeffries]

Change the Needle?......in what?.....the engine is fuel injected 😆

[@paulpaintshop103]

Can you feel the passion, running through my veins, driving me insane

[@captainchaos6991]

I put silkolene pro boost in my old saab 900 turbo. Worked a treat!

[@chrismitchell9114]

This shape fiesta should be 75ps for the 1.25 and 90PS for the 1.4. It should also have a small black sticker saying as such on either the air box or rocker cover

[@jontownsend8090]

I used to obsess about VW, and drove many. I own a Mk7 gtd and used to own a Mk5 gt. They rust like you would never believe. I had a mk6 Fiesta, a lovely little run around and cheap as chips, well the chips before 2020. I have a transit connect, fantastic, and very comfortable. Ford is the way to go.

[@stuartd9741]

Right now I would love a mkII golf GTi. My sister had a white one as a company car back in the 90s. .. I had an E reg XR2 about 23 year ago. Fun car handled like sh... To a blanket. Can you imagine 13/60/185 wheels. & No power steering.💪 .. So tiny..fun car. Sold that XR2 for 250£.s because I then bought a golf VR6. ... Them XR2s 5k+ now

[@chunkymcfat]

Love the video, known Chris for years, good guy to know 👍🏻

[@alanpatterson2759]

Fitted one of them in 5 minutes back in the day.

[@garrydiggins3181]

In Halfords, they sell octane booster think it’s about £15. I’ve put it in my M3 Evo be surprised how different it feels.

[@ptaylor5014]

Wow they still sell that stuff! maybe they have changed the formula but when i put it into my car many years ago it did F all lol.

[@VXGaming]

I miss my MK4 Fiesta, it was a Mazda 121 and was basically the same. It has one of those airs filters and it didnt sit in the box cause the box was completely removed, The little thing just destroyed the miles until the air filter sucked a flooded road up into the engine.

[@bentullett6068]

The mazda 121's are ultra rare now

[@interloperdrones1172]

This brings back memories of my turquoise k11 micra 😅 the metal finned air filter just made it every bit the race car I wanted of it 😂

[@FXCartel]

Had a 1998 mk4 fiesta with 40k miles on it was absolutely mint and the Kent engine loved to be revved. Had a subaru exhaust on it and wheel spun everywhere wish I never got rid but got my mam to write it off 😂

[@Craig-wp3pz]

"I'm gonna leave it on for a week...." We've all said it at one point, and we were all wrong 😄 🤣 😂 😆

[@andrewgardner9615]

Is it rusty like most other Fiestas of this age?It does look clean.1.25 is a great Yamaha designed engine.

[@pigeonpoo1823]

I know. It basically lasted 20 years. My mum's 08 did not miss a beat for it's 15yrs with her. Bit thirsty but always a willing companion!

[@willallen7757]

Speaks volumes when the dyno operator wants to buy your econobox, but here in America if your car made those numbers you'd do your best to keep it under your hat lol. The 3.1 v6 in my Buick Century supposedly makes 195hp and the 4.3 Vortech v6 in my Safari makes 220, both are over 9.1 compression so you can really feel when you use premium gas.

[@daverickards7647]

Really recommend this guy .

[@Enlightened-WOLF]

i put one on my 2011 jag xfs it went from 270 bhp to 322 bhp and over 520 torque after a little tune and it sounds awsome

[@stuartd9741]

Yeah. Always bigger gains on a bigger engine. Though that's still an impressive increase. .. I'd suggest the air box was tuned for quietness rather than performance....

[@kingspunkbubble]

I’m looking at installing a K and N filter to raise the height of the air intake to make fording deep water safer.

[@jefferyholcombe5189]

Ebay Chinese intercooler & turbo with bigger injectors, the turbo would allow you to have it in a higher gear more if sized right so the spool time is quick! It would get better mileage as crazy as it sounds!

[@DriveWithAndy]

That's not bad at all. Also that MK4 is a great looking example

[@Seasidesurfer]

Spend your cash on getting the aircon fixed 🥵 Great video as always Geoff.

[@philipcupid6660]

Geoff mate, here you go get an ECU remap lol, sounds like a six cylinder 68 Mustang; but much better than our 1995 N Reg Golf 1.6 75hp that we had in 2007!! Would love to bring our XC60 T6 Turbo to see what it's got under the hood, but might cost a fortune from Switzerland!! Best Regards from Switzerland

[@pigeonpoo1823]

Sounds great. Wish id done that to my mum's when she had it!

[@SteveDull]

Thanks for a fantastic, fun car vid. And for keeping the missed gear change in! 😂

[@malfunction8165]

You can always get a bit more suck squeeze bang and a blow with a big enough tube, also bigger lobes on your shaft which opens the valves on the head for more air and liquid to get in for an even bigger bang, at least that's what I was told, I had a very basic education, I read it in a Haynes manual.

[@jonathanbeale3978]

Jeff, it is the glass stickers that add the really extra bhp.

[@angeloflight5148]

Brings back memories 😊

[@kidcowdy1231]

I thought the 1.25 was meant to be around 73-75bhp, maybe looking at a later model if it have over 80

[@ZoidPickle]

An air filter upgrade won't do much, Unless you change the exhaust manifold, and tweek the ecu. Cats may need to be Upgraded as well.

[@markscarborough1018]

If you're sucking more air in, you need to throw more fuel in and more exhaust out to make any significant gain. Bigger injectors and straight through pipes 😁?

[@jefferyholcombe5189]

Did the ECM get remapped with the filter install? You won't get all the gains until you remap the ECM

[@zubeystinzen540]

Put some new plugs in,decat & ram some air through to the new performance filter oh & dont forget the fluffy dice😂❤it

[@kenh3344]

Was there some valve bounce i heard revving with no load. After air filter fitted. ???

[@k956upg]

That cone requires heat shielding or you can lose them horses when it’s hot so I’d just use a panel filter. The panel filters boost is not going to be noticeable either & will be a bit quieter but the main reason I fitted filters to all my cars is there washable so they pay for themselves if you own the car 3-4 years. I now have a focus st with stage 1 so it’s about 275 hp 420 torque & stock filter is paper cone type so I swapped to green cone filter & it sounds awesome & probably 5 - 7hp gain on that because it’s turbo & higher powered cars will benefit more from filters…again the real win is noise response & washability but on that power level 5-7 hp is not noticed.

[@splendiferouse0]

We had one of those my wife and Eldest daughter sort of wrote it off between them. I got a call from D saying she got it stuck between two trees over the wold tops. It got fixed but shortly after the Eldest daughter finished it off😢

[@grahamclifton1483]

Don’t forget to clean, dry and re-oil the K&N filter every year! All the best!

[@ogasi1798]

why didn't you use the proper breather pipe that was on the filter? just wondering if a few more gains were left off the table there

[@messylaura]

Hi, do you have an update or could you do a vid on the green 1203 skoda panel van thats been in a a couple of vids previously, i have a couple of old skoda cars from the 70's and would love to see more of this van, its a rare one for the uk for sure

[@breid3492]

I got a k&n air filter for my van. No real difference in horsepower or fuel consumption. Where it did make a difference was in improving the rev response of the engine.

[@michaelsimpson9779]

Good on you Mate.

[@outandabout7636]

Are you organising any more dyno days ? Maybe 2025 ? Is it only remaps that chris does ? Or could he balance my old Triumph carbs and just get her running sweetly ? Any ideas what a remap would do for a skoda yeti 1.6tdi ? Thanks

[@Dont-come-at-me-24]

A chip and bigger injectors and exhaust work well on these

[@z4phill]

I'll have a spot on your Dyno day 3.0 si z4 coupé one of 5 in phoenix yellow registered in the UK , bought originally from Worcester 😁

[@Philljag]

I had a k@n on my corsa b back in the day it would bog down with all the heat 🤣 The increase in mpg isn’t really worth the noise,panel filter would be better.

[@therealdojj]

It's got 75 standard at the flywheel If you compare the power at the wheels it will give you a better set of real world figures It would be nice to see what sort of Dyno it is and what ask the numbers are at the bottom 👍

[@alanpatterson2759]

Mind 5th gear did varying mods on a VW Corrado and gained the best BHP with redex.

[@Casavult]

Turbo next? 😉😉

[@Koulis_]

A remap and improved induction should be done at the same time ideally.

[@peterlaker2234]

Big bore exhaust is a must Geoff defo up for a track day where you thinking ?

[@SteelSteedStan]

For mo' powa, Geoff, you need to straight pipe it, put a big ass Cummins with two turbos, a spoiler and a racing stripe.

[@Cayres9]

I fitted one of those and a big Bore exhaust to my old 2003 Corsa years ago and it made it slower lol

[@tommytriglav5181]

I put one on my civic and it did sound better but it now sucks in the hot air from the engine compartment. So I gain 2 percent with the larger filter and lose 2 percent because I am using hot air. So I was thinking of pointing it straight down to suck in the cold air from under the car and when I turn off the engine the dirt will just fall off the filter. What do you think +2 percent minus 2 percent but sounds a lot better. Lol

[@IfInDoubt..]

I thoroughly enjoyed that!!

[@zaphodbeeblebrox6627]

It can’t be any more than the fiesta without any filter. Perhaps you should run it without any filter and then with the K&N and compère it to the standard setup.

[@theamazinggoldfish8713]

Question please, what would happen if you added an electric squirrel cage blower to the front of the intake system. More power, fuel efficiency, or engine problems?

[@andyredvolvo9434]

👀👌big bore exhaust 😂next 1 that would be on the list then you can have the bumper protector too😂😂👀👌

[@richwilliams9895]

When tested stock was it a clean/ new air filter, surly a good service would be the best bet to regain some lost ponies

[@michaelmason5459]

What about drilling the original air box above filter for more air flow would the increase if any be cheaper than buying a KN filter. Loads of air box mods on various sites and vehicles but do they really work.

[@stevekenilworth]

i do like his shape of fiesta

[@darrennicholls5248]

Nice one Geoff.👍

[@TheSuperduke516]

Was the original filter clean🤔

[@therealunclevanya]

Geoff - Newsletter? I'm not on Faceplant so miss a lot, how do I sign up to the newsletter?