MR2 DYNO DAY - Which Air Intake is Best? Part 2

The results are in! Which intake performed best?
Big thanks to HSP ( / hsp.tuning.fabrication ) for their time last weekend.
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[@andrew1henderson1983]

Thanks for the shout out 😎 Andy J-Spec

[@meister_harris5623]

A dyno video is always interesting to me, certainly buttering some people’s parsnips🤙

[@UndeadCrook]

I do remap quite a few BMW E46's and a lot of people 'play' with the stock intake thinking they will do a better job than BMW themselves..99% of the time they lose power and just get heat soak the engine, I am tired of telling everyone stock airbox is best 99% of the time unless you spend a few grand on eventuri or similar intake system where it has been specifically made for the car. Usually stock airbox + pipercross or a less restrictive filter is the best, if you can make some intake hoses to bring extra cold air in the engine would be best.

[@pw_e46_m3]

It’s Friday and a new Dannydc2 video! Get in!

[@earnestbunbury2103]

It's Friday my doods!!!

[@nobodyshero200]

Cheers for the video. Ideal.

[@Josip5001]

great stuff, hope it will work out in the end

[@thatvectraestate]

Just what i needed today👌🏻 keep up the good work mate and hope the channel keeps growing

[@stixmk4]

Damn I love stuff like this.

[@SJLAutomotive]

Your videos sure make these night shifts a lot more bearable Dan! Glad to see you finally cracked what setup was best for the MRS. All the best for your next race dude! 👍

[@andrewgramson7224]

Been looking forward to this vid for a while. Let's hope you see the gains in race at Donington.

[@JDM_Jeffro]

Kick ass was hoping for a DDC2 vidjéo. (Little AvE reference there lol) Cheers Dan have a great weekend!

[@TrueBlueEG8]

That cure song near the end. Class:)

[@travioli5118]

i just have a k&n cold air on my 01 mr2 and ive loved it

[@grezza112]

Perfect end of the day watching while doing some admin!!

[@XunoHa]

Off work in a couple of hours so will watch then. Can like and comment though. Go on lad!

[@LupinYonderboy]

Oh I've been looking forward to this one! Thanks. FOR SCIENCE

[@LupinYonderboy]

This has been super interesting. I wonder if a wonky maff position problem could be tuned out with a custom ECU ? That wouldn't be allowed in the championship though. Also, I've had miss fires from water in the plug wells when I had a 1ZZ and a 2ZZ before i got the slightly embarrassing lotus engine cover.

[@brianmcintyre14]

More time is spent in mid range rather than at peak so you're going to notice it 👍

[@dannyDC2]

Hopefully!

[@ChrisBeevor0511]

A right productive bit of R&D there lad

[@timocallaghan4408]

Looking forward to seeing how this translates into lap times/positions! Every extra km/h out of a corner is the biggest source of laptime

[@94tegLSatMSC]

Good work. I've often read the stock intake setup is pretty good but this confirms it. I just recently put on a Monkey Wrench intake on my MR2 and it seems to have helped a bit. They use an intake tube that has the same diameter as the stock intake to keep the MAF happy but also a nice K&N filter and it puts it behind the battery to hopefully catch clean cold air. Could be something to add to your list the next time you head to the dyno.

[@dannyDC2]

I’ve seen some kits. I quite like Nick Barbados’ design too. I had the same diameter here but the MAF was too high. I’ll try to get a MWR one when I go next!

[@automotivepleasures5960]

Mental, just goes to show aftermarket and bodgery can have negative effects. Saying that there is bodgery that is next level. The ducting for the airbox love it! Good luck for the next race Dan.

[@amancars3807]

Damnn, 18:55 hands down perfect intake setup Danny! Good job

[@ciscodiablo]

Thanks for that Dan. Have seen many different "cold air" intakes and they all seem problematic. I have had a close look at my standard set up and the only criticism I have is the 90 degree turn it makes in the guard pointing it to the side of the battery instead of directly towards the side scoop. I can only guess Toyota did this to avoid water, dust and debris from going directly into the air intake. Your dyno testing confirms that the standard air box is about as good as it gets. For that reason I will not mess with mine. Cheers from Down Under.

[@anthonybelton-ford3124]

Nice comparison between stock airbox and mushroom filter. Gained at top end slightly but lost 10 - 12 bhp midrange pretty much all the way up

[@TheMick26]

Hey Danny.🖐 Was outta town and driving most of yesterday, but finally got settled in for a watch and a comment. I like the fact that you're willing to listen to, but don't necessarily believe everything the internet says. There's only one way to know for sure. Kudos for taking time to test and see the results for yourself.👊 I've never liked a MAF setup, kinda scared of them because they can be so damned finicky. A few mm makes a world of difference. Looks like you've got the best setup for now, but I know the spirited man you are, you won't stop until you have that competitive advantage.👊 Picking up more power is always welcome and as EE has shown us, inscreased area under the curve is more important than just a peak hp number. You've invested a fair amount of R&D on the MR2 and I'm wishing you many happy returns tomorrow at Donington Park. Give 'em hell. Have a good evening, Dan.✌

[@dannyDC2]

Cheers dude 👏

[@TomB1988]

Who knew a company like Toyota would know best.

[@dannyDC2]

Pft I’m sure it can be better. Will get back there later in the year

[@bigped845]

Nice one the cure Forest tune ...

[@Munka1985]

Bet that one dislike is one of your competitors, worried about those extra horses

[@dannyDC2]

Well aye haha

[@shinyparts]

I had the same sort of misfire on mine, its due to not running the plastic cover over the coils - water was pooling in the valley where the coils are and then down one of the plugs, worked fine when it was on the flat by accelerating or going up a hill the water would basically stop the coil from actually firing the plug.

[@calebcuddy1990]

Great vid. I see a lot of people cut up the original air box to get the standard diameter of pipe and correct positioning of maf and put a cone on the standard box. If you ever went back I’d like to see how it preforms with a setup like this

[@dannyDC2]

Yeah I always thought that was just people being cheap but now I see there’s method to the magners. I’ll have to do some further testing later down the line

[@The_BenboBaggins]

If it were me experimenting with the MAF adapter, I'd be tempted to get the mounting face machined down too far - as much as possible - and then have a load of 1mm and 0.5mm spacer shims cut to test various heights until finding the best performing.

[@TheRyanl164]

Interesting that the standard gives so much more in the mid range. Hopefully get some good results on Sunday, good luck 👍

[@dannyDC2]

Just needs some fettling really but not enough time. Was always running lean without stock maf housing

[@mesonyxx]

Kraftwerk in the backround, sickkk

[@ryanjagger7609]

Here from car throttle and subscribed immediately 👍

[@dannyDC2]

Nice one

[@PlaneTMRS]

Super interesting video! Makes me happy that I didnt buy a different intake :P

[@thedownshiftchannel]

Ahh Ste Pritchard messing with the accord top lad

[@bashes1]

Sounds so naughty with the ram air setup.

[@dannyDC2]

Aye will sound different now for sure on the videos

[@SonicSW20]

Good work Dan! 👍 it would be interesting to go back with a MAF tube that works properly and pipe routing that gets the mushroom filter right down into the scoop.

[@dannyDC2]

The problem with all the other filters was MAF related I’m sure. I want to get it lowered and get some washers to raise it plus some hours on the dyno, find the sweet spot for the oem fuel/mapping

[@SonicSW20]

@@dannyDC2 it's an odd issue, the cross sectional area of the MAF tube is of course critical, but I'm surprised that a installation height difference of 1-2mm made such a huge difference. The evidence demonstrates otherwise though. That's getting into big boy science beyond my small brain.

[@MrYusuf989]

@@SonicSW20 flow through a pipe isnt constant, its fastest at the centre and slowest at the edge, thats why the maf is acting weird I think

[@YTSsport]

Danny the best is the standard airbox with a better panel filter then with a better air feed if possible.

[@dannyDC2]

It’s the best *for now* 🧐

[@BenPro87]

High Contrast, Todd Terje, Matthew Wilder 🎶 👍

[@zeroyon4562]

That’s about what you’d expect, in my exp Altezzas also use an over sensitive maf and they can run like a bag of shit with aftermarket maf tubes and intakes too. If only Toyota used a map sensor. The stock panel filter is more than adequate. Be wary of oiled filters as well, they can contaminate the maf if over oiled.

[@quicknickdriver8510]

Smoother and stronger right through the rev range. Result

[@adamg8554]

What about slightly deforming the alloy MAF housing adapter to make a slight oval shape. Reduces the gap slightly, and a fair few cars use an oval MAF housing adapter. Something to try at least

[@daveydynamo]

Not sure if it's allowed in your class, but a popular intake mod here in the US is not only spacing the MAF out about 4mm, but also removing the little air vanes inside the airbox and swapping in 2ZZ injectors. I ran the setup in mine for a few years and it improved mid range by quite a bit.

[@andrewweston2319]

You can't do this mod within the rules they check your injector colour the race organiser runs about 11 mr2s mk2s and mk3's for hire so he knows all the power gains

[@dannyDC2]

Indeed no messing about with the injectors

[@777MAV]

Ok, now watching whole video (and bonus content) I think you should try mushroom filter AND bigger injectors/raised fuel pressure (if it's allowed). I need it read the regulations...

[@dannyDC2]

It’s not allowed lol

[@lindenbasket]

Song at 18:55 is Inspector Norse by Todd Terje Many a time I've wondered "what's that song Dan is listening to?", this time I know it :D

[@dannyDC2]

Correct 😁

[@davebentley3542]

Nice one fella. You look a lot more confident and relaxed in front of the camera these days. What’s the plan on the green machine?

[@dannyDC2]

Just need to get the rest of stuff ordered then have one big video getting it rolling

[@davebentley3542]

@@dannyDC2 cool 😎 You certainly have a fair amount of projects to play with now!

[@Oskier94]

Let us see the numbers man

[@wayneclement7201]

Nice 574's lad

[@micheltebraake7915]

To measure is to know, you have become a lot wiser where your engine power is.

[@MeltonAngling]

would be great to see you do a video like this on the ‘maf mod’. I understand you can’t use it on the track but there is a lot of people interested to see it happen

[@dannyDC2]

I'm sure but it would be a lot of effort to have to just remove afterwards lol

[@mr2garage]

2nd Maf Mod video

[@aaronmorgan4145]

You should get some heat barrier tape for your oem airbox.

[@dannyDC2]

It has a heat shield lol

[@glenn20l]

Just what you need on a shitty rainy Friday 👍🏼 I reckon you’ll notice a big difference Sunday. Can you run performance air filters for the standard boxes? “Edit” just seen your insta story for KN filter 😅

[@seantogami]

you can buy a k&n performance air filter for a stock air box for a mr2

[@dannyDC2]

Indeed

[@fedezyl]

there's your way to tune your ecu, just play with the maf housing size to correct the afr's. Might be worth to try to figure out how to make a ram air intake from that side intake, the extra airflow at speed should give you some ponies

[@dannyDC2]

Yes perfect. That's the way to go. Maximise what the stock can do..

[@fedezyl]

@@dannyDC2 How were the afr's with the stock intake? You could always tune your ecu to maximize the HP's with AFR tuning, once you know what AFR is good you can resize the MAF housing to suit. Usually OEM tunes run rich for emissions, bear in mind that the MAF not reading the true air mass will affect the whole map. Also check the long term and short term fuel trims, as the ECU will try to correct from deviations of the actual AFR vs the map AFR. You can override that for a bit by disconnecting the battery thus resetting the ECU, but you might have to do that before all sessions. Love the racing content, keep it going.

[@nigelcottee5600]

There a saying in racing that is true, BHP sells engine’s torque wins races!

[@dannyDC2]

Let’s hope so 😆

[@elliot438bcfcVTEC]

BHP is an equation that counts of torque. BHP is the only concern in racing environment, otherwise everyone would be racing PD130s🚂🤣

[@earnestbunbury2103]

Yeah but Hector's still runnin' 3 spoon engines ...

[@AmirPomen]

If u can run mafless with standalone ecu.. using alph-N or VE tune... Then, any airbox will have less variation in power... But regarding stock maf, Stock engine with minimal internal mods, Stock modified airbox were the best... Not only on Mr2S... But this concept is true to almost all other car that were using maf sensor.... Alternatively, u can try modify the airbox to have bigger filtered air reserve capacity... This mod u will see gain when transitioning from off throttle to wot moment..

[@dannyDC2]

Nice info, unfortunately I can’t modify the stock setup so just need to maximise it. Like you say the stock will take some beating

[@AmirPomen]

@@dannyDC2 yup.. i totally understand there is limitation on what mechanical mods allowed in spec race series... Which usually not event allowed to touch on the engine mods (if that applied to your race series) Maybe u can try honda b16a whale pen1s intake pipe in joined with stock airbox after the maf sensor... And putting bigger tapered velocity stack funnel infront of the maf sensor inside the airbox Also probably the best method to see if getting any gains on said mod is by doing accel-decel pull at mid rpm on the dyno where usually transition from braking to accelerating in the rev range... Anyway this is just a mere suggestion... But atleast we knew that we tried to gain maximum efficiency from whatever current engine spec allowed... And i do agree by thinkering with stock airbox, there is plenty of gain still left on the table for us to grab for on track advantage... (Back then in moto2 class motogp racing, even airbox lid were not allowed to be modified because this will have some gain in engine performance...so to avoid unfair advantage by the team, the airbox is prohibited to touch)

[@nathansmith1297]

Maybe get some flappy paddles on the controller ? Slide cancel

[@dannyDC2]

Good shout tbf

[@josep.3364]

well, what I can tell you is that every time I renew my spark plugs I get increased power. I do use a performance air filter with original box. And spyderchat forum mentions you can mess around with the fuel pressure in combination with the air filter, but I've never done it, it was only like 7hp or so.

[@dannyDC2]

You must really let your plugs get old lol. You got a link to the fuel pressure stuff? Don’t think I’ve seen that

[@777MAV]

@@dannyDC2 what's the point? Ecu will trim it out probably... Maybe something will stay in open loop, but it will be pretty hard to hit sweet spot for mixtures using such rough tools, imo...

[@HrV147]

You can crush the fuel pressure regulator to increase fuel rail pressure, but without leaning your map and putting bigger injectors in you will just overfuel and exceed duty cycle for the oem green injectors, plus all this isnt allowed in mr2 chapionship regs

[@777MAV]

@@HrV147 how exactly this can make you run out of injectors? Usually ecu just runs open loop modes straight from fuel map. I believe oem lambda sensors are narrowband, but it's worth cjecking... If ecu applies LTFT or any other trim to open loop it doesn't make any sense - if you put bigger injectors or raise fuel pressure ecu will still adopt to it to some extent.

[@pjay3028]

The fuel pressure increase (or yellow injectors) works with a MAF riser. There's loads of stuff about it, a guy called Cap discovered it. If the MAF is a tiny bit higher you do get more power if you increase the fueling as well. But your racing regs won't allow it. www.mr2roc.org/forum/index.php?topic=51647.0

[@phoneroni]

will love to see how caps maf mod will be on a dyno

[@dannyDC2]

Yeah weird how that’s been going so long and nobody tried it

[@phoneroni]

@@dannyDC2 lots of people talked and said that this is doing a change but no one test it and youtube it (dont forget to mention me when you do that lol (C))

[@Truzo]

It's a shame you didn't hack the maf housing out of a factory airbox and put a cone filter right in the side vent. That was going to be my next idea on the 2zz.

[@dannyDC2]

I didn't have a spare but I do now so can test it in the future hopefully

[@bikerkevv4692]

Standard airbox and k&n panel filter id go for pal

[@dannyDC2]

Bingo

[@dpoid]

I tried cheapo bosch panel filter from europarts had both, no figures but certainly felt better with the bosch compared to the K&N

[@bikerkevv4692]

@@dpoid you wouldn't notice unless u had print outs of each

[@bikerkevv4692]

@@dpoid the difference would be small, but on a track against cars very similar with same engines etc, it could make that small push you need... Every little helps as Tesco says

[@mieliaumiegociau]

Are you allowed to do internal engine modifications like port and skim the head ?

[@MomentumThief]

Could you cut the maf housing straight pipe section off an OEM airbox and use it with the ramair setup?

[@dannyDC2]

Yes now I have a spare I can test that, but I'm not going to try anything until I have more dyno time

[@CarAndMechanical]

Does the standard airbox have a velocity stack? Could be worth adding for future tests.

[@dannyDC2]

Yeah it has within the airbox

[@altypeRR]

I’m not sure if the regulations allow it but could you run a maf adjuster box on it? I know for the older diesels that ran maf you could get a box that went between the maf and the ecu that could adjust for the maf being out of spec.

[@dannyDC2]

No that wouldn’t be allowed unfortunately

[@D4VE26]

Veryyyy interesting... i hope that u gives u that lil edge now dan!! Are you allowed to drill the std. Box or is that against rules?

[@dannyDC2]

You can drill it but I don’t think that will help lol

[@D4VE26]

@@dannyDC2 its helped on a couple ive done in past, especially wide open throttle

[@MrNurdiboy]

Danny, have you spoken to any of the competitors about what they run for air intake bits n bobs?

[@dannyDC2]

Somewhat but I'm more of a have a go hero eh

[@barrysheldrick2704]

Put a bellmouth radius on the pipe in the vent mate, that will flow more than the straight pipe.

[@dannyDC2]

A velocity stack?

[@barrysheldrick2704]

Yup. A radius on the end of that pipe will let more air flow in. Especially as your speed builds up

[@dannyDC2]

@@barrysheldrick2704 I know what you mean but there isn't any room nor can I modify it unfortunately. Both the aftermarket air filters had those inbuilt

[@KeMa9886]

Put a sprintfilter on the standard airbox, and see if is better

[@dannyDC2]

Sprint filer? Is that a brand?

[@KeMa9886]

@@dannyDC2 Yes, they use polyester instead of cotton for sport filter, It gives more power

[@Zeriel00]

This guy is crazy, removed the metal piece in the engine lid that catches water, then also removes the plastic that covers the engine coils. WTH did you think would happen?! Can your MR2 even run if it rains??? 😱

[@zombiesmith9420]

Hi 👋 again

[@dannyDC2]

Indeed

[@adriansmith8555]

You need the plastic engine cover to stop water getting on the spark plugs . Also looks like you have removed the rain tray from the engine cover which doesn’t help keeping the engine dry

[@dannyDC2]

I am aware of my self harm haha. The tray won’t mount anyway as it’s just a skin but I’ve put a plug cover on

[@adriansmith8555]

DannyDC2 haha that should help anyway

[@martijnkosters9024]

Talking about good music, do I spy some cheeky Kraftwerk in the background around 9:20 onwards?

[@dannyDC2]

Indeed

[@MrYusuf989]

12:15 wdym with removed wall from standard airbox? You mean the 2 vanes?

[@MrYusuf989]

ah nvm just saw your comment below

[@AngelFloyd27]

I thought it would deliver a lot less, not bad man, not bad at all for a 1ZZ.

[@josep.3364]

You need another 1zz in the same dyno, because dyno correction factor really change the number. MR2 00..03 are supposed to have 127hp at the wheels and 03..07 are supposed to have 138hp at the wheels. Correction its 128hp for the facelift models!

[@dannyDC2]

That’s not true at all dude, not in Europe anyway. They all make the same power and it’s not 138 at the wheels lol. That would be like 170 flywheel

[@josep.3364]

no idea why I hit the 3.. its 128, facelift models have more consistent power outputs, the engine / exaust have tiny little changes

[@AngelFloyd27]

@@josep.3364 All those cars were rated at 143 hp at the flywheel here in Europe, at least where I live (in Spain), which is about 140 bhp in the UK I think. And the first and facelift models never changed the power figures. That car has a healthy engine.

[@Captain_Vimes]

Did you run the standard air box on the dyno with the oem elbow and ducting connected? Or was it just the air box?

[@dannyDC2]

No I put my own ducting in for the oem airbox (roughly the same without routing back into the engine bay)

[@justso1823]

Are you running an AFR sensor with a gauge ?

[@johnmitchell2269]

I wonder what the OEM airbox, with a K&N panel filter, relocated closer to where the air comes in, would do?

[@dannyDC2]

Relocating the standard box isn’t really an option

[@johnmitchell2269]

@@dannyDC2 You concerned about water getting inside one of the cylinders? Possible head gasket failure?

[@dpoid]

Stock set up has ducting from the side vent directly into the airbox

[@dannyDC2]

@@dpoid yes but where does that stock ducting go to? The engine bay

[@deanodrives4966]

Yh but open kone swndz sik init

[@dannyDC2]

Init

[@stuartcrann]

Did you reset the ECU between?

[@dannyDC2]

The ecu was replaced for each run

[@GarDjinn]

if you are not restting the ecu each time hows it going to learn the diffrent airboxes and filters

[@dannyDC2]

Swapping the ECU should reset it no?

[@GarDjinn]

@@dannyDC2 i put key to first click and then disconnect both car battery leads and hold them together that is how you rest the ecu on most cars

[@dannyDC2]

Bro I literally took the ECU out and put another one in on every other run lol

[@GarDjinn]

@@dannyDC2 i could take the mother board outta my pc and put it back in and it wouldent reset nothing but if i do the correct reset procedure like ive told you it will reset common internet mistake that takeing ecu out resets it

[@josep.3364]

you are correct you need to discharge ECU internal capacitors to clear/reset it

[@MrSausageT]

When your at your next race you wanna pop your head in and look at one of the other cars😏 Maybe ware a disguise

[@dannyDC2]

Lol I sent some spies in last time

[@gorgonscc]

Anybody else here from watching Danny on the ct podcast

[@dannyDC2]

Ye me

[@DerHoopdy]

Good video, thanks for the info. Had been toying with the idea of putting a cone setup on the t-sport, after this i'll just stick to the stock airbox and K&N panel. Could you elaborate on what you mean "airbox with the wall removed"? Thanks dude

[@dannyDC2]

There’s a wall in the top cover you can remove with a spare hour and a lot of dremel

[@jakemcdonough7712]

is the rest of the grid in the mr2 championship just normal fellows like yourself tinkering with the car in a shed or do some of the drivers have serious money pumped into the cars and are part of proper teams and shit like that

[@dannyDC2]

Hard to tell, some have been doing it a long time. I haven’t gone round and asked everybody like but it seems pretty chill

[@TougeTime]

Less than ideal

[@dannyDC2]

Frog time

[@HenryOCarmichaelSmith]

first

[@dehv]

Stock is best 😂 it's like Toyota know what they're doing

[@dannyDC2]

For now 🤣

[@HenryOCarmichaelSmith]

Now book another session and repeat all those tests with the engine cover closed.........

[@dannyDC2]

Lol giving the open filters a chance

[@HenryOCarmichaelSmith]

@@dannyDC2 haha I was gonna say... It would have been interesting to see how bad they were after heat soak. Try covering the std air box with heat reflective tape?

[@josep.3364]

the original airbox collector is located above the left wheel, it is influenced a little bit by side air intake, there are side intake extensions that might create a bit of pressure, but they would also create drag.

[@jasonpoole6284]

So Toyota know what they are doing then 😂

[@dannyDC2]

I think it can still be improved. Just underestimated how keen that maf is !

[@jasonpoole6284]

@@dannyDC2 is it worth the time and the flaff around for a couple bhp, or put a better engine in it. i seen alot of people detune there cars and spent 100s of hours doing it to then put it back to factory.

[@dannyDC2]

Yes it’s worth it when you race in a production series lol

[@jasonpoole6284]

@@dannyDC2 Ahh yes i forgot you did that hahah, good luck to you.

[@777MAV]

No time to watch. just like for now... ;)

[@EngineeringAndRestoration]

MR2s and water in spark plug wells, name a more iconic duo. Bit of RTV/ silicone grease under the shroud of the leads will see you right.

[@dannyDC2]

Good shout. They have gaskets on the coil packs but clearly not doing much

[@Wobblewagon]

Yay first