Influenced by Dan Silvestor's build I built this.


O/E maf tube cut out of airbox. At cruising speed there is no extra noise.  On acceleration, the wider the throttle opening & higher the revs, the louder it gets.

If sat on a warm day & then move off, the intake temp' immediately starts to fall. A thermal wrap around it would help it.  I also have a free-er flowing manifold & cat, so there's some gain there.

Thanks for unlocking the thread. As you said, more research been done here over the years!

I seem to recall a DannyDC2 video a couple of years ago where he back-to-backed a few intake setups and found close to 10bhp.

That car made best power with something that ended up quite lean - 13:1 AFR or leaner if I remember correctly - and a short intake tract, leaving the filter in front of the battery.

I plan to have a play around with intakes in the coming months, but it's looking like I'll start with:

- Short system like Danny's
- A velocity stack at the entry (have a Google for Nick Barbados intake MR2)
- OEM intake pipe diameter and MAF location / position

Quote from: shnazzle on January 23, 2026, 18:01Unlocked this post.
It's been years and maybe someone has done some flow testing or something else and has some evidence to add.
Science and all that.

I will hold off selling my Direnza cold air intake in the hope that it's actually one that works 🤞🙄😂

Quote from: 2 of the left on January 23, 2026, 17:41ECU light showing but no codes The garage staff perplexed  ECU not showing now Radical option  Change the battery MR2's keep us on our toes!!!

Clean the ground on the crankshaft position sensor.

Unlocked this post. 
It's been years and maybe someone has done some flow testing or something else and has some evidence to add.
Science and all that.

ECU light showing but no codes The garage staff perplexed  ECU not showing now Radical option  Change the battery MR2's keep us on our toes!!!

Quote from: shnazzle on January 23, 2026, 10:13https://www.mr2roc.org/index.php?topic=67937.msg823131;topicseen#msg823131


Wow. Blast from the past

Ok, read that all twice and I get it now.

Anyone want a cold air induction kit as mine is going on eBay this weekend.

I will maybe try removing the elbow as suggested in the post for some extra noise.

Thanks for all your help.

Andy

Quote from: shnazzle on January 23, 2026, 14:46Oh the induction noise from the Hurricane kit off the Lotus with ducting to the side vent is 100% the boyo. Especially with the slightly overbored throttle body, TTE exhaust and 200cell 2.5" cat

The noise was addictive.

I did get a bit tired of it on longer drives though and ultimately put the stock intake back in because I'm a total fuel-trim nazi

Don't know what all that stuff is but you had me at Lotus 

On a whim I bought a Direnza kit it seems to be good quality and the MAF is exactly same distance from inlet as the factory. The cone filter goes through the hole under the bar that bonnet attachment is on into the area next to coolant bottle. So it appears to be a good one.

https://www.direnza.co.uk/air-induction/toyota-mr2-mrs-w30-roadster-1-8-00-07-cold-air-induction-kit/

Exhaust wise I have excellent sound, perfect balance in my opinion and no droning either. It's a Gravity manifold, Zero sports cat & Zero single exit exhaust with a K&N panel filter.

But at National there were other mk3s on the run up with cold air induction kits and they sounded great when pedal was to the metal 

I'm not after extra bhp just induction noise & car to run as it does currently as it's very good.

Cheers

Andy

Oh the induction noise from the Hurricane kit off the Lotus with ducting to the side vent is 100% the boyo. Especially with the slightly overbored throttle body, TTE exhaust and 200cell 2.5" cat

The noise was addictive.

I did get a bit tired of it on longer drives though and ultimately put the stock intake back in because I'm a total fuel-trim nazi

Quote from: Carolyn on January 23, 2026, 13:13The best intake is the one it came with.

I know, but I really fancy some induction noise 😂. Not bothered about extra BHP, just as long as it's not losing power to be honest.

I totally agree that the cold air that is force fed through the side scoop into the air box where the MAF sits is the best option, but it's very quiet 🤫.