TESTED!:

[@pommeybiker]

​@Aaron G-muppet style - Can be found in the links below kzbin.info/www/bejne/r4rOe3uIf6eXeKc kzbin.info/door/jrRkL8HkUq01NKkeV7Ny7w

[@Thumpermad]

I was just thinking Lucky Luke would like to watch this and lo and behold 😅🤔😅🤪🙏 it's you bloody brilliant mate love the manometer 👌

[@ShonkyProductions]

Good work boys! I've got my cams, intake snorkle and 550performace matching tune to install shortly. I also got one of Mavericks vented airbox lids. If you're interested in testing that, let me know and I'll post it to you Sean.

[@pommeybiker]

On Aarons channel he ran some tests with the door off. I will say 550 have only road tuned the ECU. It hasn't been on a Dyno. So I'm waiting for a bit longer till I do my cams. Till he's dynoed it for the timings. He really should mention that on his website.

[@pommeybiker]

The hi flow intake make a massive difference in top end IMHO. Before CAMs

[@PP-wz7mp]

Excellent

[@rosarioroberto5823]

WOOHOO, what a fantastic video 🇺🇸🍾🎉🇺🇸 Would you provide me with the link for the swing arm black protection?! Thank you for assisting me

[@marcochavanne]

For anyone on the fence about the velocity stack I did this and didn't use any epoxy or make it look like a hack job. Just take your time with a Dremel and keep testing to see if it fits. I ground down the area where there is a plastic seam in a semi-circle and it sat totally flush. There was no need for all the goop. I just sealed the lip with RTV, wiped away the excess, and let it sit overnight. Tested with pressurized water and had no leaks. All that being said it was 100% worth it and made a notable difference paired with the cams and tune.

[@mt1885]

Wish they made an air box with a foam filter and high flow intake.

[@martygut]

Hello, thanks a lot, (y) It was very helpful for my setup air filter and prefilter. I had a terrible combination :)

[@dualsportadventure]

Super useful info. Thank-you.

[@bernk]

Thanks for the great video! Any idea how effective the inverted pre-filter is at filtering? To me it makes sense that for filtering you want a funnel going into the snorkel, rather than a wide open cone on top of the snorkel, but it also makes sense that this greatly reduces the volume of air going in. Have you guys found that the inverted pre-filter still does its job?

[@kiwiadventurer]

Hey guys that was bloody impressive and right on the nail what I wanted to know. Relative to that are some interesting replies as to how the mods benefit the real world. I have a 2022 rally with the full uni filter set up. I'll definitely be locating the filter sox's outside after watching your vid. Couple of questions if I may please/ What is the diameter diff between the cb and crf intake venturi's? What year are your bikes. Reason I ask is I'm interested dumping all the emission stuff. I watched Jake the Garden Snake remove all his then went to do mine and all the area behind the cylinder is all free space and completely different to his bike. Cheers from NZ

[@ug9191]

I don't think you can trust the epoxy to bond to plastic well. Never seems to stick in my experience.

[@cjeremie]

it's very interesting. are you using inverted unifilter socks on your intake tubes or have left those out? just one main filter in the airbox? I've ordered twon air box filters come with covers to use in water crossing.

[@KeithArmstrong-x8r]

Thanks for the interesting comparison. I must run a pre-filter because of where I live. I haven't done any additional upgrades. Would it help to add a second snorkel with pre-filter to the airbox even though I haven't changed to the CB300 throttle body intake?

[@pommeybiker]

Yes it would

[@mcdonaldslover52]

What do these numbers translate to practically though? I've installed a uni filter pre filter as recommended (stuffed into the pipe) but to be honest have not really noticed any performance change. Although I have noticed significantly less dust

[@pommeybiker]

From a practical point of view it's drastically higher resistance than stock. If anything you want it close to factory stock as that's what Honda designed for the engine otherwise the mixture will be rich

[@mcdonaldslover52]

@@pommeybiker do you have to have the full uni filter kit by uni filter? Would be interested how the foam filter behaves with this test too. I would've thought a company like that would test to make sure they aren't suffocating the bike

[@guestappearance3211]

I haven’t seen the 2 hp yet

[@pommeybiker]

@@guestappearance3211 I didn't have to go to the trouble to show people that stuffing the snorkel with foam is worse than inverting it either

[@pommeybiker]

@@mcdonaldslover52 I don't have that kit and the airbox is now installed back into the bike unfortunately.

[@slakk5093]

Hi Pompey Biker, wondering if you could help. I’ve got a 300Rally on order but it’s been delayed again until April next year. So I’m thinking of picking up a WR250R with sorted suspension, long range tank and low km’s. Seeing as you own both, do you think I should hold out for the 300 Rally, or pickup the WR250R? Is the crf300 engine better in your experience. Thanks

[@luke3892]

Would be keen how the unifilter foam filter performs compared to the DNA filter. Anyone have any idea? Don't know which one to buy

[@salazam]

the k&n

[@TylerMcCool]

I've been waiting for someone to do dyno runs on the 300 with stock trim and all the mods people are throwing on, as talk is cheap frankly.. I'm quite satisfied with my stock airbox and full RS4 exhaust + 550 ECU I'll say that much..

[@240LTS]

... Is your 550 ECU a stock modified or Stage 1? Did you also change the stock air filter to a DNA or other? . I just received the following products but haven't installed them yet. the Yosh RS4 full exhaust. 550 Stage 1. CBR boot. DNA filter. Double the hole(s) in the back/top of the air box. I want to do some (before) riding, testing and videoing with the stock OEM's then some (after) video comparisons. After that I will see if I want to modify and install the CBR boot. . Jeff .

[@TylerMcCool]

I had the stage 1 91 octane - no modifications to airbox or air filter.@@240LTS

[@240LTS]

@@TylerMcCool ... Thank you. I will add the extra hole(s) in the back top of the air box and see how I like it before adding the CBR boot. Thank you again. Jeff

[@TylerMcCool]

no problemo@@240LTS

[@PatchedBandit]

I'm gonna do some racebox dragrace testing with the tune later. I'm the same way I want to see the results in some form or another.