Thats it. No more pair or flapper

Hey guys, sorry for being so out of touch but the mods your talking about A&A performance pair block offs--
de-snorkeled/flapper/evaped , how will these mods affect my bike and how hard are they to do ? any place I can go(maybe here) to find instructions ? My bikes pretty much stock for the moment and would like to enhance the performance any way I can until I can afford pipes and a commander. Any help would be appreciated

 

Can of worms opened!

I did these to help with throttle response. Well, took the evap can out to make oil changes easier. Not sure if everyone agrees with me, but I think the bike is happier with the pair system disabled (no more 02 sensors confusing the fuel computer) and the snorkel removed.

Got ten bucks that says someone disagrees, but just my experience

 

duccman, do a search here for "pair valve" you should find a ton of info(I just did) on "how to" and where to find parts.

 

So, if I drop the pair deal and the evap crap, do I have to get rid of the O2 sensors?
I am starting to think I want to do this mod, but not convinced.

 

Got educated, here ya go guys


The PAIR valve mod is separate from the other mods you listed. You actually do not even need the block-off plates to disable the PAIR valve system, as you can simply block the covers off with some rubber caps. However, if you are looking to save a little weight and clean up your engine, then the plates are a nice option. The main point of disabling the PAIR system is to obtain a true air/fuel reading while tuning. Normally fresh air is injected into the exhaust in an attempt to burn off excess fuel, but this leads to a leaner than actual AFR reading (and also leads to popping on deceleration with an aftermarket exhaust). There is no power gain to be found in disabling the PAIR system.

The intake snorkel resides in your airbox to draw cooler air in (supposedly) and quiet the intake noise. You will generally gain a tiny bit of power by yanking it out, but far more noticeable is the accompanying intake roar. The flapper valve is also about quieting the intake down between 4-6k rpms, and small gains can be found by disabling and tuning for it. The EVAP system is only required on California bikes, but all US 6th-gens have it, so if you want to lose some weight you can ditch that too.

These mods overall do next to nothing for power but do make it sound a little better, provide you with a better tune, and allow you to shed some weight. It's up to you how far you want to go with everything.



Thanks for your interest,
Dan Antonelli

A&A Performance LLC
215-364-8200
A&A Performance - Supercharged Sportbike Specialists

 

Thanks for the info duccmann. I've been thinking of doing these myself. How did these mods affect the low speed throttle? I'm also curious on the effect of fuel mileage?

 

Hey Mr, just educating myself on doing these mods . Thought I would email A&A Performance and they responded right away so I thought I would post what they had to say . Any ways, if you do these before me please post the results OK THX

 

I have had the bike deflappered for a few days. No adverse effects have been observed. I do notice a little more growl while on the throttle and this is a good thing.
I am now seriously looking at removing the PAIR system and the evap canister.

 

For what it's worth, here's my two cents. Shortly after I bought my 07 in 08 brand new, I bought a PCIII installed it and took the bike to Las Vegas Dynotech where he disabled the O2 sensors and dynotuned it. I didn't change out the exhaust. Just with those two items, there was a HUGE difference in smoothness and power. I went from roughly 220 miles per tank to barely squeezing out 200 per tank... freeway riding.

I'd been happy with the bike all this time until I heard Long's bike with the Staintunes and I wanted them badly. I finally found a set on eBay and won them for a bit over $600.00. Put them on and installed the standard map from the Dynojet site for Staintunes. I got sloppy, sluggish throttle and lost 50 miles per tank. A couple months of that and I went back to my guy for a dynotune. I now have better throttle response and I DO love the sound, but haven't gained much back on mileage. If I"m 100% freeway and stay in 6th, I can squeeze out 180 miles, but I'm cutting it close. Because of the loss in gas mileage I'm half regretting changing out the pipes. I haven't done the pair valve, flapper or any of that other stuff, and I've talked to a few mechanics here, a couple that have a lot of experience with all generations of VFRs... and they say those things do nothing for performance and there's no point. They recommend exactly what I've done... just PCIII and O2 sensors. Not saying they're right, just telling you what they said, for whatever it's worth....

Anybody else get a huge decrease in gas mileage when changing out pipes?

 

Is there a point to buying those block off plates, couldnt you just buy a pair of large vacuum port caps and just cap off the factory pair ports on the valve cover or am i missing soemthing?

 

If you're so obsessed with mileage you should get a pc5 and tune the 6th gear map's light throttle cells on the leaner side (aka how the factory map is tuned). This should up your cruising mileage while keeping your drivability and performance intact.

 

+1 PC V is cool, just learn you can have two map (Eco and Agressive) just a flip of a button.........Anyone want my PC III ? Time for change...

 

Are you driving home.........? Hahahaha great time bro, hope your head feel better.

 

That's a maybe, I mean my mildly modified 2002 made 107hp at the back wheels. 115 stock I doubt it.

 

i saw where someone had asked for the link to do the pair/flapper/snorkel mod so here is the link
PAIR and Flapper mod, with bonus snorkel mod for VFR
i noticed a huge difference when i did mine but i also did a full gut on my cans(which everytime i start the bike i am always smiling for some wierd reason) if you think you want to go ahead and just get rid of the pair which i did and dropped 5 lbs here is the link
Drainfade.com :: "To the end of twisties and beyond..."
no use in having something on your bike that you arent using. just keep it in your garage in case you ever feel the need to put it back on