Do you need to actually remove the pair system ? or can you just block the pipe off where it emerges in the airbox, I think this is one for you Arthur
You can block it mate as many do in the US as they need to pass CO tests at the MOT, it will stop most if not all the overrun-popping if you have an exhaust fitted but no other gains other than some Kg's lost.. Needs blocking if you have Autotune or handy for the dyno opp too, other than that.... Some push a marble into the pipe so easy to remove..
Motrac capped mine off Arthur, with a rubber cap when I had it mapped on Monday. I wonder what the hell he was doing until he explained it to me... It's still capped off now, I think this has no detrimental effect?
I bought mine on eBay from America .... and I have seen the same ones since then from Demon Tweeks in the new catalogue
I think I'll block it off in the airbox, I've got a rubber cap to fir over the tube in the airbox and I'll fix it with a Mikalor spring clip so it doesnt pop off, should stop the popping on the over run, I have an R77 fitted which is loud enough already lol
I havent done the blade but i have done the SP and i just cut down the pipes and filled the ends with some tiger seal left to harden and refitted. I havent heard of many doing it on the fireblade is there much difference nutty. ??
To be honest I didn't back to back dyno test before and after and It didn't feel any different . I have read other reports that say maybe a couple of BHP . So hardly worth the effort if power is your objective . But the best bit is a decent weight reduction .. better access to the spark plugs .. and better results on the dyno
Makes no difference at all, impossible as the air enters the system after combustion! People that say they gain bhp are on the sugar pill! Weight is the only gain....or loss....lol Its job is to add fresh air into the exhaust system to help burn off part burnt fuel, the result is less hydrocarbons and a cleaner exhaust gasses..
Well I can see a possible small gain as one of the pipes breathes back into the air box ... so a cleaner air supply ?????? maybe
It takes clean air from the air box then feeds the air into ports with the small reed valves (they stop blow back) into a vent that exits just after the exhaust valve, shutting it off you could argue that the ecu will try and compensate for a now richer afr as the o2 is now lower BUT the narrow band sensor that helps control the closed loop zone is VERY limited so doubt very much it has any effect at all even in the closed loop 1k rpm to around 3.5k rpm on a stock bike, if you have pcv and a o2 eliminator then thats fixed anyway and the close loop lambda plays no part in the euro3 closed loop anyway. Sorry about the lame discription but on my phone and lazzy typeing...
Got a link Craig. I m doing it to my SP2 not for power gains but weigh reduction. Arthur I understand everything you have said and I m not looking for power gains but if you stop taking air from the supply side to feed into the exhaust does that not mean you have more induction air flow like a k&n filter would do and therefore a small potential for power gains. Just a thought your expert opinion would be appreciated.
eBay - The UK's Online Marketplace As arthur says, its not for power gains, but for weight loss & ease of access. plus it helps with dyno runs and setting it up 'on the fly'
Hi blade, no mate the air is taken from the air box as its an easy place to get clean filtered air to use in the PAIR/SAS system (pulsed air induction) its like I say only to ignite any part burn fuel to reduce emitions.. also can help cats to function well. When you think about the physics of fire air, fuel, heat the air has an important role to play in euro3 laws with out the air any part burn fuel leaves the system and enters the atmos..
Arthur, so blocking the pipe of permanently has no detrimental effects to the bike? As said before, Steve blocked mine off with a cap when he dynod the bike to set the AFR properly. It's still blocked of now... Will the map make a difference to a map done without blocking the pipe?? i.e if i was to share the map with the same bike set up, but capped and uncapped pipe? Thanks.
It will do no harm mate, the only thing that people would question is did the dyno opp block off the pair system when there bike was mapped, you know yours was done so your map is correct.. the reason they have to block it is other wise the dyno sensor reads the extra air in the exhaust and gives a false reading! Once blocked the afr can be read correctly.. other wise you will end up with a rich fuel map as it will be adding fuel to cope with the extra air.. your all done mate..
