By the sounds of it you have the same kind of "mod" that was done to my bike when I first got it.

You'll need a new airbox base plate, and the rubber engine flap.

Also as mentioned above, get a look inside the carbs to see what you are running

Haha sucks doesn't it they should leave the beast alone, ok yea new airbox base plate ordered where can I get the rubber engine flap ? And yea I will have a look in there too cheers.

Try eBay for the flap, or put a wanted ad up on here

gavins wrote:I think he already said in his prior post in another thread that the intake/airbox was stock, he also neglected to mention in this one it's restricted to 47bhp. It does sound like an intake issue though, missing the air scoop perhaps.

How is it restricted, inserts in the carb rubbers?

If they are missing you will need.....

Rubber flap thingy...(http://www.ebay.co.uk/itm/Honda-VFR-400 ... 53f2f16c3c)

Air box snorkle thingy.....(http://www.ebay.co.uk/itm/honda-vfr-400 ... 5d3fec784f)

As has been said - put it back to standard (Honda knew what the were doing) and once the air supply is sorted check how it goes (much better I suspect) and if needed re-jet the carbs to suit the exhaust.

Yea it's restricted by the carbs, cheers monkey gonna have to invest in one of them too . Cheers NGneer will have a look round for someone breaking a nc30 nearby. Yea I hope this sorts the problem too, and will check the jets cheers. My bike has been fitted with a radiator coolant bottle at the front (doesn't have the normal coolant bottle under the seat) how do I go about checking the coolant level can I just open the radiator cap and check that way?

Hi all, just checked main jets it has 120s in rear and 130s!? In front the bike has 47hp restrictor fitted and tyga can is this correct jetting?

That is miles out

You want something like 110/112 or maybe 115s...

Jesus 120 rears and 130 fronts, idealy it should the rear that has bigger jets and smaller at the front read the carb thread on here, thats going to be running so rich and then air restrictors in the carbs aswell.

Kennon

Hahah yea that's normally the case larger ones at the rear, think I'm gonna have to get some new jets in there