Catalytic converter elimination kit

I would like to elimate the catalytic converter on my 2007 VFR800. I am not looking to gut the stock cat or weld/spice the stock pipe system. Rather, I am looking to install a complete bolt-on kit that deletes the stock cat.

Does anyone know of a catalytic converter elimination kit (along with part number) that is a direct bolt-on?

Thanks.

 

The only way I know of accomplishing this is by putting a different header on it. Your choices are an older Honda VFR header, a Delkevic header, http://www.delkevic.us/?section=sho...ers&variant=honda_vfr800_v-tec_2001-2013_3306 or a header from another manufacturer, as there are others out there, but the names escape me. Better get a Power Commander or the like to get your fueling right.

 

Like Lint said, if you delete the cats, a power commander is a must.

I put a set of delkevic headers on my 07 and running some Leo Vinces. Made low speed maneuvering almost dangerous with all the surging. bike overall felt super lean. the PCV cured all of that. in retrospect, i'd say if you're just after deleting the cats, may not be worth all of the $$$ invested. But if you plan on getting a PCV anyway, then whats another couple hundred bucks?

 

My bike already has a Power Commander V (with Auto Tune) along with a FMF exhaust system.

Is the Delkevic header a direct bolt-on ... or are jinky mods required to make it fit?

Does anyone know if the Delkevic header kit improves horsepower (assuming the Air/Fuel ratio is correct)?

 

the delkevic are straight bolt on. mine even had sensor bungs and center stand stop.

as for horse power, don't thing theres much to gain with them. theres some threads concerning flow and dynos floating around somewhere. I think the only benefit is the weight savings. my memory is rubbish, but a rough weigh in with a fishing scale when I did my swap, the delkevics were lighter by a moderate margin.

 

REEK (or others),

The Delkevic website is pretty vague on the specifics of the header kit so,

1. Do you know if the Delkevic pipes are larger diameter than stock?
2. Do you know if the Delkevic pipes employ smoother (better flowing) bends than stock?
3. Do you know if the Delkevic pipes route in a different way (thus generating better flow) than stock?
4. The stock front header pipes cross over near the oil filter area. It looks like the Delkevic kit does not do this. I'm wondering if this is done to improve flow, provide easier access to the oil filter (during oil changes), or what?

 

don't have the thread reference on hand but there is a thread somewhere on her or the other VFR site that answers all of the above. But overall it says flow may be not as good as the Gen 5 non cat headers. the gen 5/6 are interchangeable btw.

in general the Delkevics seem like exact replicas of non cat OEM headers, just in stainless steel. I've had 5 different Delkevic headers so far. a 91 zx7, 93 ZX7 - to replace rusted out OEM, 2001 ZX7R, my 93 VFR - has the resonance box just like OEM, and my 07 VFR. Comparing to the OEM they replaced, minus the 07 VFR, all of their headers were pretty much stainless steel copies of the OEM headers. Diameters of tubing (inner diameter) was even pretty much the same. I don't remember exactly but I think the 07 VFR headers I got were for a 99 VFR so the diameter was slightly bigger than the 07 but same as the 99.

Again, going off memory on all this. beware, I drink a lot.

 

I did some looking around and noticed that indeed the Delkevic system is different than the early VFR non-cat setup.

1. the front cylinder pipes do not cross like the stock system
2. the area where the four exhaust pipes converge looks totally different than the stock system

Now, whether or not this makes any difference in power output is unknown.

However, what I do know is this ... to buy a stock (early VFR) style no-cat header system is $500+ ( http://www.2wheelpros.com/oem-parts/2007-honda-interceptor-vfr800-muffler-assembly.html ).
However, the Delkevic system is $280 ... and it looks waaaaay nicer ( http://www.delkevic.us/?section=sho...ers&variant=honda_vfr800_v-tec_2001-2013_3306 ).

 

yeah, the delkevics on my 07 are the only set Ive bought that are different from oem. the front pipes crossing over issue occurs down the line I believe, if I remember correctly. during my futile attempt at some bike weight loss, the price of these headers was my main reason for getting them. so far they've held up great.

 

I think there are two styles of Delkavic systems. A couple of years ago when I was considering buying, their website showed a picture that looked just like a 98-99, no cat. Then soon after it changed to something totally different, four pipes into a collector. Not sure why they would change, the first one looks like it would flow better.

Both are plumbed different from my 2000 stock pipes, as the front pipes don't cross.