Results are in. Picked my bike back up from the tuners. Took him almost 3 hours, 26 miles, and 1/2 tank of gas. So much smoother now. As some of you know, I installed 99 VFR Headers on my bike ( Catless Headers ) and already have several mods done before this one including Staintune Exhaust, K&N Air Filter, Power Commander 3, and 02 Sensor Eliminators. Heres my before & afters.
Before: 2004 Honda VFR800 (Staintune Exhaust, K&N Air Filter, Power Commander 3 "Running Cozye's Map )
After: 2004 Honda VFR800 (Catless 99 Headers, Staintune Exhaust, K&N Air Filter, Power Commander 3 "Dynotuned Map")
Vtec is smooth as butter, and the mapping at highway speeds should be any different than I was getting with Cozye's map w/o catless headers. Something I realized he did in the mapping is put a 4 in the 2000rpm 0% slot and a -8 in the 1000rpm 0% slot, to help remove the fuel injection delay, made a huge throttle response difference. Below is a link of the map thats on my PC3 now. Note: This made is designed for catless headers, I wouldn't recommend using it on stock headers.
Heres the map file: [image: Attached File]
Vtec_CatlessHeaders_Staintunes_K_N_PC3_No_O2s_.djm2.19KB
373 downloads
The max power numbers (100%) don't surprise me much, as the 9-10 HP has become standard VFR "header lore". However, your midrange improvements are quite significant! Those 40-60% numbers are huge! :beer:
I'm sure we're all interested in hearing your http://www.vfrdiscus...tyle_emoticons/default/+1.gif http://www.vfrdiscus...tyle_emoticons/default/+1.gif http://www.vfrdiscus...tyle_emoticons/default/+1.gif :squid: ride report. :goofy:
That 40% throttle opening jump is astounding to me. :thumbsup: I would be shocked if your fuel mileage didn't improve by at least 4-6 mpg. That is simply awesome. Do you have the graph to scan in and post so we can see the curve and RPM?
One of the service guys at the shops going to be emailing me a PDF file of the graph. I have a paper copy, but no scanner etc. He said he would get it to me after he got home tonight. :thumbsup:
WOW!!! :rolleyes: Kinda makes you wonder what the best 5th gen as pulled, may be we will put an end to all this 5th gen vs 6th gen stuff
And it is very likely that Jason got a "good" engine in his bike to start with. With the vagaries of mass production (even on the small scale of VFR engines) some will be better than others right from the start.
I believe that a proper break in (not a factory manual soft break in) of the new engine is critical in how it will perform over time. I know my cousins 2000 VFR that we picked up last month in Lutz, FL is stronger than my 2001. I almost felt on a back to back ride with him last week that his still feels stronger even with my new rear sprocket (+2). :o
Oh well, after a big bore kit and some work I will be satisfied. :beer:
Besides, I thought the larger diameter exhaust header that Jason was putting would reduce his midrange torque...I was wrong and glad of it.
That's pretty significant. I predict that this will be a VERY popular post, which in turn makes you wonder why at least one exhaust manufacturer has not had the foresight to come up with a full exhaust. When people are willing to pay a wad of cash for catless headers, it should be a no-brainer. Let's see, manufacture a full exhaust for a sportbike with a two-year development schedule or for a VFR that many owners say needs more power and hasn't changed for six years.
Thanks so much for this interesting post. It will definitely be worth following. :rolleyes:
I may have to through my catless headers on now! :rolleyes:
DUDE! Are your referring to the ones I sold you a few years ago? Do you mean to tell me that you never ever put them on? You lazy sonuva.......... :goofy:
As the originator of this mod :beer: , I've always wondered what kind of gains it made besides a faster revving engine and louder exhaust.
At the 2003 VFRevolt, Baileyrock and I did some rollons. :beer: I had the catless headers installed along with a tfi box and bafflectomied stock mufflers. We did a few 2nd gear rusn and we were about even so I thought the better sound and lighter weight were the chief benefits of the mod. It was months later that I realized I'm limp wristed sissy boy when it comes to a roll on. I only roll it to about 7 or 8/10th's throttle. DOH!!! Kinda' like a biological rev limiter.
If we would have switched bikes, I believe Kevin would have walked on me good but the thought didn't cross my mind to swap since we are about equal weight and there were too many good roads to ride.
DUDE! Are your referring to the ones I sold you a few years ago? Do you mean to tell me that you never ever put them on? You lazy sonuva.......... :goofy:
As the originator of this mod :beer: , I've always wondered what kind of gains it made besides a faster revving engine and louder exhaust.
At the 2003 VFRevolt, Baileyrock and I did some rollons. :beer: I had the catless headers installed along with a tfi box and bafflectomied stock mufflers. We did a few 2nd gear rusn and we were about even so I thought the better sound and lighter weight were the chief benefits of the mod. It was months later that I realized I'm limp wristed sissy boy when it comes to a roll on. I only roll it to about 7 or 8/10th's throttle. DOH!!! Kinda' like a biological rev limiter.
If we would have switched bikes, I believe Kevin would have walked on me good but the thought didn't cross my mind to swap since we are about equal weight and there were too many good roads to ride.
Who is this??? :rolleyes:
I don't know what your talking about. I did invest in some unobtanium metals a few years back that look to show some great returns! :thumbsup:
Thats pretty sweet. Interesting map. I always like to compare various maps. I predict it will use more fuel though, take a look at your cruising rpm ranges at 20-40% throttle. I think thats where a lot of gas is used. Report your mileage back.
Those numbers look great. I'd like to have seen a bone stock base run on the same dyno.
Thats pretty sweet. Interesting map. I always like to compare various maps. I predict it will use more fuel though, take a look at your cruising rpm ranges at 20-40% throttle. I think thats where a lot of gas is used. Report your mileage back.
Those numbers look great. I'd like to have seen a bone stock base run on the same dyno.
Thats pretty sweet. Interesting map. I always like to compare various maps. I predict it will use more fuel though, take a look at your cruising rpm ranges at 20-40% throttle. I think thats where a lot of gas is used. Report your mileage back.
Those numbers look great. I'd like to have seen a bone stock base run on the same dyno.
Wish I would have dyno'ed the bike stock also. At the time I had no intentions of modding anywhere near this extent, but you know how that goes. I'll report fuel milage tomorrow, can't ride today, gotta go pick up my g/f's new car 3 hours away <_< . Owe well. That was the agreement when I bought Jeremy's CBR Track bike Friday that +1 bike means +1 car for her :rolleyes: . Owe well what can you do!
Thats pretty sweet. Interesting map. I always like to compare various maps. I predict it will use more fuel though, take a look at your cruising rpm ranges at 20-40% throttle. I think thats where a lot of gas is used. Report your mileage back.
Those numbers look great. I'd like to have seen a bone stock base run on the same dyno.
Wish I would have dyno'ed the bike stock also. At the time I had no intentions of modding anywhere near this extent, but you know how that goes. I'll report fuel milage tomorrow, can't ride today, gotta go pick up my g/f's new car 3 hours away <_< . Owe well. That was the agreement when I bought Jeremy's CBR Track bike Friday that +1 bike means +1 car for her :pissed: . Owe well what can you do!
Jason, I did my 02 bone stock: 98.4hps - look in my gallery for the print out. I will have my bike dynoed today or tomorrow: Catless, Loe Vince without baffles and the PCIII (the map loaded at this time is the Remus) I would have used yours or Coyze's but I don't have my PC this weekend, so that'll have to do.
Thats pretty sweet. Interesting map. I always like to compare various maps. I predict it will use more fuel though, take a look at your cruising rpm ranges at 20-40% throttle. I think thats where a lot of gas is used. Report your mileage back.
Those numbers look great. I'd like to have seen a bone stock base run on the same dyno.
Wish I would have dyno'ed the bike stock also. At the time I had no intentions of modding anywhere near this extent, but you know how that goes. I'll report fuel milage tomorrow, can't ride today, gotta go pick up my g/f's new car 3 hours away <_< . Owe well. That was the agreement when I bought Jeremy's CBR Track bike Friday that +1 bike means +1 car for her http://www.vfrdiscus...tyle_emoticons/default/+1.gif . Owe well what can you do!
Jason, I did my 02 bone stock: 98.4hps - look in my gallery for the print out. I will have my bike dynoed today or tomorrow: Catless, Loe Vince without baffles and the PCIII (the map loaded at this time is the Remus) I would have used yours or Coyze's but I don't have my PC this weekend, so that'll have to do.
Well, most definitely not as impressive as yours: 102hp 55lbs of torque.
I know my PCIII is too rich because the power went down as the bike warmed up. (100.9hp on run 4).
Anyhow, the guy is quite nice, and lives near my home, so I'll go see him later next month. But I don't expect to be near your numbers.
SG
***Edit***
I should have mentioned that the gas I used was at least a month old. The R6 that was there before me went from 101hp last year, to 111 this year. The only real change was racing fuel. So, maybe wit a fresh tank of gas that will help.
I had the joy of riding Jason's VFR over the weekend and what can I say.... it feels like a beast. All throughout the RPM's it just wants to be mean but also predictable and most of all.... IT'S SMOOTH AS CAN BE. Seriously, what VTEC surge? What touchy throttle during low RPM in 1st gear? It's like butter....
In my opinion... this is how Honda should of released the VFR from the factory.
Hey guys! I manage to track down some used 99 catless headers locally. I installed them last week. I also gutted the exhaust, added a K&N filter and did the o2 mod. I am waiting for my PC3 to arrive in the mail from Hardracing.com ( $259 with a battery powered power adaptor for free!- this is the best deal i could find) I would love to use this map but am having problems reading it on the computer. I keep getting pop up messages saying;
"adobe reader could not open file because it is either not a supported file type or the file has been damaged. for example it was sent as an email attachment and wasn't correctly decoded"
Can anyone help me figure out how to use this program/read this file? Just a warning i am completely useless with computers!
PS. the 99 header and gutted exhaust sound real mean!!
Not sure if you got your problem fixed or not but sounds like you just don't have the Power Commander software installed on your computer. There is a change the file itself got damaged in the server transfer or one of the server crashes. Theres a working version of the map in the 'Downloads ' section of the forum. Keep us updated. Hope your enjoying your headers!
Mitja,
Thank you for your contribution.
I have a 2002 too, same configuration as yours. :biggrin: I would be very interested into your map, could you upload it for me ?
My continuously modded Cozye's is not as efficient as before the mods.....
Just in case anyone is interested a company called Black Widow Exhausts in the UK do stainless steel catless headers for the VTEC. Also they are welded like the originals not held together with springs like some other aftermarket headers. They are £195 inc postage to UK and come with al the gaskets and clamps for rear pipes. They are also planning to do a range of silencers for the VTEC as well. They should hopefully be available within the next couple of months.
I have just fitted a set of headers to my 02 and am planning on having my PC3 custom mapped when I have decided if I am going to fit a set of their cans as well.
Just in case anyone is interested a company called Black Widow Exhausts in the UK do stainless steel catless headers for the VTEC. Also they are welded like the originals not held together with springs like some other aftermarket headers. They are £195 inc postage to UK and come with al the gaskets and clamps for rear pipes. They are also planning to do a range of silencers for the VTEC as well. They should hopefully be available within the next couple of months.
I have just fitted a set of headers to my 02 and am planning on having my PC3 custom mapped when I have decided if I am going to fit a set of their cans as well.
Do you have any pics of the pipes? Specifically the internal welds.
Do they look like gorilla welds (strong but ugly) that block a portion of the gas flow or does it look like quality kit?
BTW, the exhausts that are held together with springs instead of welded typically make for better fitment.
End of thread · 38 posts recoveredWayback Machine snapshot 13 Apr 2016