YOSHI GP FORCE SLIP ON, BADGES

*ronmorgan* · 02-14-2009, 11:52 AM

Hi all, i recently bought a gp force slip on end can for my 05 blade, when i took it out the box i noticed that the yoshimura badges were on the end of the can where it meets up with the link pipe. I thought this was odd as every other one i had seen had them at the outlet end, also once i fitted it the badges are virtually unnoticable. However after trailing through various sites to find pics i think i have the answer. The gp force is the road legal type with removable baffle whereas the rs3 is race only. Could it be that yoshi reckon if you are fitting a road legal can then you will automatically re-fit the standard exhaust cowls and that the badges would be obscured, so they put them on the other end. The rs3 in comparison has them at the outlet end, but then again they are race only and yoshi probably think that racers won't re-fit additional weight. Anyone came across this ?.
cheers
ron

bert1812 · 05-22-2009, 4:45 PM

Hi Ron
Have just bought a Yoshi GP-Force end can and pipe for my rr5 blade. Just arrived today and must say the badges on mine are at the outlet end.... (now I wonder if I should be worried!!!).
Got it off ebay and all loooks fine apart from the two springs for the can and pipe slip on assembly aren't there (although I'm wondering if the standard pipe has springs and I can use these?). Also, the removeable baffle is such a snug fitI can only insert it into the spout about 1/3 of the way. Even at this, it has proved a bugger to pull back out. The two holes for the securing nut and bolt never get near each other.
As I say, I've only just got it so need to spend more time checking it out but wondered if you had any advice?
Also, no fitting instructions!
Cheers
Rob

prince07799 · 05-28-2009, 6:28 PM

hello ron, i've got the same can as you and im sorry to say the standard can has no springs but they only cost around £4 each and you will need 3 in all, my local honda shop got mine as mine was from ebay as well. to get baffle in try grinding a small amount of the thickness away from the base and get can hot and spray both with wd40 make sure to line holes up and it should go in. hope it helps a bit, cheers rich

bert1812 · 05-28-2009, 6:38 PM

Thanks for that Rich. I have now fitted the GP Force and got the missing springs from ebay so the whole system is now good to go. WHen I started her up I was happy (but not blown away) with the change in sound. A little more aggressive sounding than the standard but no V-Twin by a long way! I never completely removed the exhaust valve cables, i just tie wrapped them behind the injectors under the tank so the ends were still fee to move. Do you think thats okay?
The problem I now face is that apparently I need to fit a Power Commander to get the bike running properly with the new setup. I can't believe how expensive they are!!! I only wanted to improve the 'sound' of the bike, as the standard power is plenty for me, so £250 plus seems a bit on the extravagant side. Trying to decide now whether to bite the bullet and buy/bid for one or jsut go back to the standard system and sell the yoshi on...... ahhhhhhh!!! (when I bought the blade last year I swore blind to the missus I was happy to keep it standard and wouldn't be tweaking it in any way.... ooops)
Rob

prince07799 · 05-30-2009, 10:16 AM

hello rob, i must agree about the sound its not the best but its not a bad thing with the fuzz about! I've been running my can for about 3 months now with out a power commander and it runs fine with the baffle out. m.o.t due in next few weeks so its got to go back in for a day at least. i did remove the cables but can'nt see a problem with how you've done it. all i would do is take the bike out on a road you now well with afew good bends in and see how you like it, make sure you chain is not to lose as it seem to give to much play in the throttle, let me now you go on with it all. cheers rich

bert1812 · 05-31-2009, 5:44 PM

Thanks for the reply Rich
Took the bike out this afternoon on a familiar stretch of abut 15 miles of good scratching territory. I was pleased to discover no major differences (of a negative kind that is) apart from possibly a slight bit more dwell in the throttl eresponse at times (only marginal and I could have ben imagining it!!) The sound improvement wasn't completely unnoticeable and at a couple of junctions when pulling away hard I'd even say it sounded spot on, so overall, I think the verdict is that I'll keep the yoshi on and maybe put off on the PC3 purchase for a while. (Although have found a second hand one for £180 which is still too much but curiosity keeps naggig me to find out what a difference a PC3 would make.......) I got a few other bits of advice from some performance tuners about running a Yoshi pipe without a PC3 and it was interesting to hear one guy tell me I'd experience 'searching in the revs at tick over' (which so far I haven't had - have you experienced this?) and another guy told me I'd be down on power by about 5bhp which although I couldn't measure, if anything I felt the bike had a little bit extra punch particularly at mid revs and up... (exactly where the Yoshi is supposed to work as I understand). The iunteresying bit was that neither chap told me the same info..!!!
I'm no techy with this sort of thing really and I'll take them at their word. I just enjoy getting out for a hard ride when wife/kids/work allow...
By the way, have you removed your aluminium heat shield from under the seat? If so, have you lined with adhesive heat-shield/tape?
Thanks again
Rob

prince07799 · 06-01-2009, 3:38 PM

hello rob, Glad the can is not to much of a disappointment after all, as for the pc3 if you was to get one you would be best to get it set up by some one in the know in stead of from just a laptop download, cmc (local bike shop) have a dyno and its £125 to set up properly then as your at it it would be better for a new air filter as well, got told a k&n is about £70. so with you £180 for pc3 it not cheap for an extra 5b or so bhp. i had my 636 set up a dyno jet it and time on a dyno an it does make a good difference, have you tried it with baffle in to see what it's like? as for "searching at tick over" never heard of or had it with my bike. i have removed the heat shield as it looked a bit crap with it on, my can is the titanium one and ive noticed the it doesn't seem to get overly hot compared to stainless, so until now all is ok with wires and such under seat so you should be ok, yoshi do a heat shield but its about £120! so i bit more for you to think about. on a different note I'm due some new tyres in a bit and thinking i might get something different to the bt16's ive got (mint grip all round but only getting about 2500 mile out of rear) just wounded what you run or heard are any good? cheers rich

bert1812 · 06-01-2009, 4:57 PM

Thanks again Rich
Interesting quetsion about the baffle... What difference do you think it could make (not tried it yet). Don't really want to muffle the sound but will try the baffle in place. My can is also a Titanium so think I'm going to remove my heat shield as well I reckon. Have seen a few varieties of adhesive heat shield on ebay but probably aluminium tape is as good as anything if I end up needing any. Think I'll probably look for a tail tidy (R&G looks good, or Harris). Any thoughts?
As for my tyres, I only got the blade back in October 08 and still running on what was fitted. A BT14 rear and a BT12 front. They just don't seem to get so sticky but do seem to grip well and hold their place in the wet. I'm probably due a new front soon and was wondering what to go for. I don't really do a high annual mileage (married plus kids...) so not such a concern about tyre life I guess. Have been interested in the Diable Supercorsas but don't know anyone else with a blade to swap notes with!! Got myself booked into a race school at Cadwell Park this summer so really want to get the most out of the day so will be keen to hear of any advice on tyres.

prince07799 · 06-02-2009, 2:46 PM

hello rob, always happy to help if i can? the baffle should increase the back pressure and make it a bit more like standard can (and make it legal). ive yet to put mine back in so its only what ive been told, (m.o.t due this month so its going to have to go back in or a day at least). i have a r&g tidy tail fitted and it makes the back look at loads better so would recommend on that one. as for tyres you should run matching pairs, ive not tried supercorsas but heard good things about them (don't think they last very long) but think im probably just going to stick with the bt16 as never had a problem wet or dry and should be good for cadwell, when the race school run? cheers rich

bert1812 · 06-02-2009, 6:26 PM

I just missed out on a new Harris tail tidy on ebay I'd been watching for a few days. It went for £25!!!
I used to own a Suzuki TL1000R which was a stonking v-twin (bit of a marmite bike really) but I had metzeler sport tecs fitted and they were superb on that bike. Dead sticky and good enough in wet but not a particularly common tyre and not necessarilysuited to other bikes i guess.

Praying for good hot and dry weather in August for the Cadwell event (last few years in August haven't been particularly memorable though wether-wise, so fingers crossed etc). Martin Hopp rider school (Hopp Rider Training - Advanced motorbike training, on road and on track.) do a really good day there and I've heard lots of good stuff from others who have been. Not sure I'll be getting air under my front tyre on the mountain, but will be a good experience. A little mental than a standard race day with the bonus of loads more track time and good instructor feedback throughout). I know a guy (a local GP) who did a race day there and hated it (too many maniacs). He subsequently did a Hopp Race school day and since then can't stop going to every track day available. He wipes the floor with the idiots cos he knows how to ride the circuit properly rather than the typical rider who rides flat out on evry straight, only to nearly come to a relative stop at every bend. Apparently progressive and smooth is the key to fast laps. We'll soon find out! Just seenan R&G Tail tidy with mini indicators on ebay I might have a bid on!!!.. cheers Rich, let us know when you do get the new tyres. rob

bert1812 · 06-10-2009, 6:59 PM

Hi Rich
Just been out to the garage and removed the heat shield (at last!) Looks much crisper now although I'm a bit of a fiddler and evry time I check the pipe out from the back I reckon its slightly off to the left of centre.... grrrr (I just know its gonna nag me now but don't wanna have to strip back down to adjust connections. Its only marginal but now its on my mind!!!!!!!!) Work's been a priority recently so no time for bike stuff til now. Missed out on all tail tidies on ebay and now there's nothing (reluctant to pay new prices if poss!). You got your tyres sorted yet?
Cheers
Rob