Dorian

What a bike. Seriously impressed. Not just the supercharger but the whole build. Amazing work.

2007 VFR800 VTEC Motad downpipes, Staintunes exhaust View File Custom map for a 2007 UK VFR with the following mods: - Staintunes cans - Motad catless downpipe/headers - PAIR valve blocked - o2 eliminators Submitter Dorian Submitted 02/15/2023 Category Power Commander Maps  

@ShipFixer I think I've tried this before and didn't notice a significant difference. Just to check, it's basically turn the key but don't crank, wait for the pump to prime, then key off and on again and crank immediately, before the pump has primed?

Thanks. Where are you based?' I'm in UK so will be getting European spec. Aiming to get a late low mileage model so good to hear you don't think the later models ride any worse.

Good to know thanks. You're right I could balance the starter valves. Injector cleaning could also be due. But I don't do my own maintenance beyond oil and filters so it could get pricey and I've already spend nearly 400GBP on the PC and map. Think I'm done with spending tbh, time for a fresh start. Sounds like the 5th gen rideabilty and throttle response starts from a better place though. That combined with no VTEC is a positive. I'll have to test ride to see how the gearbox is. On the 5th gen the later models are closer to the 6th Gen, having wax unit, cat and o2 sensors. Has anyone ridden both models and how do they compare?

I've got a 2007 Gen 6. Long story short it had a full catless stainless steel exhaust when I got it, but no other mods, and as expected the throttle response was really, really bad. PAIR and o2 eliminators made a big impovement. PC5 and custom map improved it a bit more. Even so, I don't really like the way it rides. 1. Even with the improvements made, throttle response is still average at best 2. The gearbox is quite rough when doing high RPM upshifts under full throttle. Someone else I know with way more riding experience than me has this on his 2009 so it's not my bike or technique. Before finding this bike I was actually searching for a 5th gen but couldn't find the right one. I had a sit on one yesterday and liked it a lot though. From researching around, people are saying that 5th gen throttle smoothness is generally better than the 6th gen. But what's the story with the gearbox - is it the same gearbox between the generations? Struggling to get a test ride anywhere so having to research as much as I can in advance. Thanks

Guys - sorted it! As in the bike now starts. Took another look at the connection and the negative was a bit loose, causing the Power Commander ground wire not to properly connect. Sorted that and she fires up! Phew As expected the heated grips don't work, that's going to need the other cable repairing, but at least the bike runs now. And as ever, she sounds good.

Edit/correction: it's a black wire with some red taping/insulator over the end. There was a circular connector but that's the part which has snapped off during battery disconnection. I'm still leaning towards it being the heated grips. There's two extra negative/ground wires under the seat - one for the Power Commander and another that I also think is for the grips.

Does a VFR800 VTEC have an extra, smaller, lead at the positive battery terminal as standard? Mine has one and it's snapped. Assumed it was for the Oxford heated grips, so not critical to fix. However, the bike won't start after standing inside for 2 months over winter. It cranks strongly though.

Ride both and see which you prefer. I'd pay attention to fuelling (aka throttle response) and check you're happy with it on the 6th gen. Some of them can be extremely choppy. On riding position I'd say the VFR is a bit too forward for the type of bike it is. My other bike has a much more forward riding position, but my leathers stick me to the bike better and the high rearsets put my knees right under the tank so I'm locked in and there's no option but to use core muscles. On the VFR I wear textiles and it's a bit easy to end up slouching on a long ride. I'd recommend bar risers. The VFR is very comfortable and quick, and handles great. Good fun for short blasts and very capable for long rides, so a good choice.

I forgot to update this thread - took the bike to an experienced indie mechanic who did a proper test ride. And he thinks there's nothing wrong with it. This of course leads to the question of what I'm doing wrong with my gearchanges, but I don't think it's me. I've tried slow changes, fast changes, it doesn't matter, the gearbox is just notchy. He's adjusted the chain, but now it seems tight because it's clicking as I push it round the garage. Sick of it all now! Along with the gearbox and the fuelling (which is improved with my mods, but still not great in my opinion), I've pretty much had enough of it. Considering my options for a replacement. From reading around, there's a majority of happy VFR VTEC owners, and then some who aren't happy with the gearbox or the fuelling. I'm in that minority unfortunately.

It's got a gold EK chain so has been changed at some point prior to me getting it earlier this year. Chain looks in pretty good condition, and sprocket teeth look ok to me as well. It's a good question though, I am thinking of starting there and replacing them all. Finally found an indie mechanic that will test ride it, going in tomorrow. Really hope he can sort it, then I can get on with the other things I have planned for the bike like syncing the starter valves, private number plate etc.

Back with another update and I'd appreciate any feedback. The problem persists. High RPM upshifts to gear 3, 4, 5 (and probably 6) give me a crunch through the lever. No noise, but it's something I can feel with my foot. The shift lever is fine (not loose), and the chain and sprockets look fine too. Low RPM shifts are fine, and downshifts are all fine. The problem may have developed when I put Shell Advance Ultra 10w40 in the bike, although that oil is 4Y and MA-2, so it should have been ok. But switching back to Honda dealer's 10W30 oil hasn't resolved it. The other possibility is that the clutch plates are sticking slightly. However, there's no issues with the bike creeping. I think the total possibilities are: 1. Chain and sprockets 2. Worn gears 3. Clutch Any other possibilities?

Thank you! Still loving the VFR. Nice collection of bikes you've got there 🙂