Member record · ID 44125
gropula
33 posts recovered 5 threads started First seen 1 Feb 2022 Last seen 2 Jan 2026
Threads started
5 in the archive- Carbon deposits and oil burning gropula · 24 Dec 2025 – 16 Feb 2026
- Healtech quickshifter - blipping issue gropula · 8 Jul 2024 – 8 Jul 2024
- VTEC intake valve huge clearance gap. gropula · 30 May 2023 – 9 Jun 2023
- Variable length velocity stacks gropula · 22 Jan 2023 – 21 May 2023
- Noise after cam chain tensioner replacement gropula · 1 Feb 2022 – 3 Feb 2022
Recent posts
All 33- VFR 800F, 8th gen RapidBike module (EVOxRace) and ECU flash I love mine as well but the autotune clearly doesn't work right. I have the Bluetooth dongle as well so I can data log the AFR, RPM and TPS. The autotune reacts to throttle input enrichment by enleaning the mixture.…
- VFR 800F, 8th gen RapidBike module (EVOxRace) and ECU flash ECU flash is always better than piggyback systems like rapid bike or power commander. The tuner has full control over IAP, TPS and ignition maps. Rapid bike Evo can only do adjustment on the TPS map and the racing…
- Carbon deposits and oil burning Hi, it's me. The guy with the weirdest issues ever. It's a long story, but has been resolved. Enjoy. I bought the bike for cheap with 57k km, four and a half years ago. I changed the plugs at 72k km. Noticed the plug on…
- Gear indicator Healtech has great products and I use their speedohealer and quickshifter. However, the price premium on the gear indicator isn't justified when compared to ebay or AliExpress gear indicstors which are dirt cheap. I…
- What is your prefered air filter? The one I bought had HA8098 written on the bag. Problem is, online retailers put generic pictures of either type with the same part number so I couldn't know which one I'll actually get. I waited for a new, sealed one…
- What is your prefered air filter? My bike had the smaller K&N when I bought it. I swapped to pipercross for a while, but then I found the big K&N so I bought that. The difference in the size of the filtration area is very big. The most important…
- Yoshi style velocity stack and stock Throttle body. No, but I've tested the removal of the snorkel and open top airbox at full throttle in 3rd gear. Snorkel removal gave a miniscule improvement with a nice bump in intake noise. Open top made no difference compared to…
- Yoshi style velocity stack and stock Throttle body. I tested the double stack arrangement as a part of my variable velocity stacks project. Link to my thread My testing showed that the gaps of 1cm and 2cm produce less overall power than no gap (basically a single long…
- What did you do to your VFR Today? Used the winter months to replace fluids in my 02. Changed the engine oil and filter, fork oil, dust caps and oil seals, brake fluid and brake pads on the rear. Coolant is a year old so I skipped that. Noticed the rear…
- Brake feel - can it be improved? How about just replacing the front ones? I don't care about the feel in the rear brake or the responsiveness of the combined portion of the breaking. I'd like to have a better feel in the front. I'm thinking of taking…
- 2004 Honda VFR 800 Interceptor Stator/ Regulator Rectifier Hardwire? Hardwire it and upgrade the regulator rectifier to sh847.
- Fuel injection issue I agree with VeeEffArah. A bike that sits for a long time will probably have clogged injectors. Pull them out and have them ultrasonically cleaned and preferably flow tested.
- Healtech quickshifter - blipping issue Hi, I installed the healtech quickshifter on my '02 VFR 800. It works great on upshifts. Problem is, when I pull the clutch and downshift I usually do a throttle blip. The thing is, when I do the throttle blip the fuel…
- what have you done in the hope of increasing the powers [image: image.thumb.jpeg.2238c8d4cb8dcfb8189d6d058cec0ee0.jpeg]Taken from VFRdiscussion headers thread. 8th gen, blue is stock. Stoich, flat as a pancake. Red is headers, green headers with fuel mapping. I was baffled…
- what have you done in the hope of increasing the powers 18 hours ago, IanSummers If two valve operation cost power at low rpm, that would mean that the VTEC mechanism was included solely to increase the perception of performance when VTEC hit (by way of an artificial power…
- what have you done in the hope of increasing the powers 16 hours ago, Timuli The engine starts well when cold, but not so well when warm. That is usually a sign of valve clearances being tight. What were the clearances? Did you increase the lift by grinding the base circle…
- New 5th/6th/8th gen performance header now in production in USA 10 hours ago, ShipFixer I think you guys talking apples and oranges. The FB groups are mostly looking at the BW and Delkevic headers , which are a different design and suboptimal. The VFRD ones are way better. For…
- VTEC intake valve huge clearance gap. I've made a mistake, I've put the VTEC slide pin holder upside down when I pushed the pin in. The valve clearance is in spec. The valve isn't binding anymore, so no worries about it being bent. Although it's still…
- VTEC intake valve huge clearance gap. I assumed previously that a bent valve could be from over-revving the engine. If someone rev'd it to 14k in a bad downshift and only this valve floated it could have gotten hit by the piston. All other valves are fine,…
- VTEC intake valve huge clearance gap. I did a ghetto leakdown test with what I got laying around in the garage. Put some valve cleaning liquid on the intake valves, blasted air trough the sparkplug hole. The valve is leaking, as predicted. [video:…
- VTEC intake valve huge clearance gap. Starter valve sync has been done by a mechanic, he didn't say anything was out of the ordinary. Although I visited him because one of the starter valves was broken, so it would have been all over the place either way. I…
- VTEC intake valve huge clearance gap. Hi, all. Bit of background first. Bought bike 2 years ago. Battling high fuel consumption for a long time. Did some stuff like new pressure regulator, cleaned injectors, found and fixed bad grounds etc. All had a small…
- I am going to shut down vfrd soon 3 hours ago, bmart Thank you for doing this for us for so long. Is there any chance to get a download of all of it? I use it often to search fro solutions...or problems. I'm so sad to hear this website will shut down.…
- Variable length velocity stacks Made a bit of progress. Video of stacks Just need to fix this securely and wire up the RPM activated switch. I made a more understable graph from the measurements. The first graph is the force that accelerates the bike…
- New 5th/6th/8th gen performance header now in production in USA I was just grinding until they fit. The flanges that hold the studs protrude slightly so I ground off more where they interfere, making the gasket somewhat oval. Those 40 mm OD gaskets have 32 mm ID, and about 30 mm ID…
- New 5th/6th/8th gen performance header now in production in USA Regarding the gaskets that go between the primaries and the cylinder head - delkevic is out of stock again. I tried finding an alternative. These will fit with some grinding EBAY LINK . They measured around 42.2mm OD so…
- Preparing for a longer trip - the regulator: what was up with it again? Replacing the stock R/R with series type like SH847 and running the charging wires directly to the battery with a 30A fuse should do the job. Soldering and/or crimping the stator connector removes one common failure…
- Variable length velocity stacks Got an update on the build. The weather improved and I've been able to test the various positions of the stacks to determine the best performing lengths and corresponding rpm ranges. Unfortunately no dyno time, but a…
- Variable length velocity stacks The movable stacks slide on long bolts straight up and down, so they can't follow the arc alongh which the lever arm moves. By having stacks slide on bolts they are always in the right position, and the lever and pivot…
- Variable length velocity stacks Hi, all! I'm in the process of building a set of variable length velocity stacks. Inspired by mohawk's yoshi style velocity stacks and variable systems built by MV Agusta and Yamaha I've decided to do something similar…
- First Aid Kits I have a small first aid kit that fits underneath the seat. One of the few things that can actually fit there. It's the palm sized variant.
- Noise after cam chain tensioner replacement I guess I'm being overly cautious, after i reassembled everything and took it out of the garage it sounded alright. Did a small test ride just to confirm. It was probably just the garage amplifying the sound of the…
- Noise after cam chain tensioner replacement Hi, all! I've had the familiar noise coming from the cam chain while idling and during warm up. Figured it was CCT's. Ordered OEM from E-bay and replaced them both, didn't remove the throttle bodies, just the airbox for…
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