As above really - should I bother? ISTR people saying that stage 1 isn't really worth it and that it's worth making the effort to go to stage 2. Is that right? And if so am I right to think that I need to buy a K&N filter [DU-0900, c£60] as well as the Dynojet kit [DJZ-7203, c£90]? The bike has carbon Termis. I'm not particularly looking for any great power gains, but I've heard it said that it smooths things out. Would be grateful to hear from anyone who's done this.
If you've never properly serviced /overhauled your carbs I'd almost guarantee they'll be worn and not performing fully, the one thing that always gets overlooked is the emulsion tubes which tend to wear oval and will cause rough running & poor mpg putting new needles in to worn tubes will not improve the situation Factory Pro Factory Pro, Keihin, Mikuni, Hitachi jets emulsion tubes needle jets do a plated tube which vastly improves wear rate not sure if dynojet have an equivalent, jet kits from either firm a re really just down to preference Stage 1,2 or 3 on a 750 is not going to yield any huge power gains, but will when tuned properly give you a smoother more responsive motor, if your doing all this then yes the K&N is worth it, The only way you are going to get this all spot on is by spending time on the dyno getting it dialled in properly the kits can only give you a recommended starting point and will almost never be correct straight out of the box
I have ridden a 900 with the dynojet kit, couldnt tell you what level but its definately a wee bit better than standard, smooher and responsive. If you get a k and n, open up the airbox lid too. Youre prices are a little high. I got my filter on ebay fkr anout 40, ive seen the jet kits for about 70-80 on there too. Thats for new. Whynot save for flatslides mwahahaha! They truely are awesome. Your bikemust sound awesome with Termis?
I run my 750SS with a Stage 2 Dynojet kit; standard air filter (probably not OEM, though); straight through zorsts (which aren't that loud); and the airbox has just got the trumpets removed...........as far as I'm concerned it accelerates really well for a 750 (although maybe not as quick as a Jap multi, but bear in mind I have owned and used many bikes so I should be able to judge).......... ....what the carbs needed was a damn good clean.
If you remove the trumpets its probably a wise move as it saves cutting the lid and the trumpets will be the most restrictive part. Lids can fetch silly prices should you cut then wish to return to standard.
Thanks for these replies gents. Food for thought. I do wonder whether I should just hang on and shoot for some Keihin FCR39s in the future.
The biggest improvement I made to the standard carbs was to fit the Factory Pro carb kit with the new emulsion tubes, springs and needles. Runs much smoother throughout the Rev range. Next stop is a pair of split FCR41's
