I purchased the bike used. The previous owner had installed a Yoshimura R-77 full exhaust on it, as well as some cosmetic mods. I installed a K&N high flow air filter and the PCFC. I only purchased the PCFC because I was concerned about the bike running too lean with the full exhaust and the stock fuel mapping. Whether it was running too lean or not is unknown but most of the comments on this site as well as others cautioned that installing a full exhaust without doing anything to the fuel mapping was a bad idea and might damage the engine.What mods do you have done to your bike, full system exhaust?
The PCFC will access the same fuel maps that are available for the PCV. So Dynojet's claim is correct as far as I know. Regarding the lack of change in power or throttle response, I should mention that I don't race my bike. Perhaps if I took it to the racetrack and ran it a full throttle I might notice an improvement. But I ride in the city and on the freeway, and in both cases, I didn't notice any change, at least nothing significant. Keep in mind that all you will get with a full exhaust and fuel mapping is 2-3 HP gain which will be subtle, and that is with a custom fuel map developed on a dyno for your specific bike, as opposed to the generic map from Dynojet that they developed for their bike. There are other fuel mapping options such as getting an ECU flash which provides more than fuel mapping and may unlock some additional power gains - I can't comment on that because I haven't done it myself.Really thats weird? you havent noticed a power increase or throttle response, They claim its the exact same thing as PCV but without the feature to add accessorys.
Keep in mind that when I purchased the bike, it already had the full exhaust installed. I've never ridden this bike with the stock exhaust. So my comments about not seeing any noticeable improvement in power or throttle response are comparing full exhaust without power commander vs full exhaust with power commander. That's all I can compare. I have no doubt that going from the stock exhaust to the full exhaust greatly improves the fun factor.everyone I’ve seen on YouTube and a few people on here they all say a full system and a power commander makes the R3 feel like a brand new bike
I have deceleration popping when above about 7000 rpm and I cut the throttle. I don’t mind it - no flames though! Personally, if you’re not concerned about HP gain, I would keep the slip on. A full exhaust and Pcfc is a lot of cash to fork out to get deceleration popping.Makes sense still deciding if I should get a full system and a PCFC because right now I have a slip on but I don’t know if it’s worth I don’t care that much for hp gain I just want the nice backfires and make the bike more fun