From my research it seems that the stock PZ30 when tuned properly is adequate for these 250's when basic bolt-on mods have been performed like air filter, exhaust, cdi, timing key, etc. When you did into the engine internals such as port/polish, cam, increasing bore, etc then its time to move up to a carb like a PE30/PWK30.

But i'd love to hear opinions on this.. on my Brozz, i didnt jump to the PE30 until i had the port/polish work done.. prior to that i was running a tuned PZ30 with exhaust and air pod

Added a rev box orange CDI and spark plug wire I picked up off Amazon.. Also removed the side plastics, i think it looks more sleek now..
Note: the plug wire that comes with this kit is a bit on the long side, so I zip-tied by the horn to prevent it from melting

PSA: went for a ride today and she stalled out on me while riding.. Couldn't get her to start after.. I opened tbe gas cap and heard the pressure release.. It seems the fuel cap vent valve was installed wrong or defective from the factory causing pressure buildup.. After replacing the cap she fired right up.. I'll have to look at it closer next chance I get in an effort to remedy the issue.

Update re: gas cap

To remedy the issue, simply pull off the 1" section of tube from the clear ring to the black valve cap (circled in red) and then attach the black cap to the bottom section of tube.
The clear ring piece seems to have let air in but not out.
With that section removed, she is running great and no more stalling out as a result

Added bark busters:

What's the reason for the rev box orange CDI? More rpm? Power?

Its supposed to advance the timing slightly and provide more power at the lower-mid rev range.. it also eliminates the rev limit..
Its a first for me, i got it on recommendation of Plump Kibbles who has the same bike.. im still in break-in mode so keeping under 6k or so for now

One observation i have noticed with this bike is that she is hard to keep running when cold.. it seems i need to raise the idle to around 2k for her to stay running and even when warmed up she doesnt like to go below 1750.. I will have to fiddle with the a/f screw on the carb to try to remedy that.. When the idle is lowered to around 1500 i hear it gasping for air and then eventually stall which i believe indicates being too lean at idle.

That's a sweet bike, especially for the price! Of course, not available in CA. :-(

Update: fixed the hard start and with the need for high idle (2k)..
The stock PZ30 pilot jet at 37 is too small and causing idle to be too lean. The remedy was for me to turn the a/f screw back out another 2 turns.. she now starts right up and can idle at or below 1500 with no issues..

I then decided to update the main to 115 as i was noticing a bog at 3/4 to full throttle..

I also removed the exhaust muffler tip.. gained some throatiness to the sound and between that and the 115 main, she is now running like a raped ape! Very happy :)

Got my VA inspection today and have an appt at DMV on Thursday to title/register. I will provide an update on that afterwards.

A 40 pilot should be the right size.

Update: went to DMV today with MSO, Bill of Sale and form VSA130 in hand.. VSA130 is an offroad conversion to on-road form that Plump Kibbles needed to fill out and have sent to Richmond and then wait 3 weeks for the plate.. Luckily he paved the way for me and future Titan DLX owners here in VA as it was not required and the clerk was able to pull it up in the system with the make/model provided (Koolcnchet/XB88-250)
I was in and out in 15 minutes with new plate in hand.. tax and 2-year registration a cool $130.. great success!

Hey - Deja vu! :tup:

I STILL need to cut'n'gut my stock pipe, but I did pick up the catless pipe on Orion Powersports site. I got the one for the RXB230 - will need an adapter to add about 3in. to attach the muffler. VERY aggressive without the muffler plug, definitely added some ponies too. I don't have a dyno, but I can say it feels like I added at least 5+HP to the mix. The CDI helps I think with starts too - coil and plug wire are way better than stock, hotter, instant power difference felt. The CDI does remove the REV and advances the timing a tad; not sure how much degree but does now feel like something is pulling me when I'm in a lower RPM and give it some throttle. Much better lower end torque curve feels like. I have another CDI that's a 'racing' type, not sure if that is any different. Thinking about that timing key - may have to do that.

I have been pleasantly surprised with my XPro since I got it all figured out. Little power mods here and there - thinking about that bore kit... still want a sixth gear, though lol

If we can get it all coordinated - we need to hit some of the MABDR and get some footage! I have a multi-cam setup on my helmet so I can get front / rear; should be some good shots. But, glad I paved the way for your registration! Wish mine was as easy - MY dmv told me that my bike and paperwork was all fake!! :doh: Got it done though.

I'll get some pics of my project and post 'em up. Btw - if you haven't gotten a skid plate, the Cycra 'full armor' plate for the YZ250 is an exact fit! It is a polymer plate though, not metal - about 60 bucks I think, maybe cheaper now. Has saved me a few times already!!

I'm hearing you on the new CDI. Would you have a link or website to it? Are your comments about horsepower with the stock head pipe and the baffle removed from the muffler? Or with the unresricted head pipe? I'm really learning a lot from your build. Thanks.

This is the CDI we both have on our bikes...
https://www.amazon.com/dp/B07Z8R92YT...roduct_details

Plump Kibbles bought the full kit here (https://www.amazon.com/Hity-Motor-Pe...N%2CB07R7HXYYV)
while i bought the stripped down version previously linked, but same CDI in both

He is running his on a bike with the stock header replaced with a catless pipe that Orion sells that will work on the Titan (same bike overall)

Im running the CDI on an otherwise stock bike and between tuning the carb properly and adding this, i definitely feel an increase in power.. ofcourse any hp number i state would just be subjective without a dyno measurement, but i think its definitely worth the $10..

I also read that the cdi box and 4-degree timing key play very well together and are a "must".. i hope to purchase and install that in the near future as well as have my stock cat removed.. with the current gearing and setup, the bike feels great and accelerates pretty quick, ofcourse, you need to bang the gears fairly quickly as well