The CB1100 Community Forum

I was hoping to get to the Dino this afternoon but I am on the highway and completely stopped bumper-to-bumper traffic for an hour now because of some accident. Probably not going to happen which sucks because the weather is perfect for it.


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Rode the bike today for the first time since putting these in.

Didn't ride far, or any attempt whatsoever to focus on various RPM / throttle position...but once home the trim file did add some fuel in spots which is a good sign.

Stopped by the shop- showed him a pic of the stacks. He said call back at the end of this upcoming week.

Cool.

So I came home and took the Aprilia out for the first time since riding home from buying it!

No joke- the day I bought it was great weather- then it rained non stop for the next 7-8 days straight!! My friend texted me and said- "It's rained every day since you bought that bike- bring it back!!"

Still like to get a set of those

Might be headed to the local dyno tomorrow after work to finally test these.

Haven't rode it other than just a couple minutes that one day last week or so- so haven't adjusted any fuel maps... but will keep an eye on the A/F as we do a run...

My guess is that I was already rich enough that even if these runs might not be ideal - they will be safe- so I am not concerned.

(10-11-2022, 11:23 PM)1973cb750_imp Wrote: [ -> ]Still like to get a set of those

Nope. I can save you much time and aggravation.

Unless you like just a smidge more than what my ‘free’ homemade bored out factory Honda velocity stacks made.

104whp has been achieved.

Was it worth all the time and effort? No.








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But did you enjoy yourself doing it, PowerDubs?

Yea- I never mind working on the bike- especially trying new things.

I haven't done the math on expected power production VS valve size- but I've played with more than enough engines modifying now to know that is the current limiting factor now.

I've opened up everything on the intake & exhaust- and we know that 1140cc is capable of more... so now it would be headwork. Which I won't be doing anytime soon- if ever on this bike.

SOOO- now I can move on to putting in the 4-4 exhaust. I've held off because I expect it to loose power vs the 4-1 but that's fine because it will look and sound cooler.

I ride around most of the time at 2k rpm anyway.

(10-20-2022, 10:53 AM)PowerDubs_imp Wrote: [ -> ]Yea- I never mind working on the bike- especially trying new things.

I haven't done the math on expected power production VS valve size- but I've played with more than enough engines modifying now to know that is the current limiting factor now.

I've opened up everything on the intake & exhaust- and we know that 1140cc is capable of more... so now it would be headwork. Which I won't be doing anytime soon- if ever on this bike.

SOOO- now I can move on to putting in the 4-4 exhaust. I've held off because I expect it to loose power vs the 4-1 but that's fine because it will look and sound cooler.

I ride around most of the time at 2k rpm anyway.

After all that ...

I'm looking forward to your installing the 4 into 4 too. It will certainly look and sound cool.

(10-20-2022, 11:18 AM)Cormanus_imp Wrote: [ -> ]

(10-20-2022, 10:53 AM)PowerDubs_imp Wrote: [ -> ]Yea- I never mind working on the bike- especially trying new things.

I haven't done the math on expected power production VS valve size- but I've played with more than enough engines modifying now to know that is the current limiting factor now.

I've opened up everything on the intake & exhaust- and we know that 1140cc is capable of more... so now it would be headwork. Which I won't be doing anytime soon- if ever on this bike.

SOOO- now I can move on to putting in the 4-4 exhaust. I've held off because I expect it to loose power vs the 4-1 but that's fine because it will look and sound cooler.

I ride around most of the time at 2k rpm anyway.

After all that ...

I'm looking forward to your installing the 4 into 4 too. It will certainly look and sound cool.

Well....IF I ever *need* to get somewhere fast.. I can.

That's the beauty of this bike- it can do anything. UJM.

Bike shop guy loves it... he can't stop talking about it every time I am there. Can't believe what it does. I told him I can cruise around all day under 2k no prob and if I want to go- just twist the throttle- no bog, no hesitation.

He is used to tuning all the sport bikes that need 8-9-10k just to get going.