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Air box mod done
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Tev62 Offline
Road Warrior

Ireland
Posts: 1,583
Joined: Nov 2020
Post: #11
RE: Air box mod done
(11-14-2017 06:19 PM)4 Paws Wrote:  Gotta ask, does it do any good?
Not trying to start an oil thread, an honest question from a fellow rider considering an inexpensive mod.

They claim extra horsepower on the ad. E-mail them and ask them to prove this, like how much and where in the rev range? Don't hold your breath waiting for an answer!
10-09-2021 02:40 AM
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Sparky80 Offline
1st Service Completed

Abilene, TX
Posts: 140
Joined: Oct 2021
Post: #12
RE: Air box mod done
i ripped the wire mesh that goes around the stock filter off. Seems that is quite intrusive for airflow.
My head thinks it made a difference and it revs up/down faster but I'm not sure. Was free though

No longer own a Honda CB1100.... great bikes but too bland for me.

2016 Yamaha FJR1300AK
2013 Yamaha Zuma 125
10-09-2021 05:06 AM
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teamvisegrip Offline
1st Service Completed

Superior, WI
Posts: 144
Joined: Jan 2018
Post: #13
RE: Air box mod done
I will chime in on this one. Since I have done all of this and added the TSR Intake Funnels at the Throttle Bodies. All of it plus the refresh of the CPU gave me noticeable power increase and better ride. With just the pipe nothing really noticeable.

I have posted this before but will post again for the new guys.

From this experience I gained doing these modifications I determined the largest restriction was at the Throttle Bodies. You can see the difference if you follow the link. I am computer stupid and do not know how to reduce the pictures to post here. The silver intakes are the TSR parts and the black ones the original.

I have finally found a place that will put the bike on a dyno and hope to do this next summer.

https://app.photobucket.com/u/teamvisegr...02638c3597

1967 Suzuki T-20 Street Mod
1970 Honda CL100
1971 CZ 175 Trail
1974 Kawasaki H2 Denco KC120 Tracy Body
1985 Honda XL600R
1986 Honda VFR 750
2014 Honda CB1100
10-09-2021 05:50 AM
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PowerDubs Offline
Road Warrior

NWNJ
Posts: 2,858
Joined: Jul 2016
Post: #14
Air box mod done
(10-09-2021 05:06 AM)Sparky80 Wrote:  i ripped the wire mesh that goes around the stock filter off. Seems that is quite intrusive for airflow.
My head thinks it made a difference and it revs up/down faster but I'm not sure. Was free though


It is not. The stock filter flows waaay more cfm than our engine needs.


Sent from my iPhone using Tapatalk

(10-09-2021 05:50 AM)teamvisegrip Wrote:  I will chime in on this one. Since I have done all of this and added the TSR Intake Funnels at the Throttle Bodies. All of it plus the refresh of the CPU gave me noticeable power increase and better ride. With just the pipe nothing really noticeable.

I have posted this before but will post again for the new guys.

From this experience I gained doing these modifications I determined the largest restriction was at the Throttle Bodies. You can see the difference if you follow the link. I am computer stupid and do not know how to reduce the pictures to post here. The silver intakes are the TSR parts and the black ones the original.

I have finally found a place that will put the bike on a dyno and hope to do this next summer.

https://app.photobucket.com/u/teamvisegr...02638c3597


The velocity stacks are indeed a large restriction- the TSR are currently the largest / least restrictive so in theory should make the most power.

They are pricey. And might not be made anymore?

The stock velocity stacks can be bored out with good results - just time and grinding materials. They flow at least enough air- bored out- that I made 103whp + 75wtq. Not sure how the TSR would have changed that.

I am now awaiting a custom set of dual height velocity stacks that should do better than both. I will dyno.


Sent from my iPhone using Tapatalk

104whp / 75wtq ... for now.
(This post was last modified: 10-09-2021 05:39 PM by PowerDubs.)
10-09-2021 05:08 PM
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teamvisegrip Offline
1st Service Completed

Superior, WI
Posts: 144
Joined: Jan 2018
Post: #15
RE: Air box mod done
Hey PowerDubs... I figured you would chime in. LOL!

Yes the TSR Funnels for the Throttle Bodies are not in production. At least they were not when I bought mine and I had to search hard to ge them. For me the price was right as they were a proven set-up. Plus it was a lot easier than making/refitting the originals. They look great and fit amazingly well.

Next year I will get it o the dyno at some point. It will be interesting what it is running and see if it can be improved on as far as programing.

Hang in there and post up the new funnels when you get them.

1967 Suzuki T-20 Street Mod
1970 Honda CL100
1971 CZ 175 Trail
1974 Kawasaki H2 Denco KC120 Tracy Body
1985 Honda XL600R
1986 Honda VFR 750
2014 Honda CB1100
10-09-2021 07:36 PM
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SportsterDoc Offline
High Mileage

New Mexico
Posts: 1,447
Joined: Nov 2017
Post: #16
RE: Air box mod done
(10-09-2021 05:08 PM)PowerDubs Wrote:  ..
The stock filter flows waaay more cfm than our engine needs...

Yep

http://cb1100forum.com/forum/showthread....hlight=CFM

CFM calculations on page 2 of this thread.

23 Guzzi V7 SE 23 Yam XT250
18 Yam Bolt 22 Triumph St Twin 20 CanAm Ryker
14 Honda CB1100 18 Yam XT250 16 Guzzi V7II
17 Yam TW200 12 Triumph Bonnie 02 Sportster 1200S
03 Sportster 883 76 Honda CB750F 75 Honda CB360
70 Yam CT1 72 Yam CT2 72 Yam AT2
70 Honda SL350 70 Honda CL350 67 Honda CL160
67 Honda CB16062 Honda CA110
(This post was last modified: 10-09-2021 09:20 PM by SportsterDoc.)
10-09-2021 09:18 PM
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outback Offline
Break-In Period

Brookilne NH
Posts: 48
Joined: Aug 2021
Post: #17
RE: Air box mod done
(10-09-2021 09:18 PM)SportsterDoc Wrote:  
(10-09-2021 05:08 PM)PowerDubs Wrote:  ..
The stock filter flows waaay more cfm than our engine needs...

Yep

http://cb1100forum.com/forum/showthread....hlight=CFM

CFM calculations on page 2 of this thread.

I just got an email from the guy who makes the tsr funnels for the throttle bodies. He quoted me 560.00 usd for a set.

(10-09-2021 07:36 PM)teamvisegrip Wrote:  Hey PowerDubs... I figured you would chime in. LOL!

Yes the TSR Funnels for the Throttle Bodies are not in production. At least they were not when I bought mine and I had to search hard to ge them. For me the price was right as they were a proven set-up. Plus it was a lot easier than making/refitting the originals. They look great and fit amazingly well.

Next year I will get it o the dyno at some point. It will be interesting what it is running and see if it can be improved on as far as programing.

Hang in there and post up the new funnels when you get them.

I just got an email from the guy who makes the tsr funnels for the throttle bodies. He quoted me 560.00 usd for a set.
(This post was last modified: 10-10-2021 05:23 AM by outback.)
10-10-2021 05:21 AM
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PowerDubs Offline
Road Warrior

NWNJ
Posts: 2,858
Joined: Jul 2016
Post: #18
RE: Air box mod done
Yea- that is absurd. Just wait a little longer- and we will know what the results of these are-

http://cb1100forum.com/forum/showthread.php?tid=17343

and the price will be nowhere near the TSR..

104whp / 75wtq ... for now.
10-10-2021 10:13 AM
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E11even_Hunnit Offline
Running Like a Top

California
Posts: 386
Joined: Dec 2019
Post: #19
RE: Air box mod done
(10-10-2021 10:13 AM)PowerDubs Wrote:  Yea- that is absurd. Just wait a little longer- and we will know what the results of these are-

http://cb1100forum.com/forum/showthread.php?tid=17343

and the price will be nowhere near the TSR..

Patiently waiting. Certainly hope your prototype isn't stuck on a container ship somewhere Thumbs Up

"If you ain't first, you're last" - Ricky Bobby

'14 STD - Under construction
10-10-2021 03:49 PM
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teamvisegrip Offline
1st Service Completed

Superior, WI
Posts: 144
Joined: Jan 2018
Post: #20
RE: Air box mod done
Had to look back to see if I could find the bill for them. I know I had to do a lot of searching for the set I got. Was told back then they stopped making them. Maybe they started to make them again. I think I paid less than that for mine. I am guessing @ $520 was my costs back then. Reason I could justify it was simple. My bike had less than 100 miles on it when I did this modification. I wanted to go with a tested and proven design. I did not want to install or guess as to what would work at the time. So for me I could justify the costs back then.

Would I do it again knowing what I know now? For me the answer is still Heck Yes! It works and it did the job for me.

I was very disappointed with the performance of this bike compared to my 86 VFR 750. For an 1100 I felt it was lacking. It needed something. It was screaming to be let loose you could say! Do not get me wrong. In stock form the CB1100 is a wonderful bike and does it all well. I just wanted more. A common problem for me. I have modified a few bikes in my life. Most were my experiments. Some went very bad and blew up! I just did not want this to happen the the CB1100. Thus for me the cost was justified and I am very impressed with the outcome.

My two cents on the cost.

1967 Suzuki T-20 Street Mod
1970 Honda CL100
1971 CZ 175 Trail
1974 Kawasaki H2 Denco KC120 Tracy Body
1985 Honda XL600R
1986 Honda VFR 750
2014 Honda CB1100
(This post was last modified: 10-10-2021 08:05 PM by The ferret.)
10-10-2021 07:22 PM
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