900RR exhaust update - Wrist Twisters
 
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post #1 of 28 Old 06-11-2008, 08:31 PM Thread Starter
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900RR exhaust update

Just got back from a ride. It doesn't keep up with my buddy's 07 CBR1000RR as well as it used to

Maybe a PCIII and a custom map will help it out a little bit.

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post #2 of 28 Old 06-11-2008, 09:53 PM
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But it looks better while trying...

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post #3 of 28 Old 06-12-2008, 01:53 AM
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I find it very hard to believe a 919 could ever remotely keep up with an 07 CBR1000.

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post #4 of 28 Old 06-12-2008, 04:18 AM
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remember his bike is special as its seen 170.......

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post #5 of 28 Old 06-12-2008, 09:48 AM
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one 919 could... sortof, until it ate two sparkplugs.

in fact, it's beaten a lowered and piped 'busa with a 160 pound rider at the track.

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post #6 of 28 Old 06-12-2008, 09:51 AM
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It's always more about the nut on the handlebars than it is about the cc's of the motor; the rider makes all the difference!

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post #7 of 28 Old 06-12-2008, 10:22 AM
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Quote:
Originally Posted by oldfordguy View Post
It's always more about the nut on the handlebars than it is about the cc's of the motor; the rider makes all the difference!
Translation: Hondastreetfigh can't ride for sh**.

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post #8 of 28 Old 06-12-2008, 11:52 AM
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big bottle of giggle juice don't hurt either.

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post #9 of 28 Old 06-12-2008, 05:58 PM Thread Starter
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Quote:
Originally Posted by Super Sneaky Steve View Post
Translation: Hondastreetfigh can't ride for sh**.
Hey now! I'll go take a picture of my tires tomorrow when it's light outside.

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post #10 of 28 Old 06-12-2008, 06:26 PM
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I wondered how a single, same diameter, with higher backpressure, would out perform twins. How about adding a 2nd low pipe?

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post #11 of 28 Old 06-13-2008, 08:02 AM
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Quote:
Originally Posted by dream View Post
I wondered how a single, same diameter, with higher backpressure, would out perform twins. How about adding a 2nd low pipe?
I don't know about higher back pressure. My understanding is that switching to aftermarket exhaust usually lowers back pressure. This usually increases high end hp but can hurt low end torque. I realize he went from 2 to 1 but I think it's still all about the design of the cans. The 900rr exhaust had to flow enough gas for the 900rr motorcycle which makes considerably more hp than my 919 ever will.

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post #12 of 28 Old 06-14-2008, 08:11 AM
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I've forgotten, what can are you using?

I have a CBR900 header with a carbon fiber Wyleco can (no baffles). Performance has not suffered a whit, no flat spot in the R's, no black sooty exhaust, etc. I have the stock can from the header but have never tried it. I do run the PC3 but had the header for a few weeks before mounting the PC3.

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post #13 of 28 Old 06-14-2008, 09:14 AM
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I think it all has do with what front and mid what can what pc3 map...........WOW way too many variables to count.

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post #14 of 28 Old 06-14-2008, 09:20 AM
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Is it used? does it have a cat? is one clogged? .....?......?......?

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post #15 of 28 Old 06-14-2008, 12:54 PM Thread Starter
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Brand new Pilot Powers. Just broken in (hit 200 miles on them). Both sides are equally low.

Here's the rear tire.


Front tire, harder to see line so I marked it with my finger.


Someone asked before if the 900RR can setup would mess with the lean angles? I haven't touched it yet

This next week I'm taking it to the twisties to completely rid it of the pussy lines

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post #16 of 28 Old 06-14-2008, 12:56 PM Thread Starter
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Quote:
Originally Posted by support_six View Post
I've forgotten, what can are you using?

I have a CBR900 header with a carbon fiber Wyleco can (no baffles). Performance has not suffered a whit, no flat spot in the R's, no black sooty exhaust, etc. I have the stock can from the header but have never tried it. I do run the PC3 but had the header for a few weeks before mounting the PC3.
It's a Scorpion can. Sounds great. Might get some of that packing out, but I really don't wanna re-rivet it. It's too pretty lol.

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post #17 of 28 Old 06-14-2008, 02:06 PM
 
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you shouldn't need those types of lean angles on the street. =\

go to the track...be safe =]

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post #18 of 28 Old 06-14-2008, 05:00 PM Thread Starter
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Quote:
Originally Posted by martin_nj View Post
you shouldn't need those types of lean angles on the street. =\

go to the track...be safe =]
Wanna sponsor me?

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post #19 of 28 Old 06-14-2008, 07:11 PM
 
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Quote:
Originally Posted by HondaStreetfigh View Post
Wanna sponsor me?
only if you're a winnarrrr!

but i hear ya, tires, pads, fees all add up i've got one t-day under my belt and another setup for aug 4th at NJMP - haven't gotten my knee down yet though


if you're going to push it on the street, pick a corner, check it for debris, run it a few times at 7/10 then up it from there

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post #20 of 28 Old 06-14-2008, 07:51 PM
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peg & muffler:

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post #21 of 28 Old 06-14-2008, 08:58 PM Thread Starter
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Quote:
Originally Posted by gpzTurbo View Post
peg & muffler:
Hell yeah. I wanna be like you. That the Borla headers? Mine is higher than yours.

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post #22 of 28 Old 06-14-2008, 09:00 PM Thread Starter
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Quote:
Originally Posted by martin_nj View Post
only if you're a winnarrrr!

but i hear ya, tires, pads, fees all add up i've got one t-day under my belt and another setup for aug 4th at NJMP - haven't gotten my knee down yet though


if you're going to push it on the street, pick a corner, check it for debris, run it a few times at 7/10 then up it from there
I'm a winner! There's an awesome pair of corners right down the road from my house. Popo's been sitting there recently because of my buddy and me a few times a day. Luckily I saw him in my truck, and immediately texted my buddy. Now we do a run through before we take it hard.

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post #23 of 28 Old 06-15-2008, 04:32 AM
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Quote:
Originally Posted by HondaStreetfigh View Post
Hell yeah. I wanna be like you. That the Borla headers? Mine is higher than yours.
Dont' be like me. It's not supposed to look like that.
Learn to ride it correctly and you'll pull the bike around the turn even quicker without scraping a thing.

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post #24 of 28 Old 06-22-2008, 08:15 PM
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Hi all, looking at swapping out the stock exhaust for the 900rr header and aftermarket can. Will I have to fab up any new brackets to make the swap?
Pics of the underside would help. Thanks.

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post #25 of 28 Old 06-23-2008, 04:48 AM
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No sweat do you have access to a welder?

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post #26 of 28 Old 06-23-2008, 08:19 AM
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Quote:
Originally Posted by oak1971 View Post
Hi all, looking at swapping out the stock exhaust for the 900rr header and aftermarket can. Will I have to fab up any new brackets to make the swap?
Pics of the underside would help. Thanks.

The existing bracket did not sit exactly flat against my centerstand mounting point and eventually cracked. I paid a welder a few bucks to reinforce it & make a new tab now it's extra solid.

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post #27 of 28 Old 06-23-2008, 02:58 PM
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I have a friend who has a little welding shop. Sold my welder after my last move. Opps

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post #28 of 28 Old 06-23-2008, 03:38 PM
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maybe he will help you out I would

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