|  | Topic : convert to by pass pipes? |  |
| | | weasel | | Set |  | | Reg. Date | : | 14/02/2012 | | Posts | : | 150 | | Location | : | Thornbury,Bristol, South Gloucestershire, United Kingdom |
|
| | Posted : 04 Aug 2012 - 09:49 Post title : convert to by pass pipes? | | | If I remove the cat and replace with bypass pipes , will this have any affect on performance ?
|
ride till your tyres fall off
|
|
| | | mjgt | | Thor | |  | | Reg. Date | : | 16/09/2011 | | Posts | : | 2,201 | | Location | : | North Somerset, United Kingdom |
|
| | Posted : 04 Aug 2012 - 13:39 Post title : Re: convert to by pass pipes? (Re: weasel) | | | As long as you change the map as well, it should improve things but i'm not sure by how much.
| Mick . . .  Keep the rubber side down!!
|
|
| | | DizzE | | Thor | |  | | Reg. Date | : | 12/07/2010 | | Posts | : | 3,141 | | Location | : | Sunnyvale, CA, United States |
|
| | Posted : 04 Aug 2012 - 14:27 Post title : Re: convert to by pass pipes? (Re: mjgt) | | | There are Catless tunes for 1700, and for 1600 with 1700 cam, and I think silverfish or someone combined some maps,
so there is an un-dyno version of Catless for 1600 here on this site.
You just need to learn ALL about TuneECU. Link With that software and cable, drivers, etc, you can try
other maps, if you follow the instructions. Big learning curve but we will help, if you do the homework.
| | Post edited by DizzE on 04 Aug 2012 - 14:28 |
|
| | | mjgt | | Thor | | | | Reg. Date | : | 16/09/2011 | | Posts | : | 2,201 | | Location | : | North Somerset, United Kingdom |
|
| | Posted : 04 Aug 2012 - 14:31 Post title : Re: convert to by pass pipes? (Re: DizzE) | | | Pete, I have a cable.
| Mick . . . Keep the rubber side down!!
|
|
| | | DizzE | | Thor | | | | Reg. Date | : | 12/07/2010 | | Posts | : | 3,141 | | Location | : | Sunnyvale, CA, United States |
|
| | Posted : 04 Aug 2012 - 14:36 Post title : Re: convert to by pass pipes? (Re: mjgt) | | | mjgt wrote:
As long as you change the map as well, it should improve this but i'm not sure by how much. |
|
This bike already has very snappy performance. That performance, OTH, necessarily decreases with rider and
gear weight.
So, if 1600 is a superior bike for you, it can be made better in the power range at around 2500 rpm. Significantly more
foot pounds of torque can be applied to the road safely, without the Cat. It will take much more fuel in that sweet spot, and it will
be less loud with the tune.
To take off the CAT and run the standard TOR tune will reduce that low torque to below stock.
The Custom tunes bring it back, well above stock. It won't go any faster, in total. It just goes faster, much fasterly. 
| | Post edited by DizzE on 04 Aug 2012 - 14:39 |
|
| | | Rodge | | Set | |  | | Reg. Date | : | 07/08/2012 | | Posts | : | 85 | | Location | : | Devon, United Kingdom |
|
| | Posted : 10 Aug 2012 - 11:11 Post title : Re: convert to by pass pipes? | | | Hi Guys,
DizzE's post above gives a good answer to Weasel's query on torque & performance, so from that perspective it looks worth doing if performance is what your seeking - assuming you can find the optimum tune so you don't rot up what you've got.
Not trying to hijack Weasel's original thread here, but what I still don't know is what the thing will sound like with the cat removed and stock pipes fitted. For me, I'd like the bike to sound a little less gagged, less like a sewing machine, and more like what it is without being as loud as, say, the bypass and short TORS - which are nice, but are too loud for my Missus!
I've read dozens of posts on this subject, but they always seem (naturally enough) to branch off towards what others have achieved with this and that model of TORS, after market pipes, etc. They would, wouldn't they, if better and better performance is the goal. Before this one does that too  can I just ask this:
Is anyone actually running (or has run) a cat bypass with the stock silencers? If so, what are your observations on sound and performance and what tunes have you tried to what effect?
| Rodge
|
|
| | | Rshosted | | Set | | | Reg. Date | : | 31/07/2012 | | Posts | : | 8 | | Location | : | United States |
|
| | Posted : 10 Aug 2012 - 22:03 Post title : Re: convert to by pass pipes? (Re: Rodge) | | | It is my intention to replace the cat with 45's and leave the stock silencer. I am looking here to find what tune a Storm should have when one does this. I will report back what I hear when I do this. But if anyone knows a tune #, I'd really appreciate them shooting me in that direction for my '12 tbird storm.
|
|
| | | mjgt | | Thor | | | | Reg. Date | : | 16/09/2011 | | Posts | : | 2,201 | | Location | : | North Somerset, United Kingdom |
|
| | Posted : 11 Aug 2012 - 17:43 Post title : Re: convert to by pass pipes? (Re: Rshosted) | | | Welcome to the forum Rshosted, There is a thread on this forum about the tune you are asking for, have a look in the performance section, it might be there.
| Mick . . . Keep the rubber side down!!
|
|
| | | weasel | | Set | | | Reg. Date | : | 14/02/2012 | | Posts | : | 150 | | Location | : | Thornbury,Bristol, South Gloucestershire, United Kingdom |
|
| | Posted : 12 Aug 2012 - 20:20 Post title : Re: convert to by pass pipes? (Re: mjgt) | | | Changed the cat for bypass pipes today , then took the bird for a little spin sounded better by far
|
ride till your tyres fall off
|
|
|
| |
| |
|