What are the advantages of a cat delete?

[BionicChewbacca]

Oh no…increases my carbon footprint and it’s not a green move….someone’s not going to be very happy with any of my vehicles.

 

[MikeyTX]

Less heat. Less smell. Less weight. Some ability to tailor sound level.

Are y'all speaking of the models below the RT LTD ? I have absolutely no heat nor smell issues. As for weight ? Unless one is drag racing, I see no issue. Sound ? The mother ship has gone to great lengths so as not to antagonize the general public. Why would one want to be equated with a small minority whose sole objective is to antagonise those around them.

 

[MikeyTX]

all of the above, and a wee bit more HP, cause the gasses flow faster.

You've hard copy dyno sheets to back up the more HP statement ? Exactly how much gain do you expect from a small engine ? As an example, one only need look at the dyno graphs K&N is so proud of. The HP gain is at WOT. Not mid range nor, the low end where one would want it. Conversely, the torque numbers are abysmal in low and mid range. Not exactly what one wishes for coming off the line or worse, trying to gain speed passing on a two lane road. YMMV

 

[MikeyTX]

Yes and no...The computer does not measure actual power output, so if power can be gained, it will reach the rear wheel. The computer is watching many parameters. Regarding the exhaust, it is a single point O2 sensor which monitors FA ratio. There is no secondary downstream O2 sensor after the convertor. Lacking the second sensor, the computer does not have input data to monitor how well the convertor is reducing emissions from input to output. Therefore, the computer adjusts fuel ratio based of the one probe it monitors, and with this controls the mixture to the intake ports.

Regarding making more power, if the exhaust is more free flowing, AND the computer can retain the preset FA ratio range without faulting, more fuel in will increase power. Unlikely a lot, and doubtful any serius increase at high rpm. It is now common knowledge that the engineers de-rated the power output by limiting throttle opening. Therefore the trick per say, if not getting the computer remapped, is to make stronger power throughout the rpm range. So, having an increase in mid range power, while retaining proper FA ratios, via a free flowing exhaust and air intake is viable. No dyno runs, but our 14 RTS has a stronger pull through the mid range and up to speed. Is it crazy fast, no, but better.

I have always run 93 octane fuel also. The computer will adjust over time to your riding style and often times fuel used. I would need to verify if the Spyder 1330 monitors knock, and if so adjusts timing. Very possibly it does, and if so, will increase timing as needed, which can also greatly improve power, especially mid range.

Is this not a fuel injected engine ? As such, flow is regulated. Even when carbureted, there was the need to change the jets. I can remember having to change jets riding to Sturgis from TX as the altitude changed. Ugh!

 

[MikeyTX]

what are the advantages to a cat delete pipe on a spyder rt?

2021 or older ?

 

[PMK]

Is this not a fuel injected engine ? As such, flow is regulated. Even when carbureted, there was the need to change the jets. I can remember having to change jets riding to Sturgis from TX as the altitude changed. Ugh!

Not exactly sure of your point to the post.

Fuel injection systems that utilize FA ratio sensors simply make it less work then changing jets in a carb. The engine management computer will do this constantly, and unless preset parameters are exceeded, the computer will alter as needed. If parameters are exceed, a fault will display.

 

[MikeyTX]

Not exactly sure of your point to the post.

Fuel injection systems that utilize FA ratio sensors simply make it less work then changing jets in a carb. The engine management computer will do this constantly, and unless preset parameters are exceeded, the computer will alter as needed. If parameters are exceed, a fault will display.

My point is that cost vs gain is negligible IMHO. Aside from breaking federal pollution laws.

 

[ButterSmooth]

Are y'all speaking of the models below the RT LTD ? I have absolutely no heat nor smell issues. As for weight ? Unless one is drag racing, I see no issue. Sound ? The mother ship has gone to great lengths so as not to antagonize the general public. Why would one want to be equated with a small minority whose sole objective is to antagonise those around them.

Mine is a 2020 RT and it always had a foul burning rubber smell at the end of a ride. And the heat on 90° and warmer days was captured in the cockpit area when riding or stopped. Didn't say the weight was an issue, just that it was reduced. Mine is as quiet as stock, but you can make more noise with a cat delete if YOU want. I just tried to succinctly list all the things that could be viewed as advantages to a cat delete.

 

[MikeyTX]

Now you have a fantastic excuse to buy a 2021. No smell and, it will help the economy .............. :clap: Just think of all the money you can spend at Lamonsters. hyea:

 

[Hoginedgewood]

A ratchet strap around the rear tire and hooked to the spring tool makes it much easier. Thank Shadow71 for the tip.

I'd love to see that!

 

[PMK]

My point is that cost vs gain is negligible IMHO. Aside from breaking federal pollution laws.

Actually, the gain was well worth the money spent. The primary goal was reduction in heat. The bypass pipe easily accomplished that. Without reducing heat, the Spyder would have been sold as it was simply miserable to be on in stopped traffic during the summer months.

Beyond that, the gain in having a more freely revving engine and better mid range pull was nice.

BTW, if Can Am was serious about emissions, there would be two O2 sensors. One upstream and one downstream. The system they utilize is primarily for engine tuning, not monitoring emissions. Therefore, without two O2 sensors, any emissions created, even when using an oem setup is not verifying that emission levels are within a limit regulated by the engine computer AND will throw a warning code that there is an emissions failure.

I have no issue with you retaining and riding a stock Spyder if you prefer. And not everyone installs aftermarket parts to make these somewhat underpowered vehicles faster.

We should not stop at the bypass pipe either. I would venture to suspect that those getting the computer remapped have truly increased emission levels.