• There were many reasons for the change of the site software, the biggest was security. The age of the old software also meant no server updates for certain programs. There are many benefits to the new software, one of the biggest is the mobile functionality. Ill fix up some stuff in the coming days, we'll also try to get some of the old addons back or the data imported back into the site like the garage. To create a thread or to reply with a post is basically the same as it was in the prior software. The default style of the site is light colored, but i temporarily added a darker colored style, to change you can find a link at the bottom of the site.

Catalytic Converter Bypass

FYI, I installed this today. The pipe is a bit more complex than than I expected as it needed to match up exactly to the cat lead and downpipes as well as hangers, contours and flares. Overall, a good job by Spyder1 as it has to fit exactly and did. The install instructions are fairly simplistic and are available on their website. I had some issues on my install which slowed me down some. One of the muffler bolts stripped and I had to cut the bolt and replace. I did not notice that the kit with the reduced price is solely the exhaust component and didn't include the gasket seals. I was able to reuse mine but spent quite a bit of time gingerly removing them so they could be re-used. If you're thinking about this--get the new gaskets, it's not worth the hassle. In place of the rod type hangers on the cat there are threaded rods welded on. The rods are too fat and rubber grommets and hanger need to be drilled out quite a bit for them to fit. Overall, a good thing and works as advertised. I did take decibel readings before and after. Idle was 75db before and 79 after, 4000 rpm produced 87db before and 89 after. Overall sound is similar. Not sure of gas mileage yet (I do have a K&N on there). I also took readings on right side for temps and there was no change before and after install.
 
flybuddy said:
FYI, I installed this today. The pipe is a bit more complex than than I expected as it needed to match up exactly to the cat lead and downpipes as well as hangers, contours and flares. Overall, a good job by Spyder1 as it has to fit exactly and did. The install instructions are fairly simplistic and are available on their website. I had some issues on my install which slowed me down some. One of the muffler bolts stripped and I had to cut the bolt and replace. I did not notice that the kit with the reduced price is solely the exhaust component and didn't include the gasket seals. I was able to reuse mine but spent quite a bit of time gingerly removing them so they could be re-used. If you're thinking about this--get the new gaskets, it's not worth the hassle. In place of the rod type hangers on the cat there are threaded rods welded on. The rods are too fat and rubber grommets and hanger need to be drilled out quite a bit for them to fit. Overall, a good thing and works as advertised. I did take decibel readings before and after. Idle was 75db before and 79 after, 4000 rpm produced 87db before and 89 after. Overall sound is similar. Not sure of gas mileage yet (I do have a K&N on there). I also took readings on right side for temps and there was no change before and after install.
Click to expand...

I received mine today and started the install but didn't complete it because of the presidential debate. I ordered the gaskets with mine. I was surprised there were no instructions in the box and never thought of looking on their website. I just winged it. Mine does not have threaded rods for hangers and they fit the rubber hanger gaskets perfectly. Everything lines up perfectly. I made audio recordings before removing the cat converter and will make more after the install is completed and post them. I hope to finish the install tomorrow night but it will be late as I have a very long day at the office and won't get home before 8 PM.
 
flybuddy said:
I did take decibel readings before and after. Idle was 75db before and 79 after, 4000 rpm produced 87db before and 89 after. Overall sound is similar. Not sure of gas mileage yet (I do have a K&N on there). I also took readings on right side for temps and there was no change before and after install.
Click to expand...

Are you running the stock muffler.
 
flybuddy said:
flybuddy

quote_icon.png
Originally Posted by Schnauzer
Are you running the stock muffler.



Yes​
Click to expand...

Me too.
 
Finished installing the bypass tonight. Had one heck of a time getting the rear hanger rubber bushing back on, but a little lifting on the back of the new y-pipe with a floor jack pushed it up hight enough to slip it on. I don't have any thing to measure audio level with but is is slightly louder and produces a deeper tone out of the muffler. Movie files (with audio) are very large and will not upload. I'll have to work on them.

Here is what the new bypass looks like:

attachment.php
 
Wow, simple just alot of off=on getting the bends just right. Now I see potential for duals on the RT.."ole-skool :doorag:fishtails.
 
Well, my bipass still hasn't arrived… waited for weeks to get the gaskets!!!

When it finally gets here, I will couple my new Yosh R77 to it. Can't wait!!!
 
I put 700 miles on the catless RT in the past 5 days (went to Daytona)..I'm not really seeing any change in fuel mileage and, oddly, it seems to want premium gas only now. When I use mid grade, the rpm will surge when I get above 60, does not happen if I use premium..Tested it twice, both ways. Since I've got a K&N up front and more free flow at the back end, I'm assuming that the ECM is thinking it's lean thereby increasing mixture and advancing timing. Anyone have any other thoughts as to why it's doing this? Anyone else who did this mod having same issue?
 
flybuddy said:
I put 700 miles on the catless RT in the past 5 days (went to Daytona)..I'm not really seeing any change in fuel mileage and, oddly, it seems to want premium gas only now. When I use mid grade, the rpm will surge when I get above 60, does not happen if I use premium..Tested it twice, both ways. Since I've got a K&N up front and more free flow at the back end, I'm assuming that the ECM is thinking it's lean thereby increasing mixture and advancing timing. Anyone have any other thoughts as to why it's doing this? Anyone else who did this mod having same issue?
Click to expand...

I've put about 250 miles on mine since installing. The stock muffler is definately louder and deeper in tone. I do not have any real hard data yet as to improvements in mileage. This past weekends ride on the Skyline Drive was almost all done in 3rd and 4th gear at low RPMs so even though it calculated to over 30 mpg, I need to get more "at speed" miles on it to figure out the real number. I've always used premimum gas, so I won't see any issues there.

It will be a while til I get around to changing out the airbox so any changes/improvemnets caused by that are still unknown.

 
Finished converter bypass this weekend. Installed yosh77. Rode about 25 miles after install, RT computer adjusted OK. Runs great with a lot less heat. Some pretty loud popping at first when shifting, that settled down as the fuel tables adjusted.
 
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