full delkevic exhaust

[misterprofessionality]

The one I installed definitely needed at the very least a PCV to see the power gains the exhaust is intended to give. The bike may *work* fine without the PCV or retune, but you won't see near the benefits without that. It's also important to mention that if you open up the exhaust, you need to open up the other end too. Open up your air intake . More air, more fuel, faster flow, better go.

for example, when i installed my decat headers and can, i also removed the air snorkel, widened the intake bells, and installed a PCV to adjust the fueling (with a map specifically designed to accomodate the changes i'd made). The results were significant, but you can tell that I could get more out of the bike with the right equipment. a PCV is kind of an "approximate" solution. my fueling is maybe 90% as perfect as it could be for my setup. If i also used the dynojet O2 sensor autotune system, i'd be even better off.

However, if all you want is gnarly noise, no you don't need a tune or a PCV.

Thanks for the info and help, I did plan on installing the tsr funnel in the side of the airbox to give it a little more air to go with the exhaust. bought one on ebay but never got it and finally got a refund.

Thanks for the info and help, I did plan on installing the tsr funnel in the side of the airbox to give it a little more air to go with the exhaust. bought one on ebay but never got it and finally got a refund. The TSR intake funnel is not the same as the TSR airbox funnels. They are commonly confused on this forum.

The intake funnels before the air filter doesn't do much if at all.

What was referenced above was widening the intake funnels that sit on the throttle body( after the air filter) There is nearly a 10mm difference (if I remember correctly) between the funnels and the throttle body. So for some reason they restricted the flow and we think it was to meet emissions standards.

PowerDubs discovered you can just take the stock ones out and bore/hone them out and reinstall instead of spending the 500$ or so on the TSR kit.

I myself did this and just haven't installed the bored out funnels yet.

2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca

This is correct, that's exactly what i did as well.....it was a lot of sanding a polishing and sanding and polishing and sanding and polishing to remove the material and get the plastic all nice and smooth in there.

The one I installed definitely needed at the very least a PCV to see the power gains the exhaust is intended to give. The bike may *work* fine without the PCV or retune, but you won't see near the benefits without that. It's also important to mention that if you open up the exhaust, you need to open up the other end too. Open up your air intake . More air, more fuel, faster flow, better go.

for example, when i installed my decat headers and can, i also removed the air snorkel, widened the intake bells, and installed a PCV to adjust the fueling (with a map specifically designed to accomodate the changes i'd made). The results were significant, but you can tell that I could get more out of the bike with the right equipment. a PCV is kind of an "approximate" solution. my fueling is maybe 90% as perfect as it could be for my setup. If i also used the dynojet O2 sensor autotune system, i'd be even better off.

However, if all you want is gnarly noise, no you don't need a tune or a PCV.

Thanks for the info and help, I did plan on installing the tsr funnel in the side of the airbox to give it a little more air to go with the exhaust. bought one on ebay but never got it and finally got a refund.

Thanks for the info and help, I did plan on installing the tsr funnel in the side of the airbox to give it a little more air to go with the exhaust. bought one on ebay but never got it and finally got a refund. The TSR intake funnel is not the same as the TSR airbox funnels. They are commonly confused on this forum.

The intake funnels before the air filter doesn't do much if at all.

What was referenced above was widening the intake funnels that sit on the throttle body( after the air filter) There is nearly a 10mm difference (if I remember correctly) between the funnels and the throttle body. So for some reason they restricted the flow and we think it was to meet emissions standards.

PowerDubs discovered you can just take the stock ones out and bore/hone them out and reinstall instead of spending the 500$ or so on the TSR kit.

I myself did this and just haven't installed the bored out funnels yet.

2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca

Thanks for the info and help, I did plan on installing the tsr funnel in the side of the airbox to give it a little more air to go with the exhaust. bought one on ebay but never got it and finally got a refund. The TSR intake funnel is not the same as the TSR airbox funnels. They are commonly confused on this forum.

The intake funnels before the air filter doesn't do much if at all.

What was referenced above was widening the intake funnels that sit on the throttle body( after the air filter) There is nearly a 10mm difference (if I remember correctly) between the funnels and the throttle body. So for some reason they restricted the flow and we think it was to meet emissions standards.

PowerDubs discovered you can just take the stock ones out and bore/hone them out and reinstall instead of spending the 500$ or so on the TSR kit.

I myself did this and just haven't installed the bored out funnels yet.

2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca Thanks, yes i realize theres also the tb funnels that can be opened up. And if that airbox funnel doesnt do much than i wont bother with it. Im really just looking for a more knarly sound and really dont want to go through all the time and work of tearing it all apart to open up the tb,s and all that. The bike seems to run just fine and plenty quick and fast for my old butt to begin with. with that being said.
And with just a full open exhaust and no other mods is there anything i should or you would recommend i do?? What should i do with the stock 02 sensor?? I have a delete plug that plugs into the wire harness? And although no big power gain with just an open exhaust and running the pcv would it still be beneficial to run it?? better fueling ? maybe run a little cooler? I also have the auto tune but dont have a laptop to use it yet. Was thinking of having my buddy weld in the bung for it ,so if i decide to run it someday i wont have to pull it back apart. Thanks again for all your help!

keep them if at all possible, especially if you don't plan to modify the fueling and air in any other way. A lot of aftermarket exhausts for our bike still have the O2 Sensor bung in them and all you have to do is plug it back in. This will help your bike compensate for the changes. I'd strongly reccomend you check on this with regards to the headers you plan to buy and make sure you buy a set that has the O2 sensor bung.

as far as deleting it goes, when you install a PCV it comes with a blockoff cap for the connector that leads to the O2 sensor. so you plug in the cap in the connector where the o2 sensor used to wire up and just remove the sensor altogether, letting the PCV do the work. However, if you're planning on just removing it and leaving it disconnected with no other modification, that is probably not something i would go for.