Yes. I've seen their marketing material... And no, I'm not saying that there is no benefit that can be had with them.

What these type of device try to do - in large part - is deal with reversion in part of the power band (usually in the low to mid range). They do so by damping out the reflected waves (reversion). The question is, what if your particular exhaust systems is already well designed and doesn't really have the reversion problems that devices like these seek to address?

You've stated that you have Rush slip-ons. No? Do they have reversion problems that need to be addressed? Don't know which ones you have, but if they are these...

http://hammerperf.com/ttxlexhaust.shtml#rushslipons

... then they would seem to have a pretty decent - reasonably flat/robust -torque curve already. Just home much improvement - assuming any improvement at all - would you expect to get by installing TTI's? Is it worth drilling holes in your pipes? Meh? Maybe, your concern about cracking can be best addressed by skipping this step.

 

Yeah if you have a good pipe/slip-on's already there is not much use for them but in my case, the straight shot slip-on's I have aren't the best performers so TTI's will make a good improvement. The baffles in these slip-on's don't seem to do much.

I know if I had the Rush slip-on's I would not be drilling them to add TTI's that's for sure. I will be buying a set of the Rush slash down slip-on's with the 1.75" baffles pretty soon but for now, the improvement I will get from the TTI'S will hold me over until then.

OP, depending on which Rush slip-on's you have, you may want to reconsider the TTI'S. The slash downs with 1.75" baffles seem to perform very well from the dyno results on Hammer's website. But that is totally up to you. Have at it if you feel they will improve on a great performing slip-on.

 

I’ve been running them in both Longshots and Big Shots Long and have not experienced anything but increased performance and better sound for over 8 years now.
YRMV.

 

If you need them the pipes you fitted are not correct.

 

Define not correct.

I got the pipes I have from another forum member and at a reasonable price. At the time I was short on cash and needed a replacement for my gutted stock slip-on's that cracked with TTI's in them. So with that being said, they were the "correct" pipes at the time. Haha. I will be getting better pipes but for now, TTI's will do the trick as long as they don't crack the pipes again. Even if they do they will hold me over until my Rush slip-on's arrive in the near future.

Also I think the OP went with a good brand of pipe at least. I don't think he will "need" TTI's but I don't know.

 

I am defining correct as in matching your riding style.

As I am sure you know if the headers are not tuned then the pipes need to be.

Tuning can be broad or it can be at a specific rpm.

Fitting pipes that give a very narrow tuned band is good if that is your riding style but fitting them just to make noise I suspect is not so good.

I will have to guess that folk don't know this when they buy their pipes only that they look good.

I don't have the answer, only a dyno can show how the pipes are working.

 

Understood and you are most likely 100% correct on people buying pipes with no research on performance. I think many people are just after the sound/looks then realize their bike runs like crap with their choice of pipes. I've noticed my pipes seem perform well in higher RPM but lower and mid range aren't great. TTI's offer the performance gains in that area so they are a good and simple mod for my pipes... as long as they don't crack!

 

I have a set of Rush 1.75 mufflers in my shop I'm not using. They may have a couple of thousand miles on them. They are the side slash.

 

I may have to take you up on those although I don't care much for the baloney cut. I'll send you a PM. Your bike is a 2014 right?

 

Yes it is. I will go out there and check them out. I used heat shields on them. I don't think it scratched the chrome but I will check. I will let them go cheap if you need them. Ive got Supertrapp Supermegs on it right now which I really like.