my t maxx 3.3 has the resonator pipe. i noticed the nitro 4-tec with the 3.3 has a blue resonator pipe. heres what traxxas says about the pipe i got-

the Resonator dual-chamber Maxx pipeprovides an average peak torque increase of 16% over the standard Maxx pipe, and a 10% increase in total power across the whole range. Full mirror polish adds that final touch.

and the Resonator™ Blue-Anodized Aluminum Tuned Pipe
The Traxxas Resonator aluminum tuned pipe is precision-engineered to maximize power output from the TRX 3.3 Racing Engine. The silicone stinger cover provides extra safety. Improved top-end power, enhanced bottom-end punch and smooth, linear power are the combined result of the laser-etched Resonator tuned pipe and the extreme horsepower of the TRX 3.3 Racing Engine.

i dont want it just because its blue,lol. if its equal to mine then i wouldnt get it. but if its better than the one i got, maybe i would upgrade it.

Don't buy any of it. In fact, get rid of what you got and buy a THS header and pipe combo. (they are polished aluminum so it won't match your blue theme) For the money, the power it gets out of that 3.3 is impressive to say the least.

yeaaa, i heard of them ths headers and pipes! they are real good. people say. i dont care about the blue, aslong as it performs better.
http://www3.towerhobbies.com/cgi-bin...&I=LXUAB4&P=FR

i also found this one on ths website- http://www.thsracing.com/

it has a polished pipe also for $45.00.

ths site