I purchased this in preparation for stage 3 is the main reason I bought this. But it's definitely louder as well, with more even space between the sound of each combustion from the exhaust. Also more raspy. Installation was complete in one afternoon, it took me 6-7 hours total, which does include going out to the store and back for two new O2 sensors, I did not feel like fighting the original sensors. The O2 extension harness length is slightly overkill, but it is needed to connect the downstream sensor. You will end up putting the upstream sensor in the headers' O2 **** (at least on the redline), the sensor **** right before the cat on the downpipe will not be used, and the kit comes with a plug that you can use for that. Someone had mentioned you need to remove the valve cover to install the long tube header from the top - that is simply not the case (again at least for the redline, they may have been talking about the cobalt ss). It is a very tight squeeze, but once you remove the valve breather hose from the back of the head, the header can just barely squeeze through, making this job 10x easier. The header eventually gets blue tinged here and there, usually where the tubing bends, and the whole thing will change from silver to light gold in color but it looks good nevertheless.
Great product, never have installed a header before and took me a few hours. You WILL have to remove your valve cover to fit the Longtube in, I didn’t realize this until trying to install because that isn’t stated anywhere…the mid length you DONT have to remove the valve cover, but you’re sure to make more power with the Longtube so it’s worth the extra 15 min of work, plus you can go ahead and paint you valve cover and do a tune up in the process. There are two bolts/studs on the driver size that’s a little tricky to get to so he patient, if you’re able to remove your heater core hose that goes into the fire wall you’ll benefit greatly, mine would not come off but I still got it done. Other than that it fits good, sounds good, and without a tune I can feel more power mid range - top end. ZZP got it shipped fast, welds look great and so I’m glad I went went ZZP.
Very nice and clean install! Definitely recommend!
Great item been nice if didn't have to buy converter
Long tube header
Great product very easy to install. Love the quality of the header and down pipe.