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I traded in the Sonic. I didn't expect to, but the dealership (NOT Chevy) "made me an offer I can't refuse". I love my new car dearly. I'm not here to promote other brands, so I'm not interested in discussing what kind of car I got. I simply want to express my disappointment. Until it...

Sold!

So my Sonic's rotors seem to be warped at 10,000 miles. There is a noticeable shudder whenever I brake. It becomes quite pronounced and vibrates the steering wheel when braking downhill at higher speeds. It's becoming quite annoying. I've heard that GM is notorious for using crappy/thin...

Last night I was driving home from work unusually late and had the roads to myself. I took the opportunity to turn off the eco tune and open the car up. This is probably the first time I've done so since I uploaded the new tune that fixed my popcorn start. I quickly noticed that under...

I've got a question for all of you who are running catless exhausts on your Sonics....how much exhaust are you smelling? I recently had the ZZP catless downpipe installed on my car along with a straightpipe (2nd cat/resonator removed) back to my factory muffler and tailpipe. The car is loud as...

Forgive me if this has already been answered (I searched around)...but has anybody added a ZZP catless downpipe to an otherwise factory exhaust system? From what I understand it should bolt right in, and that is where the majority of the (exhaust) power gains come from. I know I'll have to...

When I get a new exhaust on my 1.4T I'm planning with a full turbo back exhaust from ZZP with no primary cat. I am going to go with the high flow secondary cat. What I'm wondering...do any of you know how effectively the secondary cat filters out carbon monoxide? I imagine it won't do it as...

I'm currently planning my exhaust. I intend to remove the 2nd cat and put a full catback system on, but I'm still stuck having to run the 1st cat. Does anybody know if there is a high-flow replacement available for the 1st cat? It seems like upgrading the entire exhaust after the 1st cat won't...

Anybody else out there looking forward to seeing what 22psi of boost feels like on a 20 degree day? I've noticed HUGE differences in power when running the car on a 40 degree day vs 75 degree day. I can only imagine what 20 or even 10 degrees will feel like...

So I LOVE the sound my homemade AEM/short ram intake makes on my 1.4 turbo. The sound of the BBV is a beautiful thing. What I'm wondering is.... are all those sounds audible outside the car, or just from inside? I've not had the opportunity to drive past anybody I know, and nobody else drives...

Forgive me if any of these questions have already been definitively answered... I recently discovered that I can get cheap E85 in my area...and I'm considering requesting a special E85 tune. I have the following questions... 1.) With an E-85 tune, are bigger injectors absolutely mandatory? 2)...

So I found this spoiler from BMC customs while surfing the web. I've always liked the look of the factory spoiler on the hatch, but thought something a little bigger or more dramatic might be nice. This spoiler seems to be the same depth, but is flared/more dramatic at the top. What do you...

TROUBLE CODE U0100. I just tried to upload my new Trifecta Tune to my sonic. I made several attempts in which I got an error code saying the cable was not connected. I verified again that cable was connected to computer and car....all appropriate software was in place....this time EZ flash...

I'm eventually going to get a CAI for my 1.4T, but I want to go with a dry option. So far the options I've seen are the ZZP intake (oiled filter) and the redneck K&N do-it-yourself option (oiled). Is anybody making a dry filter system with heat shield yet? -Thanks -Dan

So I'm noticing a winding/spinning/clicking noise coming from my engine when I first start it up and it's relatively cold. The noise only occurs when I'm gently revving the throttle at relatively low rpms. It goes away at higher rpms, and seems to disappear entirely once the engine is warmed...

Who here thinks that a deeper OEM rear spoiler would look really nice on our cars? Think anybody in the aftermarket will make one eventually?

We all know that from the factory, the 1.4t hatchback is compared to cars like the Nissan Versa and Honda Fit with its power to weight ratio. While the car is fun to drive, many refer to it as simply "sporty". For those of you who have been running an aggressive tune w/premium/intake/exhaust...

I'm in the process of piecing together my exhaust system. My present plans are to delete the second cat and bolt in some straight pipe, then remove the factory resonator behind the second cat and bolt in a 4 inch magnaflow muffler, then cut out the factory muffler and run a piece of straight...

I'm a little confused....I'm hearing that the best setup on the 1.4T is a 2nd cat delete w/straight pipe and resonator. I also heard that magnaflow made a good 2.25 resonator, but all I can find are mufflers. Are high flow mufflers and resonators the same thing, or am I specifically looking...

So how can us turbo owners make the turbos sound a little more audible and more noticeable on our cars? I heard somebody mention that aftermarket intakes help. Is this the general experience on the forum? Are there any other reasonably inexpensive mods that make the turbo/turbo functions...