If it looks and sounds good plus makes more power than stock you cant really complain. ~5 peak whp more makes zero difference in the grand scheme of things. The only thing it DOES is help your ego when you tell someone how much hp you are making.

Gains from one exhaust manufacturer to another are negligible in most cases unless flow is being impeded by a smaller diameter pipe compared to a larger one. I like to analogize it to running. Try running only breathing from your nose, then try from just your mouth. There will be a huge difference. Now if you use both your nose and your mouth, the difference will not be felt in your performance. Yes you paid for sound and a "smoother" power curve, but I would consider it a decent upgrade if the sound quality is exactly what you wanted and the build quality is superior. Hell, after you sell your Invidia exhaust, it will help swallow that $1600+ pill. Your exhaust sounds amazing by the way, one of the best I've heard.

Excellent point but for the purposes of being an independent test I specifically wanted to avoid directing or telling the dyno operator/tuner (Sebastian) what to do. ...It should be as if I wasn't even there.

My reasoning is the only time an objection should really be made if something is intentionally slanted but I saw nothing like that so I stayed hands off.

Yep :iagree:

I don't agree with the OP's "Buyer Beware" statement.

That should be reserved for the other vendors on this forum and their questionable/shady business practices.

+1 ^^ Definitely uncalled for.

lol couldn't agree more.

But i'm still waiting if someone can replicate the result's Tony did when he announced the Shockwave.

Still on the fence between this and FIs.

buyers should beware...be very aware about how tony is not in here talking bad about anything or that your lieing..be aware that he is saying "Hey if thats what you got thats what you got and Im very happy that you did that comparison and I encourage everyone who buys my exhaust to also compare it and give the community your honest opinion"...

Pictures of the day.

Swapping parts.
http://www.motordyneusa.com/media/ku...6/IMG_3033.JPG


We did some experimentation with the tips so you can see what some of the options and possibilities are.
5" tip extended.
http://www.motordyneusa.com/media/ku...6/IMG_3034.JPG


5" tip retracted.
http://www.motordyneusa.com/media/ku...6/IMG_3035.JPG


Rear view of 5" tip. It can also be adjusted vertically up or down.
http://www.motordyneusa.com/media/ku...6/IMG_3036.JPG


Rear view of 4.5" tip for comparison. Which do you like best? 5.0" or 4.5"?
http://www.motordyneusa.com/media/ku...6/IMG_3037.JPG

Straight edge stainless tips.
http://www.motordyneusa.com/media/ku...6/IMG_3038.JPG


http://www.motordyneusa.com/media/ku...6/IMG_3040.JPG


http://www.motordyneusa.com/media/ku...6/IMG_3041.JPG


http://www.motordyneusa.com/media/ku...6/IMG_3042.JPG


http://www.motordyneusa.com/media/ku...6/IMG_3043.JPG

I guess if you want it looking bulging back there, then the 5's, but with that airdam i think the 4.5's are framed nicely.

I also prefer rolled and straight silver, not "burnt" :)

I am not usually a fan of big tips on any car to say the least, but in this case, I am really digging the 5" tip and how it appears to "fill in" the space under the diffuser. :)

Did you guys get a weight difference between the E370 and the Gemini?

idk, i think i like the 4.5" silver straight tips the best.

No, weight was not measured.

I'll keep that in mind :tup:

I like the 4.5 tips on that diffuser. I think I like the 4.5" on a stock bumper with them sticking out a bit.
The 5" looks good tucked back a bit, and I think it will be great on a blacked out OEM rear center section.


Thanks for the honest review info on the 7AT, OP.