So.. I have a 2011 G37s coupe 6MT with takeda short ram intake, and a CNT test pipe installed. Today I had to drop off my car at the dealership and got a 2013 G37 sedan automatic for a loaner car. My question is, is it just me that the 2013 g37 sedan feels faster than my coupe? Like the way it pulls on 1st and 2nd gear feels like it pulls a lot harder than mine.. Some of my friends suggested cleaning my fuel system will bring a little hp back. Would this really help?

 

its kinda true

sedan lighter than coupe

then again you will need a tune but dont get that until youre done with mods

 

With the breather mod and the test pipe you will be running a little lean. A tune should get you where you want to be. I've heard a few times but not sure if it is true that the sedan does get off of the line quicker than the coupe. I'd look into a tune, but as ***** said, "not until you are done with the performance bolt-ons".

 

Yeah I'm planning on doing an Uprev tune after I'm done with mods. I was just surprised by the responsiveness of the sedan and how it pulled. I was like WTH?

 

True .. In fact 07-08 HR sedans are faster than +08 coupes too!
Tried that before when i was stock so i know.

 

Breather mods slightly reduce low end torque especially untuned. Then you have the 7-speed vs the 6 and the weight difference etc..

 

Automatic = quicker. (Truth: My ten second STI lost a stoplight challenge to a milf in an auto Murano. I"ll never forget that. It convinced me to go auto and get the VQ37 engine.)

Manual = More control. Often more fun.

The OEM tunes/cam timing on a 4dr 7at are probably geared towards low and midrange, and the tune of the 6MT coupe is biased towards mid and upper. I'm speculating on this.

Coop

 

Short ram intake is a engine choker that sucks in more hot under hood air then anything. Put your stock air boxes back on and I bet its better. But you'll loose the throaty intake rasp, gain everywhere else.

 

Agree with Sam and SharpbyCoop...the gearing in transmission of 7AT will rev quicker in first two gears than your 6MT. Or so one would imagine

 

Sedans are faster because coupe weigh more.

 

Best thing I've read all day.

 

Really? 2 less doors seems like it would weigh less?

 

^ doesn't have to do anything with 2 vs 4 doors ..
it's all about chassis built which is always a bit more heavier/stiffer in coupes than sedans ( when talking about the same model). And if it's convirtable, then it's even heavier than coupes here. Manufacturer make them that way for a purpose.. Safety purpose, as they usually come with soft top so they strengthen the chassis a lil bit more to minimize rolling over risks.