[pdisme]

Hi all, won't even have my car until tomorrow but can someone give me a breakdown of what each segment of the GT-R's exhaust system is called? I'm assuming once you get past the headers the downpipe does what it sounds like and goes from header down to the underside of the car, midpipe picks up from there to the rear, then exhaust? I'm trying to get all the terms right so as I read threads about +/-'s of doing different things, I know what exactly is being replaced.

Expanding on the above, it sounds like the factory setup is two cats but they're in different segments so you have the potential to replace one part of the overall system but still have one factory cat still in place?

Final question for now, what's the functional difference between a resonated and non-resonated midpipe?

 

[toprpm]

Mainfold--> turbos--> downpipe --> Y pipe--> Catback.

The different is sound level only , it takes drone from loud systems. But it have less effect on HP gains.

 

[pdisme]

Ah, thanks; this is my first turbo car so some of this is all new to me. I'm not too concerned with power gains but would like to increase the sound since after driving my friend's, I'd like it a bit louder; I wouldn't want it to have an annoying sound though, so more research I guess.

 

[HKBruin]

Midpipe = Y-pipe, correct?
Can someone define what a "drone" means?

 

[pdisme]

Midpipe = Y-pipe, correct?
Can someone define what a "drone" means?

I think it's an annoying resonance at cruising speed.

 

[alexdavis]

I think it's an annoying resonance at cruising speed.

For me, it's about 2500 to 3000 RPM (midpipe, but stock downpipes and exhaust). I have a resonated midpipe; I personally would be less pleased (I think) with a non-resonated one.
But then, I'm uncomfortable with too much noise...

Alexd

 

[pdisme]

How did the sound change for you by doing just the midpipe? Is one (or both) of the factory cats on the midpipe?

 

[king360]

Both the oem downpipes and midpipe have cats on them.

 

[pdisme]

Got it; thanks for posting the pics.

 

[pdisme]

If I replace the midpipe and exhaust strictly for sound, is a tune required to prevent engine issues or will it be fine? I think I've seen conflicting things about whether or not that can cause problems, or perhaps that was when intake adjustments were also made which resulted in the car running lean?

 

[leaveit2bevo]

Just the midpipe and exhaust is fine without a tune, youll even pick up about 20hp.

 

[alexdavis]

How did the sound change for you by doing just the midpipe? Is one (or both) of the factory cats on the midpipe?

The resonated aftermarket midpipe has no cats...it's also significantly lighter than the OEM midpipe. The noise didn't really change; just somewhat louder. And it's most apparent in a certain RPM range.

Alexd