I bought an FD a couple of months ago, and it has a kind of APEXi exhaust on it. at first i thought it was the N1, and it looks almost exactly like it, except it has a 110mm tip, while N1's have a 115mm tip. anyone know what kind it might be? I know its genuine due to the APEXi logo and serial number located on the bottom of the muffler.

 

To my knowledge, Apexi doesn't make a 110mm tip for the RX-7. Are you sure you weren't a bit off center when measuring?

Maybe it's a universal muffler with a different tip?

 

heres some pix yea i know its dirty

 

Notes:
N1 Universal Turbo
Pipe 80mm / Tip 115mm

Apexi Mufflers are Universal application muffler canister and tip. Does not incude cat-back piping. Due to the overwhelming popularity and benchmark standard of the N1 Mufflers, it was only natural that this muffler was offered as a universal. Now, the N1 muffler can be enjoyed on virtually any vehicle. Similar to the cat back system, the N1 universal uses premium polished SUS 304 stainless steel constructed using both robotic and hand crafted welding. Straight through design ensures maximum power on properly tuned exhaust systems. The N1 Universal incorporates a 60mm (2.36 in.) inlet and 90mm (3.54 in.) tip for naturally aspirated applications and an 75mm (3 in.) inlet with 115mm (4.53 in.) tip for turbocharged vehicles. Since this muffler is universal, the output angle of the exhaust can also be determined by the customer during installation. Create your own custom N1 look while enjoying the power!

 

Apexi GT spec catback.

 

ok maybe im wrong i just measured again and it was ~114 mmOD. is the tip measurement ID or OD

 

I don't think it is, the GT has a different canister design. It looks like the N1 but since it doesn't have the same spec tip according to the OP I'm at a loss, maybe something from a few years back.

Edit: In that case scratch what I said, it's probably an N1.

 

The N1 universal turbo is a muffler only, the entire catback system is an apexi gt spec.

here is a picture of the GT Spec:
http://www.dtmautohaus.com/store/ima...exi_gtspec.jpg

 

No, they're two seperate cat-back exhausts-
Apexi GT-
http://www.apexi-usa.com/product_exh...=181&pageNum=1
Apexi N1-
http://www.apexi-usa.com/product_exh...=178&pageNum=1

 

according to the apexi website we're both right

 

Thanks,
That's right

 

I'm not going to argue, they are different from the diameter piping used to the muffler can.

 

is there any way you can tell from the S/N?

 

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