dnimi123

Well depends. As most know im a fan and owner of Kline inconel with full system including headers on my 21 GT4. I have heard many of the usual suspect exhausts in person from Soul, Fabspeed and Akra (not my cup of tea as these are too boomy and bassy) to JCR rear. I will have to say that the JCR gives a higher pitched very exotic sound and that in that specific department the Kline is #2. Overall however, Kline is the clear winner when price, material, construction/fit/finish, reduction of cabin drone and everything is considered. I would not have the JCR in a GT4 and only for the Spyder as the drone would be unbearable for most. Hit Eric @SupremePower up as he can help you get set up and answer any and all questions on these systems...

6IXSPD

Hit me up if you’re in Toronto in the Fall and we can fix that

incursion

Anyone else have issues with the OEM tip fitment? The right tightened just fine with 17 ft. lbs., but the left is still loose even when it's fully tightened. Could it be a tolerance issue with the Kline Stainless?

RoadrunnerGTS

I had this issue. Contact vendor and they will resolve it with Kline.

The fault seems to be with the adjustment range of the OEM tips varies and the Kline pipe exits is on the very edge of the tightest for the OEM tips. If you are in a rush for a solution there are 2 simple solutions:
1. Pipe expander 1-2mm or;
2. On the OEM tip you will notice 2 metal wedges that come together when tightened near the bolt thread, grind 1-2mm off these with a dremmel.

964C4

Hi!

I did not like the construction/appearance of KLINE headers; the CARGRAPHIC headers tubing look that they flow the air better

Up to today, still on stock programming, no ECU tune -- Up to now, I do not know about any reliable source with proven dyno graphs that looks encouraging and pricing is crazy...

incursion

@RoadrunnerGTS ​​​​​​, Thanks for the quick reply. Please tell me you didn't have to uninstall your exhaust, send it back to Kline or the vendor, and then install another exhaust.

RoadrunnerGTS

No, although that was offered by Kline as their customer service is outstanding. However, that wouldn't have resolved the issue as the problem wasn't with the Kline muffler, it is with the OEM tips. Get out a set of vvernier calipers and measure the Kline muffler diameter, and you'll see they are likely the same either side. It is the OEM tip that is inconsistent, and both fixes I posted above are a simple 15 min job.

An argument could be that Kline should make their piping 2mm wider, as it is obviously a bit too close to the end of the smallest range of the OEM tips.

If you purchased from Eric@Supreme, just reach out to him for help.

incursion

@RoadrunnerGTS, Fix number one is on the exhaust side though, isn't it? My friend just shimmed it with aluminum foil for now.

RoadrunnerGTS

Yes, fix 1 is exhaust side, fix 2 is on tips. Prefer fix 2. Just unwind the OEM clamp and grind down 1-2mm off those semi-circular metal spacers.

I wouldn't expect the alu foil solution will last very long. Careful, you may lose the tip.

UncleDude

some nice sounds clips on the last slide

Instagram

View this post on Instagram

voods

So I got my kline catless headers. The fitment isn't great. It's not possible to use the o2 sensor without using a 90 degree spacer. The right side pipe touches the heatshield at one section.
The sound is crazy loud now in combination with my akra OAP and stock muffler, but I only use this on track with no restriction on sound. It probably needs resonated OAP's to tone down some of the rasp.
Added sound clip of a flyby on track.

The random chinese o2 spacer I'm using still gives me a CEL. Anyone have a working 90 degree spacer recommendation?

LoodorneGT4

you’re the first I see doing this combination…i think everyone here did Kline header with kline catback .

incursion

GoPro Hero 11, Kline Stainless, 718 GT4 with Henry Chea engine cover, windows fully down

https://gopro.com/v/Xlq4QLqMO9E6L

Stock for comparison:

https://gopro.com/v/7aWomyKZM43EG

UncleDude

I can’t get those links to work @incursion

incursion

Weird, I just tried them in an incognito tab in a different browser, and they worked.