Kline 718 GT4/Spyder exhaust
#1336
Racer
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I might still add the headers, but I am definitely enjoying mine more now.
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#1337
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Any good options that would allow me to pass the CA smog test?
#1338
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Here's a drive by with the stainless steel system. Fantastic system and value.
https://youtu.be/MJ2RGm-y0-U
https://youtu.be/MJ2RGm-y0-U
Do you have full Kline system: 200 cell headers + oap + rear box?
or only oap + rear box?
#1339
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#1340
#1341
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I have the heat shielded version, took 3-4 weeks to arrive. There really is only upside to having the OAP shielded, the exhaust runs very close to suspension components. I'm not convinced it reduces the volume materially, but if your really concerned get it Jethot coated instead. For a tracked car I would not run without shielding.
#1343
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So not cooler but relatively the same temp as the OE with shieldling and the outside temp was higher too when we measured the Kline
Temperature outside
59 deg when tested stock
74 deg when tested w Kline SS OAP + Rear Valvetronic
We have another 718 4.0 car coming into do an inconel system. Will be measuring it too. We will try to do it in the afternoon so the ambient temp is the same for before and after
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SupremePOWER Inc
1562 Kimberly Ave - Fullerton CA 92831
Contact: sales@supremepower.com - Shop# (714)632-1951
World's Largest Retailer/Distributor of BBS Motorsport & Street Wheels from 2015-2023
Huge Inventory: BBS, Kline, Brembo, Soul, Recaro, KW, Akrapovic & 200+ brands. Installation available
** Retail & Wholesale ** Global Delivery ** We match/beat any authorized dealer's price **
SupremePower.com // SupremeForged.com // Follow SupremePower on IG
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LooseNut (04-19-2023)
#1344
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We measured a 7 degree increase w the non shielded Kline OAP was 7 degrees higher than the shielded OE w filter in place.
So not cooler but relatively the same temp as the OE with shieldling and the outside temp was higher too when we measured the Kline
Temperature outside
59 deg when tested stock
74 deg when tested w Kline SS OAP + Rear Valvetronic
We have another 718 4.0 car coming into do an inconel system. Will be measuring it too. We will try to do it in the afternoon so the ambient temp is the same for before and after![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
So not cooler but relatively the same temp as the OE with shieldling and the outside temp was higher too when we measured the Kline
Temperature outside
59 deg when tested stock
74 deg when tested w Kline SS OAP + Rear Valvetronic
We have another 718 4.0 car coming into do an inconel system. Will be measuring it too. We will try to do it in the afternoon so the ambient temp is the same for before and after
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
#1345
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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?
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?
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Anyone had similar issues?
#1346
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That is good info, Eric. What would be even more interesting would be to measure rhe temps of the suspension components that everyone seems to be worried about....can't imagine that a 7 degree increase in OAP temps equals same increase in the suspension. I'd guess maybe less than 5 degrees there.
#1347
Pro
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We measured a 7 degree increase w the non shielded Kline OAP was 7 degrees higher than the shielded OE w filter in place.
So not cooler but relatively the same temp as the OE with shieldling and the outside temp was higher too when we measured the Kline
Temperature outside
59 deg when tested stock
74 deg when tested w Kline SS OAP + Rear Valvetronic
We have another 718 4.0 car coming into do an inconel system. Will be measuring it too. We will try to do it in the afternoon so the ambient temp is the same for before and after![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
So not cooler but relatively the same temp as the OE with shieldling and the outside temp was higher too when we measured the Kline
Temperature outside
59 deg when tested stock
74 deg when tested w Kline SS OAP + Rear Valvetronic
We have another 718 4.0 car coming into do an inconel system. Will be measuring it too. We will try to do it in the afternoon so the ambient temp is the same for before and after
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
I didn't measure it, but every time I parked after a long spirited drive and was folding the roof up in my spyder with OEM OAP, it burned my leg here in Florida. After the Kline system, this does not happen.
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impinth06 (04-20-2023)
#1348
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The aftermarket OAP cools down significantly faster than the original with the filter in place.
#1349
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Measuring static temps after a street drive is interesting, but doesn't tell you what peak heat radiation will be at wide open throttle. On track you spend a huge amount of time at or close to it. The fact temps are higher after cruising around on the street without the stock OAP filter (which traps a ton of heat) does not give me any comfort that running without shielding would be a good idea.
If you want the peace of mind, go ahead and get the shielding or do the jet hot coating. Wont have to think about it any longer….
#1350
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Heat degrades components over time, it's not something that will necessarily be obvious right away.