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RC F Exhaust on IS 500!! Invidia Full Cat Back

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Old 02-24-23, 06:19 PM
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Civib2
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The RR droned in both valves open and closed….
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Old 02-26-23, 09:06 AM
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Lets Hear This.....
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Old 02-26-23, 10:02 AM
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Here are some light revs, wasn’t completely warm so I didn’t go really past 5k. I have another cold start vid I’ll have to shrink for it to upload.
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Old 02-26-23, 10:05 AM
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Cold start
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Old 02-28-23, 10:04 PM
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@Civib2 can you please post an updated pic of the exhaust tips to bumper after replacing the rubber isolators please? thanks in advance!
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Old 03-01-23, 05:25 AM
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Originally Posted by cp2
@Civib2 can you please post an updated pic of the exhaust tips to bumper after replacing the rubber isolators please? thanks in advance!

here you go, these pics are with the new isolators I used that were about a 1/4” longer.






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Old 03-01-23, 11:38 AM
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thanks for the pics! do you still have any concerns with heat from the exh messing w/ the diffuser or do you think the space is sufficient? also, any mods to the hangers for installation?
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Old 03-01-23, 12:56 PM
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Originally Posted by cp2
thanks for the pics! do you still have any concerns with heat from the exh messing w/ the diffuser or do you think the space is sufficient? also, any mods to the hangers for installation?
Zero concerns with the heat. It actually didn’t even create an issue when it was closer before I added the new longer isolators. I think the space is sufficient for sure.

I did ZERO modifications to the hangers themselves.
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Old 03-13-23, 07:38 AM
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No CEL so far?
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Old 03-13-23, 08:28 AM
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No CEL so far and now have about 700 miles on since the install.
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Old 04-10-23, 11:15 AM
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Thank you for sharing. I installed the same exhaust and used the gaskets you suggested. No CEL after 1000 miles and sounds great.
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Old 04-29-23, 09:49 AM
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Default RC F and Invidia cat back system exhaust leaks
Hi,
Got a 2019 RC F with Invidia cat back system. Have had continued problems with engine warning light coming on which is a leak downstream from the cats...both sides. Has been into Lexus twice now with the latest fix lasting less than 24 hours. While the system is well made it's very lound and the continued exhaust leaks is becoming a real pain. I've owned SC400s for a long time and this was definitely an upgrade...actuall no comparison between the 2 cars. However the sc400 was NEVER in the shop. The RC F is becoming "Kristine" (id you've seen th emovie you'll get this) on steroids.
Solutions anyone?
Thnx DR
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Old 04-29-23, 01:50 PM
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Originally Posted by dagored
Hi,
Got a 2019 RC F with Invidia cat back system. Have had continued problems with engine warning light coming on which is a leak downstream from the cats...both sides. Has been into Lexus twice now with the latest fix lasting less than 24 hours. While the system is well made it's very lound and the continued exhaust leaks is becoming a real pain. I've owned SC400s for a long time and this was definitely an upgrade...actuall no comparison between the 2 cars. However the sc400 was NEVER in the shop. The RC F is becoming "Kristine" (id you've seen th emovie you'll get this) on steroids.
Solutions anyone?
Thnx DR
Yes, use quality gaskets. The OEMs are difficult to seat right, even the dealer has issues. Using the gaskets I listed leave no room for error and provide an excellent seal.
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Old 04-29-23, 02:40 PM
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And you suggested using which gaskets...the Grimm 3" ss 2 x thickness or their single thichness 3"? Sorry for the redundancy.
DR4
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Old 04-29-23, 04:12 PM
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Originally Posted by dagored
And you suggested using which gaskets...the Grimm 3" ss 2 x thickness or their single thichness 3"? Sorry for the redundancy.
DR4
Look at his post in the beginning. He used various gaskets at various points of the exhaust.
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