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Exhaust smell from HFC?

Old 04-04-2018, 04:01 PM
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Default Exhaust smell from HFC?

Hey all,

I have noticed about a month ago that when the windows or top is down I will sometimes notice a minimal to moderate exhaust smell. I'm thinking the smell could be from my Berk HFC that was installed about 6 months ago, thoughts? I do have a small radiator leak...not sure if that could be part of the issue. The radiator (KOYO) and hoses (OEM )are being replaced this weekend.
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Old 04-04-2018, 04:35 PM
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Coolant has a sweet odor. Difficult to mistake for exhaust smell.

You have a hfc, so thinking maybe you have an aftermarket cat back. Which means its probably a bit loud. Which means maybe you wouldn't easily hear an exhaust leak. So, maybe check for that.

A hfc that is going bad often has a rotten egg smell.
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Old 07-15-2018, 06:31 PM
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So I had my front brakes replaced including rotors, calipers, and pads, as well as the new radiator installed. The majority of the smell has stopped, but I still get an occasional slight exhaust smell for a second or two at stops. I suppose I should take it to a muffler shop...it has the berk HFC and UK mod on stock exhaust. My AP1 does go through ~1 quart every 1000 to 1200 miles.
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Old 07-18-2018, 09:17 AM
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I have the Berk HFC and UK mod done on my car as well. The slight exhaust smell is normal mainly but it's mainly due to the HFC. I had the UK mod done first and it had no change from stock (smell wise).
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Old 07-18-2018, 10:54 AM
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Berk high flow cat and Tanabe Medalion Touring on my car. Backed into the garage (of course). If there was gonna be any smell I'd notice it. Not a thing.

-- Chuck
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Old 07-18-2018, 11:03 AM
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you will get some exhaust smells in some conditions, mainly cold idle. That's the reason the HFC has a built in anti-fouler as it does not convert as well as an oem cat. Nothing to worry about though.
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Old 07-18-2018, 11:06 AM
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I have a little exhaust smell from my HFC, 2500 miles on it, things could be worse.
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