High boost on OEM cats

1BADM3 · 07-09-2016, 05:17 PM

I have a buddy who just picked up a 335i and wants to run his car at the track he is FBO but has oem cats. Could he turn up the boost to 18-19 on e85 and be ok for 1 night with oem cats?

TrollToll · 07-09-2016, 06:03 PM

Quote:

Originally Posted by CoreI5

idiots smh, forgot why people stay away from this forum.

Hey man, hate to be the bearer of bad news, but you're still on this forum.

stanlalee · 07-09-2016, 10:26 PM

If he had oem primary cats he's not FBO but that's a loaded question. At what rpm range, with what timing curve, with what fuel? There is no concrete answer. If he has factory cats and is running low timing, peaks at 19 and tapers aggressively after 4500rpm or running ethanol still with boost tapered accordingly sure. I've been doing it daily for years and 80k of my 160k miles.

07-09-2016, 05:17 PM	#1
1BADM3 First Lieutenant 74 Rep 394 Posts Drives: BMW 335 Join Date: Sep 2015 Location: usa iTrader: (2)	High boost on OEM cats I have a buddy who just picked up a 335i and wants to run his car at the track he is FBO but has oem cats. Could he turn up the boost to 18-19 on e85 and be ok for 1 night with oem cats? __________________ 08 E82 135 -jpworkz 6870 top mount built motor 10 E92 M3 - Ess 650 Supercharger 18 BMW 530e - stock
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07-09-2016, 10:26 PM	#3
stanlalee Major 261 Rep 1,093 Posts Drives: 07' E92 335i manual Join Date: Oct 2013 Location: Newport News, Va iTrader: (0)	If he had oem primary cats he's not FBO but that's a loaded question. At what rpm range, with what timing curve, with what fuel? There is no concrete answer. If he has factory cats and is running low timing, peaks at 19 and tapers aggressively after 4500rpm or running ethanol still with boost tapered accordingly sure. I've been doing it daily for years and 80k of my 160k miles.
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