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BMW 3-Series (E90 E92) Forum
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Downpipes - Before & After
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| 02-22-2010, 05:27 PM | #1 |
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Downpipes - Before & After
Still not sure if I will do the FMIC alone or if I will go DP also...
What is your experience...?
Thank you!
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E92 335i '07 6MT
Procede V4 | AMS FMIC | AR Catless DP | BMS DCI KW V1 | H&R Sway Bars |
| 02-22-2010, 05:37 PM | #2 |
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1. yes
2 yes its much better for sure 3 this question is difficult....if you get catted DPs then it will be almost the same sound as stock....Catless it will still not drone all that much, but the exhaust tone will be louder compared to stock....You had a totally catless system with aftermarket exhaust and there will be some drone....some more than other depends on exhaust system 4 You will hear the turbos spool more 5 There are gains for sure, the exact HP I would say somewhere between 10-15 hp maybe more 6 If you get catted, then you should be okay, but if you get catless, it depends on state your in, but if you leave secondary cats in place, I don't know if it will pass. |
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| 02-22-2010, 05:42 PM | #3 |
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Joint Chiefs of Staff
 
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In order to pick which to do first, FMIC or DPs I would consider how hot it gets where you are. If you are in a VERY hot climate then do the FMIC first and then DPs. But at the end of the day do both
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| 02-22-2010, 05:52 PM | #4 | |
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Quote:
Just not too sure about the DP...
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E92 335i '07 6MT
Procede V4 | AMS FMIC | AR Catless DP | BMS DCI KW V1 | H&R Sway Bars |
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| 02-22-2010, 05:54 PM | #5 |
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lots of people make the mistake of getting dps before upgrade fmic's, trust me FMIC. what good is all that extra power when the engine starts pulling timing..., mmm..heatsoak ftl.
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| 02-22-2010, 06:45 PM | #7 |
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I think you'll be really happy with catless DPs.
It's not just the power gain; it's also the faster spool/better throttle response. The slightly louder engine sound at WOT is an added bonus, IMHO. Like other posters mentioned, you'll need an upgraded FMIC to go with those DPs. Also +1 on the relative importance of the FMIC upgrade being climate-dependent. |
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| 02-22-2010, 07:02 PM | #8 | |
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Quote:
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Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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| 02-22-2010, 08:46 PM | #9 |
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hi
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Dps first IMO, good hp gain, faster/louder spool and great sound.
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2022 M Sport G05
Jb4, CTS catless dp, M performance exhaust, bms intake, IND goodies, Maxton kit |
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