2nd cat delete dyno

MrZippy · 05-18-2009, 11:04 AM

Anyone have a dyno comparison of before and after doing the 2nd cat delete ON A CAR THAT ALREADY HAS DPs (and an intake and tune of course)???

Zeph · 05-18-2009, 12:58 PM

Would be somewhat interesting. I feel like changing the DP's OR exhaust (including 2nd cats) gives about the same power, maybe a slight edge to the DP's. I don't really think changing both adds much more power over just changing 1. Sound is where it will get noticeably different. I could be wrong!

MrZippy · 05-18-2009, 01:06 PM

Yep, that's why I'm hoping someone has some dyno data on this. $300 for 4hp is a no-go. $300 for 8hp is OK.

skitlz · 05-18-2009, 01:58 PM

Im about to install my Catless DP's, and was planning on doing a 2nd cat delete as well (for performance and sound). But the exhaust shop i went to said they wont do it

bastiges, lol. And why are you guys saying $300?? i dont see it being more then a hour job to cut the sections out, slap in some new pipe and weld it up. /shrug

I did however get the muffler delete done

Goraiders21 · 05-18-2009, 06:06 PM

http://www.e90post.com/forums/showthread.php?t=263157

theres my dyno sheet from saturday maybe u could get an idea, and btw you whouls not pay a dime more then 100-150. i got mine out for 150 took 30 min

MrZippy · 05-19-2009, 12:16 PM

Quote:

Originally Posted by skitlz

Im about to install my Catless DP's, and was planning on doing a 2nd cat delete as well (for performance and sound). But the exhaust shop i went to said they wont do it

bastiges, lol. And why are you guys saying $300?? i dont see it being more then a hour job to cut the sections out, slap in some new pipe and weld it up. /shrug

I did however get the muffler delete done

$300 for the Riss Racing pipes. Would be cheaper to have a shop cut them out.

Still no clear answer here.

pronacyk3 · 05-19-2009, 01:22 PM

LOL are you really going to notice +8hp?

Quote:

Originally Posted by MrZippy

Yep, that's why I'm hoping someone has some dyno data on this. $300 for 4hp is a no-go. $300 for 8hp is OK.

MrZippy · 05-20-2009, 08:34 AM

I doubt it but I just like to get every drop of hp from the thing as long as the $/hp is low enough.

absix · 05-20-2009, 12:02 PM

Quote:

Originally Posted by MrZippy

$300 for 4hp is a no-go. $300 for 8hp is OK.

The extra 4hp make so much difference? Seriously?

05-18-2009, 11:04 AM	#1
MrZippy Private First Class 17 Rep 185 Posts Drives: :sevirD Join Date: Jul 2008 Location: USA iTrader: (2)	2nd cat delete dyno Anyone have a dyno comparison of before and after doing the 2nd cat delete ON A CAR THAT ALREADY HAS DPs (and an intake and tune of course)??? __________________ had an '08 335i e90
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05-18-2009, 12:58 PM	#2
Zeph Major 30 Rep 1,410 Posts Drives: 2008 E92 335i 6MT SGM CR/BD Join Date: Jul 2008 Location: Southeast USA iTrader: (0)	Would be somewhat interesting. I feel like changing the DP's OR exhaust (including 2nd cats) gives about the same power, maybe a slight edge to the DP's. I don't really think changing both adds much more power over just changing 1. Sound is where it will get noticeably different. I could be wrong!
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05-18-2009, 01:06 PM	#3
MrZippy Private First Class 17 Rep 185 Posts Drives: :sevirD Join Date: Jul 2008 Location: USA iTrader: (2)	Yep, that's why I'm hoping someone has some dyno data on this. $300 for 4hp is a no-go. $300 for 8hp is OK. __________________ had an '08 335i e90
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05-18-2009, 01:58 PM	#4
skitlz Private First Class 8 Rep 183 Posts Drives: e92 335i Join Date: Sep 2008 Location: Sac iTrader: (0)	Im about to install my Catless DP's, and was planning on doing a 2nd cat delete as well (for performance and sound). But the exhaust shop i went to said they wont do it bastiges, lol. And why are you guys saying $300?? i dont see it being more then a hour job to cut the sections out, slap in some new pipe and weld it up. /shrug I did however get the muffler delete done
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05-18-2009, 06:06 PM	#5
Goraiders21 Entizy 7 33 Rep 256 Posts Drives: C63 Coupe, Retired M6, 335i Join Date: Jan 2009 Location: Southern Orange County iTrader: (2)	http://www.e90post.com/forums/showthread.php?t=263157 theres my dyno sheet from saturday maybe u could get an idea, and btw you whouls not pay a dime more then 100-150. i got mine out for 150 took 30 min __________________ Muffler Delete / Tiag&Cf Aero Lip / CF M3 Lip / CF Mirror Covers / CF Roof / Blacked Out: Grill, Tail lights, Window Trim, Powder Coated Rims / CF Emblems
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05-20-2009, 08:34 AM	#8
MrZippy Private First Class 17 Rep 185 Posts Drives: :sevirD Join Date: Jul 2008 Location: USA iTrader: (2)	I doubt it but I just like to get every drop of hp from the thing as long as the $/hp is low enough. __________________ had an '08 335i e90
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