Where to go next with increasing performance

slo_335-e90 · 08-28-2012, 10:30 AM

Hey guys,

So at this point I've reached a point where I'm not sure where to turn for the next upgrade to my car. At this point I've done just about everything excluding the downpipes, and while I know those will be a huge benefit with everything else I'm running unfortunately if I threw those on my car I think I'd get endlessly harassed by police in my town (the AA exhaust is great but its a bit louder than I expected). Without changing the turbos, what would any of you guys recommend to look into next?

Any help would be great, thanks everyone

ihc95 · 08-28-2012, 10:46 AM

Not sure if theres anything that can make your car go any faster, but a STETT cold air intake and oil cooler will make your car run better and who knows maybe free up a few ponies.

335twins · 08-28-2012, 10:53 AM

meth?

CoralRed335XI · 08-28-2012, 10:54 AM

vtec stickers

slo_335-e90 · 08-28-2012, 10:57 AM

Quote:

Originally Posted by 335twins

meth?

I just recently installed a meth kit, but thanks anyways!

slo_335-e90 · 08-28-2012, 10:57 AM

Quote:

Originally Posted by CoralRed335XI

vtec stickers

already got em

slo_335-e90 · 08-28-2012, 10:59 AM

Quote:

Originally Posted by ihc95

Not sure if theres anything that can make your car go any faster, but a STETT cold air intake and oil cooler will make your car run better and who knows maybe free up a few ponies.

hmm I'll look into the intake. I have an Injen but I've been recommended to try others

CoralRed335XI · 08-28-2012, 11:02 AM

Downpipes def are next. A pain to install and pass emissions inspection. Nothing a handshake with a benjamin can't fix

. Racegas and racegas maps couldnt hurt either.

slo_335-e90 · 08-28-2012, 11:09 AM

Quote:

Originally Posted by CoralRed335XI

Downpipes def are next. A pain to install and pass emissions inspection. Nothing a handshake with a benjamin can't fix

. Racegas and racegas maps couldnt hurt either.

I'm not worried about inspection...I got friends to help with that

but im worried about the volume. I had downpipes once, but on the stock exhaust setup...catless DP's would mean the car has only mufflers, which isn't necessarily a bad thing buttttt wouldn't it make it very loud?

5soko · 08-28-2012, 11:11 AM

DEf DP's.. throw the stock catback exhaust on if you have to.. It lets the turbo breathe out alot more..

Throw some E85 mix in there..
Rb's after that.

ar design II · 08-28-2012, 11:16 AM

Quote:

Originally Posted by 5soko

DEf DP's.. throw the stock catback exhaust on if you have to.. It lets the turbo breathe out alot more..

Throw some E85 mix in there..
Rb's after that.

+1. With the majority of gains in exhaust mods coming from dp's not the rest of the exhaust that would be the best mod for power.

secretsquirrel · 08-28-2012, 11:18 AM

I don't know about the cops in your area, but I don't know of many people who have issues with cops and volume from aftermarket exhausts on later model BMWs. Traffic stops for volume are largely subjective and cops often ignore "nicer" cars for such things.

MilehighM3 · 08-28-2012, 11:31 AM

What about hugh flow cat dps or resonated dps to help with noise? Definitely the next step...

enrita · 08-28-2012, 11:33 AM

High Flow catted dps.
Keep the intake you have , you wont gain anything by changing it.

sickem · 08-28-2012, 11:34 AM

put a drum of E85 with a hand pump in your garage. oh, and let me use it. LOL. do the downpipes, man. I doubt you'll get hounded for that as others have said...Now I don't have aftermarket exhaust but I do have tint (for which I get pulled over almost monthly) and never once has anyone said anything about increased noise.

mithiral67 · 08-28-2012, 12:09 PM

Cut weight out of the car.

cn555ic · 08-28-2012, 12:36 PM

Weld
On some resonators to your exhaust and with catless setup it will be tame

slo_335-e90 · 08-29-2012, 07:51 AM

I'll have to look into the high flow cats. I've heard sometimes they clog easier? and I'd love to go RB turbos, but idk if the awd can handle the increase in power. to be honest, I haven't researched if anyone with awd is running them

benzy89 · 08-29-2012, 08:31 AM

There are a few 335Xis running RB's without trouble, here's the write up from ProTuning Freaks on the one they recently did:

Quote:

Hit the dyno with Andy's 2009 BMW 335xi. Scorcher outside, 95F. On top of that the car is AWD so naturally higher drivetrain losses than RWD (10-12% RWD drivetrain losses vs. 20-22% drivetrain losses in the AWD 335xi). Bone stock, XIs make 247awhp/260awtq on this same type of dyno, in much nicer weather conditions.

Dyno was a Dynojet 424X 4WD dyno, typically a lower reading dyno than your average 2WD Dynojet. Andy's car has full boltons (intake, fmic, catless downpipes and exhaust), RB turbos and runs pump gas only, no methanol injection. The car went on the dyno with OTS Stage2+ Aggressive (Linear Throttle). It made 369awhp/396awtq with power and torque tapering towards redline. After our custom calibration with Cobb's AccessTuner we made what we feel are some impressive gains especially given awful weather conditions and pump gas only.

Result: Gain of +30awhp, +30awtq peak compared to the Off The Shelf (OTS) Stage 2+ Aggressive Cobb tune. What's even more impressive is at 6500rpm the car gained +47awhp over the stage2+ map!

With nicer weather conditions the car will no doubt make another 15-20whp easily on pump gas. With methanol, given the relatively conservative tuning we are running at this point (18psi peak) we have plenty of room to grow. Andy is a road course junkie and in his world controllable power at the tip of his foot means more than peak hp. We've also adjusted his linear throttle map further to his liking for better tip in feel and smoothness.

In case you're wondering, a similarly equipped RWD 335i would baseline considerably higher (270-280whp instead of 247awhp with the XI). If we went wild and swapped Andy's drivetrain to RWD this same car would've put down approximately 440-450whp on PUMP gas in 95F conditions (today), 465-470whp in nicer weather, which is pretty astounding at least to us.

Dyno chart below. Andy, thank you for trusting us with custom tuning on your car, all the best!

Cheers

The dyno sheets on their website: http://www.protuningfreaks.com/

BUT if you are considering RBs, it wouldn't be worth while until you got those catless DPs installed

EJ_3 · 08-29-2012, 09:20 AM

LSD or the suspension of your liking.

BQTuning · 08-29-2012, 11:03 AM

Quote:

Originally Posted by iloseguitarpicks

I'll have to look into the high flow cats. I've heard sometimes they clog easier? and I'd love to go RB turbos, but idk if the awd can handle the increase in power. to be honest, I haven't researched if anyone with awd is running them

There has only been one actual report out of thousands of catted highflow DP sold by CP-e of the catt "unwinding"

I cannot speak for AR Design.

The only reason a catt would uncoil in the DP housing is if the tune rides the knock sensor and lean burns - as was explained to me.

Jeff@TopGearSolutions · 08-29-2012, 11:32 AM

Not sure where you live in NJ but I never had a problem.

You could always get a catted downpipes like CP-E.

08-28-2012, 10:30 AM	#1
slo_335-e90 Lieutenant 33 Rep 571 Posts Drives: 2007 E90 Join Date: Feb 2010 Location: USA iTrader: (11)	Where to go next with increasing performance Hey guys, So at this point I've reached a point where I'm not sure where to turn for the next upgrade to my car. At this point I've done just about everything excluding the downpipes, and while I know those will be a huge benefit with everything else I'm running unfortunately if I threw those on my car I think I'd get endlessly harassed by police in my town (the AA exhaust is great but its a bit louder than I expected). Without changing the turbos, what would any of you guys recommend to look into next? Any help would be great, thanks everyone __________________ -335xi---Innotech Exhaust---AR 3" Catless---Pro tuned---HPF FMIC---ER Chargepipe---KW V1---Injen DCI---BMW Performance Front Bumper, Rear Spoiler & Door Sills---Vorsteiner wheels---much more-
	Appreciate 0 Tweet Quote

08-28-2012, 10:46 AM	#2
ihc95 Major 145 Rep 1,314 Posts Drives: 2021 X3 M40i, 2018 Mustang GT Join Date: Jul 2011 Location: NJ iTrader: (1) Garage List 2007 BMW 335i Coupe [0.00]	Not sure if theres anything that can make your car go any faster, but a STETT cold air intake and oil cooler will make your car run better and who knows maybe free up a few ponies.
	Appreciate 0 Quote

08-28-2012, 10:53 AM	#3
335twins Captain 142 Rep 737 Posts Drives: 2020 x3 M40i, 2019 M2Comp Join Date: Mar 2012 Location: AZ iTrader: (1)	meth?
	Appreciate 0 Quote

08-28-2012, 10:54 AM	#4
CoralRed335XI Captain 98 Rep 646 Posts Drives: 2008 E92 335XI Coupe Join Date: Aug 2011 Location: NJ,VA iTrader: (4) Garage List 2008 BMW 335XI [3.66]	vtec stickers __________________ 2008 E92 335XI, Space Gray on Coral/Fox Red Hybrid M3 seats, Premium, Cold Weather, Comfort Access, iPod. Mods: Fox Red M3 seats up front, KW V1, ER CP + TIAL BOV.
	Appreciate 0 Quote

08-28-2012, 11:02 AM	#8
CoralRed335XI Captain 98 Rep 646 Posts Drives: 2008 E92 335XI Coupe Join Date: Aug 2011 Location: NJ,VA iTrader: (4) Garage List 2008 BMW 335XI [3.66]	Downpipes def are next. A pain to install and pass emissions inspection. Nothing a handshake with a benjamin can't fix . Racegas and racegas maps couldnt hurt either. __________________ 2008 E92 335XI, Space Gray on Coral/Fox Red Hybrid M3 seats, Premium, Cold Weather, Comfort Access, iPod. Mods: Fox Red M3 seats up front, KW V1, ER CP + TIAL BOV.
	Appreciate 0 Quote

08-28-2012, 11:11 AM	#10
5soko Brigadier General 333 Rep 4,632 Posts Drives: M5 Join Date: Aug 2007 Location: Brooklyn, NY iTrader: (4)	DEf DP's.. throw the stock catback exhaust on if you have to.. It lets the turbo breathe out alot more.. Throw some E85 mix in there.. Rb's after that. __________________ Current: E63S AMG 4matic RENNtech \|\| M5 Evolve..Eventuri \|\| F10 LCI 535i MHD
	Appreciate 0 Quote

08-28-2012, 11:18 AM	#12
secretsquirrel Colonel 130 Rep 2,291 Posts Drives: f80 Join Date: Dec 2010 Location: Far North Dallas iTrader: (2)	I don't know about the cops in your area, but I don't know of many people who have issues with cops and volume from aftermarket exhausts on later model BMWs. Traffic stops for volume are largely subjective and cops often ignore "nicer" cars for such things.
	Appreciate 0 Quote

08-28-2012, 11:31 AM	#13
MilehighM3 Brigadier General 915 Rep 3,456 Posts Drives: Harrop E90 M3 Join Date: May 2011 Location: Colorado Springs iTrader: (14) Garage List 2009 E90 M3 [6.50]	What about hugh flow cat dps or resonated dps to help with noise? Definitely the next step...
	Appreciate 0 Quote

08-28-2012, 11:33 AM	#14
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	High Flow catted dps. Keep the intake you have , you wont gain anything by changing it. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
	Appreciate 0 Quote

08-28-2012, 11:34 AM	#15
sickem Freude am fahren 71 Rep 1,968 Posts Drives: E90 N54 Join Date: Mar 2010 Location: Doylestown, PA iTrader: (4) Garage List 2008 BMW 335i E90 [6.50]	put a drum of E85 with a hand pump in your garage. oh, and let me use it. LOL. do the downpipes, man. I doubt you'll get hounded for that as others have said...Now I don't have aftermarket exhaust but I do have tint (for which I get pulled over almost monthly) and never once has anyone said anything about increased noise. __________________ Cobb E40 PROtune by Jake@PTF/RR catless DPs/aFe DCI/ETS 5" FMIC/ER CP/Forge DVs/Alpina B3 TCU flash/BMW Perf. Exhaust./BMW Performance Style 313s/M-Tech Rear
	Appreciate 0 Quote

08-28-2012, 12:09 PM	#16
mithiral67 That guy 117 Rep 5,740 Posts Drives: 2015 Cayman GTS Join Date: Jun 2008 Location: Chicago Burbs iTrader: (4) Garage List 2015 Porsche Cayman ... [0.00]	Cut weight out of the car. __________________ 2015 - Cayman GTS - Stock 2011 - 335is e92 - Cobb PTF E40/Rob - Beck/AR/Helix (458 rwtq and 479 rwhp) - Retired 2007 - 911 Turbo - EP1/AMS (617 awtq and 500 awhp) - Retired 2008 - 335i e92 - Cobb/AR/Helix/OSS (384 rwtq and 356 rwhp) - Retired
	Appreciate 0 Quote

08-28-2012, 12:36 PM	#17
cn555ic 441 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Weld On some resonators to your exhaust and with catless setup it will be tame
	Appreciate 0 Quote

08-29-2012, 07:51 AM	#18
slo_335-e90 Lieutenant 33 Rep 571 Posts Drives: 2007 E90 Join Date: Feb 2010 Location: USA iTrader: (11)	I'll have to look into the high flow cats. I've heard sometimes they clog easier? and I'd love to go RB turbos, but idk if the awd can handle the increase in power. to be honest, I haven't researched if anyone with awd is running them __________________ -335xi---Innotech Exhaust---AR 3" Catless---Pro tuned---HPF FMIC---ER Chargepipe---KW V1---Injen DCI---BMW Performance Front Bumper, Rear Spoiler & Door Sills---Vorsteiner wheels---much more-
	Appreciate 0 Quote

08-29-2012, 09:20 AM	#20
EJ_3 Colonel 371 Rep 2,838 Posts Drives: e92 335i, e34 525i & e60 530i Join Date: Aug 2011 Location: N Las Vegas iTrader: (13) Garage List 2007 BMW 335i [8.34] 2016 Ram 1500 Sport [8.00] 1994 BMW 525i [10.00] 2007 BMW 530i [8.66]	LSD or the suspension of your liking. __________________ click here for mods
	Appreciate 0 Quote

08-29-2012, 11:32 AM	#22
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Not sure where you live in NJ but I never had a problem. You could always get a catted downpipes like CP-E.
	Appreciate 0 Quote